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Equity - Change In Common Units (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Jun. 30, 2025
Mar. 31, 2025
Sep. 30, 2024
Jun. 30, 2024
Mar. 31, 2024
Sep. 30, 2025
Dec. 31, 2024
Dec. 31, 2023
Class of Stock [Line Items]                  
Limited Partners' Capital Account, Units Outstanding 3,433,400,000           3,433,400,000 3,431,000,000  
Stock Issued During Period, Shares, Dividend Reinvestment Plan             1,800,000    
Partners' Capital Account, Unit-based Payment Arrangement, Number of Units             600,000    
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest $ 45,344 $ 45,534 $ 46,162 $ 46,180 $ 45,472 $ 43,793 $ 45,344 $ 46,017 $ 43,939
Distributions to partners (1,150) (1,221) (1,133) (1,100) (1,205) (1,128)      
Partners' Capital Account, Redemptions   (500)     (1,750) (895)      
Series H Preferred Units                  
Class of Stock [Line Items]                  
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 908 893 908 908 893 908 $ 908 $ 893 893
Distributions to partners 0 (29) 0 0 (29) 0      
Partners' Capital Account, Redemptions   0     0 0      
Stockholders' Equity, Other   0     0 0      
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest $ 15 14 15 15 14 15      
Preferred Stock, Shares Outstanding 900,000           900,000 900,000  
Series A Preferred Units [Member]                  
Class of Stock [Line Items]                  
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest       0 0 947     948
Distributions to partners       0 (32) (24)      
Partners' Capital Account, Redemptions         (950) 0      
Stockholders' Equity, Other         13 0      
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest       0 22 23      
Series C Preferred Units [Member]                  
Class of Stock [Line Items]                  
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest       0 0 0     438
Distributions to partners       0 0 (11)      
Partners' Capital Account, Redemptions         0 (450)      
Stockholders' Equity, Other         0 11      
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest       0 0 12      
Series B Preferred Units [Member]                  
Class of Stock [Line Items]                  
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest $ 547 556 547 547 556 547 $ 547 $ 556 556
Distributions to partners (18) 0 (18) (18) 0 (18)      
Partners' Capital Account, Redemptions   0     0 0      
Stockholders' Equity, Other   0     0 0      
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest $ 9 9 9 9 9 9      
Preferred Stock, Shares Outstanding 550,000           550,000 550,000  
Series D Preferred Units [Member]                  
Class of Stock [Line Items]                  
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest       0 0 0     435
Distributions to partners       0 0 (11)      
Partners' Capital Account, Redemptions         0 (445)      
Stockholders' Equity, Other         0 10      
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest       0 0 11      
Series E Preferred Units [Member]                  
Class of Stock [Line Items]                  
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest       0 0 786     786
Distributions to partners       0 (15) (15)      
Partners' Capital Account, Redemptions         (800) 0      
Stockholders' Equity, Other         20 0      
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest       0 9 15      
Series F Preferred Units [Member]                  
Class of Stock [Line Items]                  
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest $ 0 0 504 504 496 504 $ 0 $ 496 496
Distributions to partners 0 (16) 0 0 (17) 0      
Partners' Capital Account, Redemptions   (500)     0 0      
Stockholders' Equity, Other   8     0 0      
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest 0 4 8 8 9 8      
Preferred Stock, Shares Outstanding               500,000  
Series G Preferred Units [Member]                  
Class of Stock [Line Items]                  
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 1,515 1,488 1,514 1,514 1,488 1,515 $ 1,515 $ 1,488 1,488
Distributions to partners 0 (53) 0 0 (53) 0      
Partners' Capital Account, Redemptions   0     0 0      
Stockholders' Equity, Other   0     0 0      
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest $ 27 27 26 26 26 27      
Preferred Stock, Shares Outstanding 1,484,780           1,484,780 1,484,780  
Series I Preferred Units                  
Class of Stock [Line Items]                  
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest $ 418 419 419 419 419 419 $ 418 $ 419 419
Distributions to partners (9) (9) (9) (9) (9) (9)      
Partners' Capital Account, Redemptions   0     0 0      
Stockholders' Equity, Other           0      
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest $ 8 9 9 9 9 9      
Preferred Stock, Shares Outstanding 41,464,179           41,464,179 41,464,179  
Preferred Unitholders                  
Class of Stock [Line Items]                  
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest $ 3,388 3,356 3,892 3,892 3,852 5,626 $ 3,388 $ 3,852 $ 6,459
Distributions to partners (27) (107) (27) (27) (155) (88)      
Partners' Capital Account, Redemptions   (500)     (1,750) (895)      
Stockholders' Equity, Other   8     33 21      
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest $ 59 $ 63 $ 67 $ 67 $ 98 $ 129