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Equity Narrative (Details) - USD ($)
$ in Millions
 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Jun. 03, 2025
Dec. 31, 2024
Stock Repurchase Program, Remaining Authorized Repurchase Amount $ 880      
Stock Issued During Period, Value, Dividend Reinvestment Plan $ 33 $ 66    
Stock Issued During Period, Shares, Dividend Reinvestment Plan 1,800,000      
Common Units Remaining Available to be Issued Under Distribution Reinvestment Plan 37,100,000      
USAC [Member]        
Preferred Stock, Shares Outstanding     100,000  
Series F Preferred Units [Member]        
Preferred Stock, Shares Outstanding       500,000
Series G Preferred Units [Member]        
Preferred Stock, Shares Outstanding 1,484,780     1,484,780
Series B Preferred Units [Member]        
Preferred Stock, Shares Outstanding 550,000     550,000
Series H Preferred Units        
Preferred Stock, Shares Outstanding 900,000     900,000
Series I Preferred Units        
Preferred Stock, Shares Outstanding 41,464,179     41,464,179