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Equity (Unit Repurchases) (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Equity [Abstract]        
Number of common units repurchased 2,000,000 2,000,000 5,858,943 5,000,000
Cash paid for common units repurchased(1) [1] $ 100 $ 76 $ 300 $ 226
Average cost per unit(1) [1] $ 50.86 $ 42.89 $ 51.20 $ 41.32
[1] Cash paid for common units repurchased and average cost per unit includes commissions paid to brokers during the period.