v3.25.3
Accumulated Other Comprehensive Loss - Changes in Accumulated Other Comprehensive Loss by Component (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Accumulated Other Comprehensive Income Loss [Line Items]        
Beginning Balance $ 1,753 $ 1,484 $ 1,651 $ 1,233
Ending Balance 1,841 1,621 1,841 1,621
Pension and OPEB liability adjustments        
Accumulated Other Comprehensive Income Loss [Line Items]        
Beginning Balance (6) (1) (3) (2)
Other comprehensive (loss) income before reclassifications 0 0 0 3
Amounts reclassified from AOCL (2) (3) (6) (5)
Income tax (expense) benefit 0 0 1 0
Net current period other comprehensive (loss) income (2) (3) (5) (2)
Ending Balance (8) (4) (8) (4)
Interest rate swaps        
Accumulated Other Comprehensive Income Loss [Line Items]        
Beginning Balance 3 11 5 11
Other comprehensive (loss) income before reclassifications 0 (4) 1 3
Amounts reclassified from AOCL (2) (3) (6) (10)
Income tax (expense) benefit (1) 1 0 1
Net current period other comprehensive (loss) income (3) (6) (5) (6)
Ending Balance 0 5 0 5
Foreign currency items        
Accumulated Other Comprehensive Income Loss [Line Items]        
Beginning Balance (34) (47) (53) (40)
Other comprehensive (loss) income before reclassifications (1) 8 18 1
Amounts reclassified from AOCL 0 0 0 0
Income tax (expense) benefit 0 0 0 0
Net current period other comprehensive (loss) income (1) 8 18 1
Ending Balance (35) (39) (35) (39)
Accumulated Other Comprehensive Loss, net of tax        
Accumulated Other Comprehensive Income Loss [Line Items]        
Beginning Balance (37) (37) (51) (31)
Other comprehensive (loss) income before reclassifications (1) 4 19 7
Amounts reclassified from AOCL (4) (6) (12) (15)
Income tax (expense) benefit (1) 1 1 1
Net current period other comprehensive (loss) income (6) (1) 8 (7)
Ending Balance $ (43) $ (38) $ (43) $ (38)