XML 65 R53.htm IDEA: XBRL DOCUMENT
v3.20.2

Derivative Instruments and Hedging Activities - Notional Volumes Of The Partnership's Commodity Derivative Contracts (Details) - Targa Resources Partners LP [Member] | 6 Months Ended
--- | ---
Jun. 30, 2020 MMBTU bbl
Swaps [Member] | Year 2020 [Member] | Natural Gas [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in MMBtu per day) | MMBTU | 167,230
Swaps [Member] | Year 2020 [Member] | NGL [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in Bbl per day) | 30,814
Swaps [Member] | Year 2021 [Member] | Natural Gas [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in MMBtu per day) | MMBTU | 166,216
Swaps [Member] | Year 2021 [Member] | NGL [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in Bbl per day) | 23,729
Swaps [Member] | Year 2022 [Member] | Natural Gas [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in MMBtu per day) | MMBTU | 86,100
Swaps [Member] | Year 2022 [Member] | NGL [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in Bbl per day) | 12,371
Swaps [Member] | Year 2023 [Member] | Natural Gas [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in MMBtu per day) | MMBTU | 20,000
Swaps [Member] | Year 2023 [Member] | NGL [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in Bbl per day) | 0
Swaps [Member] | Year 2024 [Member] | Natural Gas [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in MMBtu per day) | MMBTU | 0
Swaps [Member] | Year 2024 [Member] | NGL [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in Bbl per day) | 0
Swaps [Member] | Year 2025 [Member] | Natural Gas [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in MMBtu per day) | MMBTU | 0
Swaps [Member] | Year 2025 [Member] | NGL [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in Bbl per day) | 0
Basis Swaps [Member] | Year 2020 [Member] | Natural Gas [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in MMBtu per day) | MMBTU | 416,374
Basis Swaps [Member] | Year 2021 [Member] | Natural Gas [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in MMBtu per day) | MMBTU | 450,566
Basis Swaps [Member] | Year 2022 [Member] | Natural Gas [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in MMBtu per day) | MMBTU | 295,390
Basis Swaps [Member] | Year 2023 [Member] | Natural Gas [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in MMBtu per day) | MMBTU | 250,000
Basis Swaps [Member] | Year 2024 [Member] | Natural Gas [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in MMBtu per day) | MMBTU | 90,000
Basis Swaps [Member] | Year 2025 [Member] | Natural Gas [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in MMBtu per day) | MMBTU | 5,000
Future [Member] | Year 2020 [Member] | NGL [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in Bbl per day) | 39,370
Future [Member] | Year 2021 [Member] | NGL [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in Bbl per day) | 12,288
Future [Member] | Year 2022 [Member] | NGL [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in Bbl per day) | 0
Future [Member] | Year 2023 [Member] | NGL [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in Bbl per day) | 0
Future [Member] | Year 2024 [Member] | NGL [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in Bbl per day) | 0
Future [Member] | Year 2025 [Member] | NGL [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in Bbl per day) | 0
Options [Member] | Year 2020 [Member] | Condensate [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in Bbl per day) | 5,190
Options [Member] | Year 2021 [Member] | Condensate [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in Bbl per day) | 5,864
Options [Member] | Year 2022 [Member] | Condensate [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in Bbl per day) | 1,610
Options [Member] | Year 2023 [Member] | Condensate [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in Bbl per day) | 0
Options [Member] | Year 2024 [Member] | Condensate [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in Bbl per day) | 0
Options [Member] | Year 2025 [Member] | Condensate [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in Bbl per day) | 0

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DerivativeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Nominal energy measure used to calculate payments on a derivative instrument. + References No definition available. + Details
Name: | us-gaap_DerivativeNonmonetaryNotionalAmountEnergyMeasure
Namespace Prefix: | us-gaap_
Data Type: | num:energyItemType
Balance Type: | na
Period Type: | duration

X
- Definition Nominal volume used to calculate payments on a derivative instrument. + References No definition available. + Details
Name: | us-gaap_DerivativeNonmonetaryNotionalAmountVolume
Namespace Prefix: | us-gaap_
Data Type: | num:volumeItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=trgp_TargaResourcesPartnersLpMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_SwapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=trgp_YearTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ReserveQuantitiesByTypeOfReserveAxis=srt_NaturalGasReservesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ReserveQuantitiesByTypeOfReserveAxis=srt_NaturalGasLiquidsReservesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=trgp_YearThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=trgp_YearFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=trgp_YearFiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=trgp_YearSixMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=trgp_YearSevenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_BasisSwapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_FutureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_OptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_EnergyAxis=trgp_CondensateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |