Entity Central Index Key Deemed preferred stock dividend. Reconciliation of operating margin to net income (loss) [Abstract] Revenues reduced by product purchases and operating expenses. Document and Entity Information [Abstract] Document And Entity Information [Abstract] Entity Registrant Name Entity Registrant Name Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock Shares Outstanding Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Fair value, before the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Fair value, before the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Fair value, before the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Fair value, before the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Statement Of Financial Position [Abstract] Statement [Table] Statement [Table] Class of Stock Statement Class Of Stock [Axis] Class of Stock Class Of Stock [Domain] Series A Preferred Stock Series A Preferred Stock [Member] Statement [Line Items] Statement [Line Items] ASSETS Assets [Abstract] Current assets: Assets Current [Abstract] Cash and cash equivalents Cash And Cash Equivalents At Carrying Value Trade receivables, net of allowances of $0.1 million as of June 30, 2016 and $0.1 million as of December 31, 2015 Accounts Receivable Net Current Inventories Inventory Net Assets from risk management activities Derivative Asset Before Effects Of Master Netting Arrangements Current Other current assets Other Assets Current Total current assets Assets Current Property, plant and equipment Property Plant And Equipment Gross Accumulated depreciation Accumulated Depreciation Depletion And Amortization Property Plant And Equipment Property, plant and equipment, net Property Plant And Equipment Net Intangible assets, net Finite Lived Intangible Assets Net Goodwill, net Goodwill Long-term assets from risk management activities Derivative Asset Before Effects Of Master Netting Arrangements Noncurrent Investments in unconsolidated affiliates Equity Method Investments Other long-term assets Other Assets Noncurrent Total assets Assets LIABILITIES, SERIES A PREFERRED STOCK AND OWNERS' EQUITY Liabilities And Stockholders Equity [Abstract] Current liabilities: Liabilities Current [Abstract] Accounts payable and accrued liabilities Accounts Payable And Accrued Liabilities Current Liabilities from risk management activities Derivative Liability Before Effects Of Master Netting Arrangements Current Accounts receivable securitization facility Collateralized Financings Total current liabilities Liabilities Current Long-term debt Long Term Debt Noncurrent Long-term liabilities from risk management activities Derivative Liability Before Effects Of Master Netting Arrangements Noncurrent Deferred income taxes, net Deferred Tax Liabilities Noncurrent Other long-term liabilities Other Liabilities Noncurrent Contingencies (see Note 17) Commitments And Contingencies Series A Preferred 9.5% Stock, $1,000 per share liquidation preference, (1,200,000 shares authorized, issued and outstanding 965,100 shares) Temporary Equity Carrying Amount Attributable To Parent Owners' equity: Stockholders Equity Including Portion Attributable To Noncontrolling Interest [Abstract] Targa Resources Corp. stockholders' equity: Stockholders Equity [Abstract] Common stock value Common Stock Value Outstanding Preferred stock ($0.001 par value, after designation of Series A Preferred Stock (above) 98,800,000 shares authorized, no shares issued and outstanding) Preferred Stock Value Additional paid-in capital Additional Paid In Capital Receivables from common stock issuances Stockholders Equity Note Subscriptions Receivable Retained earnings (deficit) Retained Earnings Accumulated Deficit Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income Loss Net Of Tax Treasury stock, at cost (479,244 shares as of June 30, 2016 and 426,307 as of December 31, 2015) Treasury Stock Value Total Targa Resources Corp. stockholders' equity Stockholders Equity Noncontrolling interests in subsidiaries Minority Interest Total owners' equity Stockholders Equity Including Portion Attributable To Noncontrolling Interest Total liabilities, Series A Preferred Stock and owners' equity Liabilities And Stockholders Equity Temporary Equity Liquidation Preference Percentage. Trade receivables, allowances Allowance For Doubtful Accounts Receivable Current Preferred Series A Liquidation Stock Percentage Temporary Equity Liquidation Preference Percentage Preferred Stock, Liquidation Preference Per Share Temporary Equity Liquidation Preference Per Share Preferred Stock, Shares Authorized Temporary Equity Shares Authorized Preferred Stock, Shares Issued Temporary Equity Shares Issued Preferred Stock, Shares Outstanding Temporary Equity