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CONSOLIDATED STATEMENTS OF CHANGES IN PARTNERS' CAPITAL - USD ($)
$ in Millions
Total
Accumulated Other Comprehensive (Loss) Income
Partners' Capital
Beginning Balance at Dec. 31, 2022 $ 5,702.2 $ (79.5) $ 5,781.7
Add (deduct):      
Net income 386.0   386.0
Distributions paid (300.0)   (300.0)
Other comprehensive income (loss), net of tax 2.9 2.9  
Ending Balance at Dec. 31, 2023 5,791.1 (76.6) 5,867.7
Add (deduct):      
Net income 510.9   510.9
Distributions paid (400.0)   (400.0)
Other comprehensive income (loss), net of tax 4.0 4.0  
Ending Balance at Dec. 31, 2024 5,906.0 (72.6) 5,978.6
Add (deduct):      
Net income 594.7   594.7
Distributions paid (500.0)   (500.0)
Other comprehensive income (loss), net of tax (8.1) (8.1)  
Ending Balance at Dec. 31, 2025 $ 5,992.6 $ (80.7) $ 6,073.3