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Derivative Instruments and Hedging Activities - Notional Volumes Of The Partnership's Commodity Derivative Contracts (Details) - Targa Resources Partners LP [Member] | 6 Months Ended
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Jun. 30, 2021 MMBTU bbl
Swaps [Member] | Year 2021 [Member] | Natural Gas [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in MMBtu per day) | MMBTU | 183,743
Swaps [Member] | Year 2021 [Member] | NGL [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in Bbl per day) | 37,448
Swaps [Member] | Year 2022 [Member] | Natural Gas [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in MMBtu per day) | MMBTU | 108,253
Swaps [Member] | Year 2022 [Member] | NGL [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in Bbl per day) | 26,780
Swaps [Member] | Year 2023 [Member] | Natural Gas [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in MMBtu per day) | MMBTU | 54,726
Swaps [Member] | Year 2023 [Member] | NGL [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in Bbl per day) | 10,825
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) | 838
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 2021 [Member] | Natural Gas [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in MMBtu per day) | MMBTU | 558,929
Basis Swaps [Member] | Year 2022 [Member] | Natural Gas [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in MMBtu per day) | MMBTU | 308,356
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 | 200,000
Basis Swaps [Member] | Year 2025 [Member] | Natural Gas [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in MMBtu per day) | MMBTU | 110,041
Future [Member] | Year 2021 [Member] | NGL [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in Bbl per day) | 15,027
Future [Member] | Year 2022 [Member] | NGL [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in Bbl per day) | (11)
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 2021 [Member] | Condensate [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in Bbl per day) | 5,434
Options [Member] | Year 2022 [Member] | Condensate [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in Bbl per day) | 3,853
Options [Member] | Year 2023 [Member] | Condensate [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in Bbl per day) | 2,081
Options [Member] | Year 2024 [Member] | Condensate [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in Bbl per day) | 56
Options [Member] | Year 2025 [Member] | Condensate [Member] |
Derivative [Line Items] |
Notional volumes of commodity hedges (in Bbl per day) | 0

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