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Debt Obligations - Summary Of Debt Obligations (Parenthetical) (Details) - USD ($)
 1 Months Ended 12 Months Ended
Apr. 30, 2021
Nov. 30, 2019
Jan. 31, 2019
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Mar. 31, 2021
Feb. 28, 2021
Aug. 31, 2020
Debt Instrument [Line Items]                  
Proceeds from borrowings under accounts receivable securitization facility       $ 630,000,000.0 $ 576,400,000 $ 944,200,000      
Accounts receivable securitization facility, due April 2022 [1],[2]       $ 150,000,000.0 350,000,000.0        
Senior Unsecured 4¼% Notes due November 2023 [Member]                  
Debt Instrument [Line Items]                  
Maturity date May 31, 2021                
Interest rate on fixed rate debt 4.25%                
Accounts Receivable Securitization Facility [Member]                  
Debt Instrument [Line Items]                  
Maturity date Apr. 21, 2022     Apr. 21, 2022          
Proceeds from borrowings under accounts receivable securitization facility         $ 150,000,000.0        
Accounts receivable securitization facility, due April 2022       $ 400,000,000.0          
Remaining borrowing capacity       250,000,000.0          
Maximum borrowing capacity $ 400,000,000.0     $ 400,000,000.0     $ 350,000,000.0    
Revolving Credit Facility [Member] | TRC Senior Secured Revolving Credit Facility due June 2023 [Member]                  
Debt Instrument [Line Items]                  
Maturity date       Jun. 30, 2023 Jun. 30, 2023        
Revolving Credit Facility [Member] | TRC Senior Secured Revolving Credit Facility due February 2020 [Member]                  
Debt Instrument [Line Items]                  
Remaining borrowing capacity       $ 670,000,000.0          
Maximum borrowing capacity       $ 670,000,000.0          
Senior Unsecured Notes [Member]                  
Debt Instrument [Line Items]                  
Interest rate on fixed rate debt               5.125%  
Senior Unsecured Notes [Member] | Senior Unsecured 6½% Senior Notes due July 2027 [Member]                  
Debt Instrument [Line Items]                  
Maturity date     Jul. 31, 2027            
Interest rate on fixed rate debt     6.50%            
Senior Unsecured Notes [Member] | Senior Unsecured of 6⅞% Senior Notes due January 2029 [Member]                  
Debt Instrument [Line Items]                  
Maturity date     Jan. 31, 2029            
Interest rate on fixed rate debt     6.875%            
Senior Unsecured Notes [Member] | Senior Unsecured 4⅞% Notes due February 2031 [Member]                  
Debt Instrument [Line Items]                  
Interest rate on fixed rate debt                 4.875%
Senior Unsecured Notes [Member] | Senior Unsecured of 5½% Senior Notes due March 2030 [Member]                  
Debt Instrument [Line Items]                  
Maturity date   Mar. 31, 2030              
Interest rate on fixed rate debt   5.50%              
Targa Resources Partners LP [Member] | Targa Pipeline Partners L P | Senior Unsecured 5 7/8% Notes due August 2023 [Member]                  
Debt Instrument [Line Items]                  
Interest rate on fixed rate debt               5.875%  
Targa Resources Partners LP [Member] | Accounts Receivable Securitization Facility [Member] | Accounts Receivable Securitization Facility, Due April 2022 [Member]                  
Debt Instrument [Line Items]                  
Maturity date       Apr. 30, 2022 Apr. 30, 2022        
Targa Resources Partners LP [Member] | Revolving Credit Facility [Member] | TRP Senior Secured Revolving Credit Facility due June 2023 [Member]                  
Debt Instrument [Line Items]                  
Maturity date       Jun. 30, 2023 Jun. 30, 2023        
Remaining borrowing capacity       $ 2,128,700,000          
Maximum borrowing capacity       $ 2,200,000,000          
Targa Resources Partners LP [Member] | Senior Unsecured Notes [Member] | Senior Unsecured 4¼% Notes due November 2023 [Member]                  
Debt Instrument [Line Items]                  
Maturity date       Nov. 30, 2023 Nov. 30, 2023        
Interest rate on fixed rate debt       4.25% 4.25%        
Targa Resources Partners LP [Member] | Senior Unsecured Notes [Member] | Senior Unsecured 5⅛% Notes due February 2025 [Member]                  
Debt Instrument [Line Items]                  
Maturity date       Feb. 28, 2025 Feb. 28, 2025        
Interest rate on fixed rate debt       5.125% 5.125%        
Targa Resources Partners LP [Member] | Senior Unsecured Notes [Member] | Senior Unsecured 5⅞% Notes due April 2026 [Member]                  
Debt Instrument [Line Items]                  
Maturity date       Apr. 30, 2026 Apr. 30, 2026        
Interest rate on fixed rate debt       5.875% 5.875%        
Targa Resources Partners LP [Member] | Senior Unsecured Notes [Member] | Senior Unsecured 5⅜% Notes due February 2027 [Member]                  
Debt Instrument [Line Items]                  
Maturity date       Feb. 28, 2027 Feb. 28, 2027        
Interest rate on fixed rate debt       5.375% 5.375%        
Targa Resources Partners LP [Member] | Senior Unsecured Notes [Member] | Senior Unsecured 6½% Senior Notes due July 2027 [Member]                  
Debt Instrument [Line Items]                  
Maturity date       Jul. 31, 2027 Jul. 31, 2027        
Interest rate on fixed rate debt       6.50% 6.50%        
Targa Resources Partners LP [Member] | Senior Unsecured Notes [Member] | Senior Unsecured 5% Notes due January 2028 [Member]                  
Debt Instrument [Line Items]                  
Maturity date       Jan. 31, 2028 Jan. 31, 2028        
Interest rate on fixed rate debt       5.00% 5.00%        
Targa Resources Partners LP [Member] | Senior Unsecured Notes [Member] | Senior Unsecured of 6⅞% Senior Notes due January 2029 [Member]                  
Debt Instrument [Line Items]                  
Maturity date       Jan. 31, 2029 Jan. 31, 2029        
Interest rate on fixed rate debt       6.875% 6.875%        
Targa Resources Partners LP [Member] | Senior Unsecured Notes [Member] | Senior Unsecured 4⅞% Notes due February 2031 [Member]                  
Debt Instrument [Line Items]                  
Maturity date       Feb. 28, 2031 Feb. 28, 2031        
Interest rate on fixed rate debt       4.875% 4.875%        
Targa Resources Partners LP [Member] | Senior Unsecured Notes [Member] | Senior Unsecured of 5½% Senior Notes due March 2030 [Member]                  
Debt Instrument [Line Items]                  
Maturity date       Mar. 31, 2030 Mar. 31, 2030        
Interest rate on fixed rate debt       5.50% 5.50%        
Targa Resources Partners LP [Member] | Senior Unsecured Notes [Member] | Senior Unsecured of 4% Senior Notes due January 2032 [Member]                  
Debt Instrument [Line Items]                  
Maturity date       Jan. 31, 2032 Jan. 31, 2032        
Interest rate on fixed rate debt       4.00% 4.00%        
Targa Resources Partners LP [Member] | Senior Unsecured Notes [Member] | Targa Pipeline Partners L P | Senior Unsecured 4 3/4% Notes due November 2021 [Member]                  
Debt Instrument [Line Items]                  
Maturity date       Nov. 30, 2021 Nov. 30, 2021        
Interest rate on fixed rate debt       4.75% 4.75%        
Targa Resources Partners LP [Member] | Senior Unsecured Notes [Member] | Targa Pipeline Partners L P | Senior Unsecured 5 7/8% Notes due August 2023 [Member]                  
Debt Instrument [Line Items]                  
Maturity date       Aug. 31, 2023 Aug. 31, 2023        
Interest rate on fixed rate debt       5.875% 5.875%        
[1]

As of December 31, 2021, the Partnership had $150.0 million of qualifying receivables under its $400.0 million Securitization Facility, resulting in $250.0 million availability.
[2]

While we consolidate the debt of the Partnership in our financial statements, we do not have the obligation to make interest payments or debt payments with respect to the debt of the Partnership.