Investments in Unconsolidated Affiliates - Activity Related to Partnership's Investments in Unconsolidated Affiliates (Parenthetical) (Details)	Jan. 31, 2022	Dec. 31, 2021	Dec. 31, 2018
GCX DevCo JV [Member]
Schedule Of Equity Method Investments [Line Items]
Ownership interest		20.00%
GCX DevCo JV [Member] | DevCo JV Repurchase [Member] | Subsequent Event [Member]
Schedule Of Equity Method Investments [Line Items]
Ownership interest	25.00%
GCX [Member] | GCX DevCo JV [Member]
Schedule Of Equity Method Investments [Line Items]
Ownership interest		25.00%
Targa Resources Partners LP [Member] | T2 EF Cogen [Member]
Schedule Of Equity Method Investments [Line Items]
Ownership interest			50.00%