v3.25.0.1
Debt Obligations - Summary Of Debt Obligations (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Current:    
Partnership accounts receivable securitization facility, due August 2025 [1] $ 330.0 $ 575.0
Finance lease liabilities 57.7 45.7
Current debt obligations 387.7 620.7
Long-term [Abstract]    
Long-term debt including Unamortized premium(discount) and Debt issuance costs 13,635.5 12,179.9
Debt issuance costs, net of amortization (89.0) (90.8)
Finance lease liabilities 240.4 244.1
Long-term debt 13,786.9 12,333.2
Total debt obligations 14,174.6 12,953.9
Senior Unsecured Notes [Member]    
Long-term [Abstract]    
Unamortized discount (29.4) (29.5)
Senior Unsecured Notes [Member] | Senior Unsecured 5.200% Fixed Rate, due July 2027 [Member]    
Long-term [Abstract]    
Long-term debt 750.0 750.0
Senior Unsecured Notes [Member] | Senior Unsecured 6.150% Fixed Rate, due March 2029 [Member]    
Long-term [Abstract]    
Long-term debt 1,000.0 1,000.0
Senior Unsecured Notes [Member] | Senior Unsecured 4.200% Notes due February 2033 [Member]    
Long-term [Abstract]    
Long-term debt 750.0 750.0
Senior Unsecured Notes [Member] | Senior Unsecured 6.125% Fixed Rate, due March 2033 [Member]    
Long-term [Abstract]    
Long-term debt 900.0 900.0
Senior Unsecured Notes [Member] | Senior Unsecured 6.500% Fixed Rate, due March 2034 [Member]    
Long-term [Abstract]    
Long-term debt 1,000.0 1,000.0
Senior Unsecured Notes [Member] | Senior Unsecured 5.500% Fixed Rate, due February 2035 [Member]    
Long-term [Abstract]    
Long-term debt 1,000.0 0.0
Senior Unsecured Notes [Member] | Senior Unsecured 4.950% Notes due April 2052 [Member]    
Long-term [Abstract]    
Long-term debt 750.0 750.0
Senior Unsecured Notes [Member] | Senior Unsecured 6.250% fixed rate, due July 2052 [Member]    
Long-term [Abstract]    
Long-term debt 500.0 500.0
Senior Unsecured Notes [Member] | Senior Unsecured 6.500% Fixed Rate, due February 2053 [Member]    
Long-term [Abstract]    
Long-term debt 850.0 850.0
Senior Unsecured Notes [Member] | Senior Unsecured 6.500% Fixed Rate, due July 2027 [Member] | Targa Resources Partners LP [Member]    
Long-term [Abstract]    
Long-term debt [2] 705.2 705.2
Senior Unsecured Notes [Member] | Senior Unsecured 5.000% Notes due January 2028 [Member] | Targa Resources Partners LP [Member]    
Long-term [Abstract]    
Long-term debt [2] 700.3 700.3
Senior Unsecured Notes [Member] | Senior Unsecured of 6.875% Senior Notes due January 2029 [Member] | Targa Resources Partners LP [Member]    
Long-term [Abstract]    
Long-term debt [2] 679.3 679.3
Senior Unsecured Notes [Member] | Senior Unsecured of 5.500% Senior Notes due March 2030 [Member] | Targa Resources Partners LP [Member]    
Long-term [Abstract]    
Long-term debt [2] 949.6 949.6
Senior Unsecured Notes [Member] | Senior Unsecured of 4.875% Senior Notes due February 2031 [Member] | Targa Resources Partners LP [Member]    
Long-term [Abstract]    
Long-term debt [2] 1,000.0 1,000.0
Senior Unsecured Notes [Member] | Senior Unsecured of 4.000% Senior Notes due January 2032 [Member] | Targa Resources Partners LP [Member]    
Long-term [Abstract]    
Long-term debt [2] 1,000.0 1,000.0
Revolving Credit Facility [Member] | TRGP Senior Revolving Credit Facility due February 2027 [Member]    
Long-term [Abstract]    
Long-term debt [3] 1,130.5 175.0
Revolving Credit Facility [Member] | TRGP Senior Revolving Credit Facility due February 2027 [Member] | Targa Resources Partners LP [Member]    
Long-term [Abstract]    
Letters of credit outstanding 17.6 22.3
Term Loan Facility, Variable Rate, due July 2025    
Long-term [Abstract]    
Long-term debt [4] $ 0.0 $ 500.0
[1] As of December 31, 2024, the Partnership had $330.0 million of qualifying receivables under its $600.0 million accounts receivable securitization facility (the “Securitization Facility”), resulting in $270.0 million of availability.
[2] We guarantee all of the Partnership’s outstanding senior unsecured notes.
[3] We maintain the Commercial Paper Program, the borrowings of which are supported through maintaining a minimum available borrowing capacity under the New TRGP Revolver equal to the aggregate amount outstanding under the Commercial Paper Program. As of December 31, 2024, the Existing TRGP Revolver had no borrowings outstanding and the Commercial Paper Program had $1,130.5 million in borrowings outstanding, resulting in approximately $1,601.9 million of available liquidity, after accounting for outstanding letters of credit.
[4] On May 21, 2024, we repaid the remaining balance and subsequently terminated the Term Loan Facility. As a result of the repayment, we recorded a loss due to debt extinguishment of $0.8 million.