Shares Outstanding Common stock, par value (in dollars per share) Common Stock Par Or Stated Value Per Share Common stock, shares authorized (in shares) Common Stock Shares Authorized Common stock, shares issued (in shares) Common Stock Shares Issued Common stock, shares outstanding (in shares) Common Stock Shares Outstanding Preferred stock, par value (in dollar per share) Preferred Stock Par Or Stated Value Per Share Preferred stock, shares authorized (in shares) Preferred Stock Shares Authorized Preferred stock, shares issued (in shares) Preferred Stock Shares Issued Preferred stock, shares outstanding (in shares) Preferred Stock Shares Outstanding Treasury stock, shares (in shares) Treasury Stock Shares Interest and debt income expense. Income Statement [Abstract] Revenues Revenues [Abstract] Sales of commodities Revenue Mineral Sales Fees from midstream services Natural Gas Midstream Revenue Total revenues Gas Gathering Transportation Marketing And Processing Revenue Costs and expenses: Costs And Expenses [Abstract] Product purchases Cost Of Purchased Oil And Gas Operating expenses Operating Costs And Expenses Depreciation and amortization expenses Depreciation Depletion And Amortization General and administrative expenses General And Administrative Expense Goodwill impairment Goodwill Impairment Loss Other operating (income) expense Other Operating Income Expense Net Income from operations Operating Income Loss Other income (expense): Nonoperating Income Expense [Abstract] Interest expense, net Interest Income Expense Net Equity earnings (loss) Income Loss From Equity Method Investments Gain (loss) from financing activities Interest And Debt Income Expense Other Other Nonoperating Income Expense Income (loss) before income taxes Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments Income tax (expense) benefit Income Tax Expense Benefit Net income (loss) Profit Loss Less: Net income attributable to noncontrolling interests Net Income Loss Attributable To Noncontrolling Interest Net income (loss) attributable to Targa Resources Corp. Net Income Loss Dividends on Series A preferred stock Dividends Preferred Stock Cash Deemed dividends on Series A preferred stock Deemed Preferred Stock Dividend Net income (loss) attributable to common shareholders Net Income Loss Available To Common Stockholders Basic Net income (loss) per common share - basic Earnings Per Share Basic Net income (loss) per common share - diluted Earnings Per Share Diluted Weighted average shares outstanding - basic Weighted Average Number Of Shares Outstanding Basic Weighted average shares outstanding - diluted Weighted Average Number Of Diluted Shares Outstanding Commodity hedging contracts: Before tax amount of the income statement impact of the reclassification adjustment of accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges realized in net income, attributable to parent entity. Amount of tax (expense) benefit of the income statement impact of the reclassification adjustment of accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges realized in net income, attributable to parent entity. Amount after tax of the income statement impact of the reclassification adjustment of accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges realized in net income, attributable to parent entity. Amount of tax expense (benefit), after reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss), interest rate attributable to parent entity. Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss), interest rate attributable to parent entity. Amount of tax (expense) benefit income statement impact of the reclassification adjustment of accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges realized in net interest expense, attributable to parent entity. Amount after tax for income statement impact of the reclassification adjustment of accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges realized in net interest expense, attributable to parent entity. Commodity hedging contracts: Amount of tax (expense) benefit of the income statement impact of the reclassification adjustment of accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges realized in net income, attributable to noncontrolling interest. Amount of tax (expense) benefit of the income statement impact of the reclassification adjustment of accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges realized in net income, attributable to noncontrolling interest. Amount after tax of the income statement impact of the reclassification adjustment of accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges realized in net income, attributable to noncontrolling interest. Amount of tax (expense) benefit, after reclassification adjustments, of (increase) decrease in accumulated (gain) loss from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's (increase) decrease in deferred hedging (gain) loss, attributable to noncontrolling interests. Amount after tax and reclassification adjustments, of (increase) decrease in accumulated (gain) loss from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's (increase) decrease in deferred hedging (gain) loss, attributable to noncontrolling interests. Amount of tax (expense) benefit income statement impact of the reclassification adjustment of accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges realized in net interest expense attributable to noncontrolling interest. Amount after tax for income statement impact of the reclassification adjustment of accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges realized in net interest expense attributable to noncontrolling interest. Commodity hedging contracts. Before tax amount of the income statement impact of the reclassification adjustment of accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges realized in net income, including portion attributable to noncontrolling interest. Amount of tax (expense) benefit of the income statement impact of the reclassification adjustment of accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges realized in net income, including portion attributable to noncontrolling interest. Amount after tax of the income statement impact of the reclassification adjustment of accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges realized in net income, including portion attributable to noncontrolling interest. Amount of tax expense (benefit), after reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss), interest rate, including portion attributable to noncontrolling interest. Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss), interest rate, including portion attributable to noncontrolling interest. Amount of tax (expense) benefit income statement impact of the reclassification adjustment of accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges realized in net interest expense, including portion attributable to noncontrolling interest. Amount after tax for income statement impact of the reclassification adjustment of accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges realized in net interest expense, including portion attributable to noncontrolling interest. Comprehensive Income Net Of Tax [Abstract] Net income (loss) attributable to Targa Resources Corp. Other comprehensive income (loss) attributable to Targa Resources Corp. Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent [Abstract] Commodity hedging contracts: Commodity Hedging Contracts Attributable To Parent [Abstract] Change in fair value, pre-tax Other Comprehensive Income Derivatives Qualifying As Hedges Before Tax Portion Attributable To Parent Change in fair value, related income tax Other Comprehensive Income Derivatives Qualifying As Hedges Tax Portion Attributable To Parent Change in fair value, after tax Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Parent Settlements reclassified to revenues, pre-tax Other Comprehensive Income Loss Reclassification Adjustment On Derivatives Included In Net Income Before Tax Portion Attributable To Parent Settlements reclassified to revenues, related income tax Other Comprehensive Income Loss Reclassification Adjustment On Derivatives Included In Net Income Tax Portion Attributable To Parent Settlements reclassified to revenues, after tax Other Comprehensive Income Loss Reclassification Adjustment On Derivatives Included In Net Income Net Of Tax Portion Attributable To Parent Change in fair value, related income tax Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax Interest Rate Swaps Portion Attributable To Parent Change in fair value, after tax Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax Interest Rate Swaps Portion Attributable To Parent Settlements reclassified to interest expense, net, related income tax Other Comprehensive Income Loss Reclassification Adjustment On Derivatives Included In Net Interest Tax Portion Attributable To Parent Settlements reclassified to interest expense, net, after tax Other Comprehensive Income Loss Reclassification Adjustment On Derivatives Included In Net Interest Net Of Tax Portion Attributable To Parent Other comprehensive income (loss) attributable to Targa Resources Corp., pre-tax Other Comprehensive Income Loss Before Tax Portion Attributable To Parent Other comprehensive income (loss) attributable to Targa Resources Corp., related income tax Other Comprehensive Income Loss Tax Portion Attributable To Parent1 Other comprehensive income (loss) attributable to Targa Resources Corp., after