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Debt Obligations - Range of Interest Rates and Weighted Average Interest Rate Incurred on Variable Rate Debt Obligations (Details)	Sep. 30, 2024
TRGP Revolver and Commercial Paper Program [Member]
Debt Instrument [Line Items]
Weighted average interest rate incurred	6.00%
Targa Resources Partners LP [Member] | Term Loan Facility [Member]
Debt Instrument [Line Items]
Weighted average interest rate incurred	6.70%
Targa Resources Partners LP [Member] | Securitization Facility [Member]
Debt Instrument [Line Items]
Weighted average interest rate incurred	6.20%
Minimum [Member] | TRGP Revolver and Commercial Paper Program [Member]
Debt Instrument [Line Items]
Range of interest rates incurred	5.40%
Minimum [Member] | Targa Resources Partners LP [Member] | Term Loan Facility [Member]
Debt Instrument [Line Items]
Range of interest rates incurred	6.70%
Minimum [Member] | Targa Resources Partners LP [Member] | Securitization Facility [Member]
Debt Instrument [Line Items]
Range of interest rates incurred	5.70%
Maximum [Member] | TRGP Revolver and Commercial Paper Program [Member]
Debt Instrument [Line Items]
Range of interest rates incurred	6.20%
Maximum [Member] | Targa Resources Partners LP [Member] | Term Loan Facility [Member]
Debt Instrument [Line Items]
Range of interest rates incurred	6.80%
Maximum [Member] | Targa Resources Partners LP [Member] | Securitization Facility [Member]
Debt Instrument [Line Items]
Range of interest rates incurred	6.40%

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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