Debt Obligations - Schedule of Contractual Maturities of Debt Obligations (Details) $ in Millions	Dec. 31, 2022 USD ($)
Contractual Obligation [Line Items]
Total	$ 11,374.7
2023	800.0
2024	0.0
2025	1,500.0
2026	0.0
2027	2,752.9
Thereafter	6,321.8
Securitization Facility \| Targa Resources Partners LP [Member]
Contractual Obligation [Line Items]
Total	800.0
2023	800.0
2024	0.0
2025	0.0
2026	0.0
2027	0.0
Thereafter	0.0
Senior Unsecured Notes [Member] \| Targa Resources Partners LP [Member]
Contractual Obligation [Line Items]
Total	5,034.4
2023	0.0
2024	0.0
2025	0.0
2026	0.0
2027	705.2
Thereafter	4,329.2
TRGP Revolver and Commercial Paper Program [Member] \| Targa Resources Partners LP [Member]
Contractual Obligation [Line Items]
Total	1,298.7
2023	0.0
2024	0.0
2025	0.0
2026	0.0
2027	1,298.7
Thereafter	0.0
TRGP Senior Unsecured Notes [Member] \| Targa Resources Partners LP [Member]
Contractual Obligation [Line Items]
Total	2,741.6
2023	0.0
2024	0.0
2025	0.0
2026	0.0
2027	749.0
Thereafter	1,992.6
Term Loan Facility [Member] \| Targa Resources Partners LP [Member]
Contractual Obligation [Line Items]
Total	1,500.0
2023	0.0
2024	0.0
2025	1,500.0
2026	0.0
2027	0.0
Thereafter	$ 0.0

Contractual obligation.

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Total amount, before unamortized (discount) premium and debt issuance costs, of long-term debt.

+ References

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