tax Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent Comprehensive income attributable to Targa Resources Corp. Comprehensive Income Net Of Tax Net income (loss) attributable to noncontrolling interests Other comprehensive income (loss) attributable to noncontrolling interests Other Comprehensive Income Before Tax Portion Attributable To Noncontrolling Interest [Abstract] Commodity hedging contracts: Commodity Hedging Contracts Attributable To Noncontrolling Interests [Abstract] Change in fair value, pre-tax Other Comprehensive Income Derivatives Qualifying As Hedges Before Tax Portion Attributable To Noncontrolling Interest Change in fair value, related income tax Other Comprehensive Income Derivatives Qualifying As Hedges Tax Portion Attributable To Noncontrolling Interest Change in fair value, after tax Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Noncontrolling Interest Settlements reclassified to revenues, pre-tax Other Comprehensive Income Loss Reclassification Adjustment On Derivatives In Net Income Before Tax Portion Attributable To Noncontrolling Interest Settlements reclassified to revenues, related income tax Other Comprehensive Income Loss Reclassification Adjustment On Derivatives Included In Net Income Tax Portion Attributable To Noncontrolling Interest Settlements reclassified to revenues, after tax Other Comprehensive Income Loss Reclassification Adjustment On Derivatives Included In Net Income Net Of Tax Portion Attributable To Noncontrolling Interest Change in fair value, related income tax Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax Interest Rate Swaps Portion Attributable To Noncontrolling Interest Change in fair value, after tax Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax Interest Rate Swaps Portion Attributable To Noncontrolling Interest Settlements reclassified to interest expense, net, related income tax Other Comprehensive Income Loss Reclassification Adjustment On Derivatives Included In Net Interest Tax Portion Attributable To Noncontrolling Interest Settlements reclassified to interest expense, net, after tax Other Comprehensive Income Loss Reclassification Adjustment On Derivatives Included In Net Interest Net Of Tax Portion Attributable To Noncontrolling Interest Other comprehensive income (loss) attributable to noncontrolling interests, pre-tax Other Comprehensive Income Loss Before Tax Portion Attributable To Noncontrolling Interest Other comprehensive income (loss) attributable to noncontrolling interests, related income tax Other Comprehensive Income Loss Tax Portion Attributable To Noncontrolling Interest Other comprehensive income (loss) attributable to noncontrolling interests, after tax Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest Comprehensive income (loss) attributable to noncontrolling interests Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest Total Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest [Abstract] Net income (loss) Other comprehensive income (loss) Other Comprehensive Income Loss Net Of Tax Period Increase Decrease [Abstract] Commodity hedging contracts: Commodity Hedging Contracts Including Portion Attributable To Noncontrolling Interests [Abstract] Change in fair value, pre-tax Other Comprehensive Income Loss Derivatives Qualifying As Hedges Before Tax Change in fair value, related income tax Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax Change in fair value, after tax Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax Settlements reclassified to revenues, pre-tax Other Comprehensive Income Loss Reclassification Adjustment On Derivatives Included In Net Income Before Tax Including Portion Attributable To Noncontrolling Interest Settlements reclassified to revenues, related income tax Other Comprehensive Income Loss Reclassification Adjustment On Derivatives Included In Net Income Tax Including Portion Attributable To Noncontrolling Interest Settlements reclassified to revenues, after tax Other Comprehensive Income Loss Reclassification Adjustment On Derivatives Included In Net Income Net Of Tax Including Portion Attributable To Noncontrolling Interest Change in fair value, related income tax Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax Interest Rate Swaps Including Portion Attributable To Noncontrolling Interest Change in fair value, after tax Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax Interest Rate Swaps Including Portion Attributable To Noncontrolling Interest Settlements reclassified to interest expense, net, related income tax Other Comprehensive Income Loss Reclassification Adjustment On Derivatives Included In Net Interest Tax Including Portion Attributable To Noncontrolling Interest Settlements reclassified to interest expense, net, after