v3.26.1
Debt Obligations - Summary Of Debt Obligations (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Current:    
Partnership accounts receivable securitization facility, due August 2025 [1] $ 451.0 $ 0.0
Finance lease liabilities [2] 107.0 93.1
Current debt obligations 558.0 770.1
Long-term [Abstract]    
Long-term debt including Unamortized premium(discount) and Debt issuance costs 18,461.3 16,522.6
Debt issuance costs, net of amortization [2] (128.4) (120.6)
Finance lease liabilities 687.1 260.4
Long-term debt 19,020.0 16,662.4
Total debt obligations 19,578.0 17,432.5
Targa Resources Partners LP [Member]    
Current:    
Debt issuance costs, net of amortization, current [3]   (2.3)
Senior Unsecured Notes [Member]    
Long-term [Abstract]    
Unamortized discount (38.9) (38.3)
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 4.350% Fixed Rate, due January 2029 [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 4.900% Fixed Rate, due September 2030 [Member]    
Long-term [Abstract]    
Long-term debt 750.0 750.0
Senior Unsecured Notes [Member] | Senior Unsecured 4.350% fixed rate, due April 2031 [Member]    
Long-term [Abstract]    
Long-term debt [4] 750.0  
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 1,000.0
Senior Unsecured Notes [Member] | Senior Unsecured 5.550% Fixed Rate, due August 2035 [Member]    
Long-term [Abstract]    
Long-term debt 1,000.0 1,000.0
Senior Unsecured Notes [Member] | Senior Unsecured Notes Due February 2036 [Member]    
Long-term [Abstract]    
Long-term debt 750.0 750.0
Senior Unsecured Notes [Member] | Senior Unsecured Notes Due July 2036 [Member]    
Long-term [Abstract]    
Long-term debt 1,000.0 1,000.0
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 6.125% Fixed Rate, due May 2055 [Member]    
Long-term [Abstract]    
Long-term debt 1,000.0 1,000.0
Senior Unsecured Notes [Member] | Senior Unsecured 6.050% Fixed Rate, due May 2056 [Member]    
Long-term [Abstract]    
Long-term debt [4] 750.0  
Senior Unsecured Notes [Member] | Senior Unsecured 5.000% Notes due January 2028 [Member] | Targa Resources Partners LP [Member]    
Long-term [Abstract]    
Long-term debt 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 [3],[5]   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 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 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 1,000.0 1,000.0
Revolving Credit Facility [Member] | TRGP Senior Revolving Credit Facility due February 2030 [Member]    
Long-term [Abstract]    
Long-term debt [6] 600.3 161.0
Revolving Credit Facility [Member] | TRGP Senior Revolving Credit Facility due February 2030 [Member] | Targa Resources Partners LP [Member]    
Long-term [Abstract]    
Letters of credit outstanding [6] $ 17.9 $ 20.0
[1] As of June 30, 2026, the Partnership had $451.0 million of qualifying receivables under its $600.0 million accounts receivable securitization facility (the “Securitization Facility”), resulting in $149.0 million remaining availability. In July 2026, the Partnership amended the Securitization Facility to, among other things, extend the facility termination date to July 30, 2027 and increase the total borrowing capacity from up to $600.0 million to up to $800.0 million.
[2] The balance as of June 30, 2026 includes amounts related to the amendment of a compressor lease agreement. See “Note 8 – Leases” for further details.
[3] On January 15, 2026, we used borrowings under the Commercial Paper Program and available cash to fund the redemption of all of the Partnership’s 6.875% Senior Unsecured Notes due 2029.
[4] In March 2026, we completed an underwritten public offering of (i) $750.0 million aggregate principal amount of our 4.350% Senior Unsecured Notes due 2031 and (ii) $750.0 million aggregate principal amount of our 6.050% Senior Unsecured Notes due 2056, resulting in net proceeds of approximately $1,483.2 million. We used a portion of the net proceeds to reduce borrowings under the Commercial Paper Program.
[5] We guarantee all of the Partnership’s outstanding senior unsecured notes.
[6] We maintain an unsecured commercial paper note program (the “Commercial Paper Program”), the borrowings of which are supported through maintaining a minimum available borrowing capacity under the $3.5 billion TRGP senior revolving credit facility (the “TRGP Revolver”), equal to the aggregate amount outstanding under the Commercial Paper Program at any one time not to exceed $3.5 billion. The TRGP Revolver had no borrowings outstanding and the Commercial Paper Program had approximately $0.6 billion of borrowings outstanding, resulting in approximately $2.9 billion of availability under the TRGP Revolver as of June 30, 2026, after accounting for outstanding letters of credit.