tax Other Comprehensive Income Loss Reclassification Adjustment On Derivatives Included In Net Interest Net Of Tax Including Portion Attributable To Noncontrolling Interest Other comprehensive income (loss) attributable to Targa Resources Corp., pre-tax Other Comprehensive Income Loss Before Tax Other comprehensive income (loss) attributable to Targa Resources Corp., related income tax Other Comprehensive Income Loss Tax Other comprehensive income (loss) attributable to Targa Resources Corp., after tax Other Comprehensive Income Loss Net Of Tax Total comprehensive income (loss) Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest Number of shares granted, before forfeitures, of stock or other type of equity granted of any equity-based compensation plan other than an employee stock ownership plan (ESOP). The equity impact of the distribution equivalent rights during the period. Adjustment to additional paid in capital from common stock offering. Adjustments to additional paid in capital preferred stock dividends in excess of retained earnings. Contributions from non controlling interest received during the period. Increase in noncontrolling interest balance because of issuance of Partnership units during the period. Statement Of Stockholders Equity [Abstract] Equity Components Statement Equity Components [Axis] Equity Component Equity Component [Domain] Common Stock [Member] Common Stock [Member] Additional Paid-in Capital [Member] Additional Paid In Capital [Member] Retained Earnings (Accumulated Deficit) [Member] Retained Earnings [Member] Accumulated Other Comprehensive Income (Loss) [Member] Accumulated Other Comprehensive Income [Member] Treasury Shares [Member] Treasury Stock [Member] Noncontrolling Interests [Member] Noncontrolling Interest [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase Decrease In Stockholders Equity Roll Forward Balance Balance (in shares) Shares Outstanding Series A Preferred Stock Compensation on equity grants Stock Granted During Period Value Sharebased Compensation Gross Compensation on equity grants (in shares) Stock Granted Shares Share Based Compensation Gross Distribution equivalent rights Distribution Equivalent Rights Shares issued under compensation program (in shares) Stock Issued During Period Shares Share Based Compensation Gross Shares and units tendered for tax withholding obligations Adjustments Related To Tax Withholding For Share Based Compensation Shares and units tendered for tax withholding obligations (in shares) Shares Paid For Tax Withholding For Share Based Compensation Sale of Partnership limited partner interests Noncontrolling Interest Increase From Sale Of Parent Equity Interest Proceeds from common stock issuances Stock Issued During Period Value New Issues Proceeds from common stock issuances (in shares) Stock Issued During Period Shares New Issues Receivables from common stock offerings Adjustment To Additional Paid In Capital From Common Stock Offering Issuance of Series A preferred and detachable warrants Stock And Warrants Issued During Period Value Preferred Stock And Warrants Series A preferred stock dividends Dividends Preferred Stock Stock Series A preferred stock dividends in excess of retained earnings Adjustments To Additional Paid In Capital Preferred Stock Dividends In Excess Of Retained Earnings Series A Preferred Stock Temporary Equity Stock Issued During Period Value New Issues Series A preferred stock deemed dividends Common stock dividends Dividends Common Stock Common stock dividends in excess of retained earnings Adjustments To Additional Paid In Capital Dividends In Excess Of Retained Earnings Distributions to noncontrolling interests Minority Interest Decrease From Distributions To Noncontrolling Interest Holders Contributions from noncontrolling interests Contributions From Non Controlling Interest Noncontrolling interests in acquired subsidiaries Noncontrolling Interest Increase From Business Combination Acquisition of TRP noncontrolling common interests (in shares) Business Acquisition Equity Interests Issued Or Issuable Number Of Shares Issued Common stock issued in ATLS merger (in shares) Stock Issued During Period Shares Acquisitions Common stock issued in ATLS merger Stock Issued During Period Value Acquisitions Partnership units issued in APL merger Noncontrolling Interest Increase From Issuance Of Partnership Units Other comprehensive income (loss) Balance Balance (in shares) Series A Preferred Stock Impact of Partnership equity transactions Noncontrolling Interest Increase From Subsidiary Equity Issuance Dividends Dividends Partnership debt obligations. Open market purchases of senior notes. Cash outflow to owners or shareholders, right holders, excluding ordinary dividends.