v3.26.1
Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Balances, beginning of period $ 1,294 $ 931
Total other comprehensive (loss) income, net of tax (7) 17
Balances, end of period 1,336 984
​Foreign Currency Translation    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Balances, beginning of period (42) (88)
Amounts before reclassifications (12) 17
Amounts reclassified out 0  
Total other comprehensive (loss) income, before tax (12)  
Tax effect 0  
Total other comprehensive (loss) income, net of tax (12) 17
Balances, end of period (54) (71)
Pension and Postretirement Plans    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Balances, beginning of period (53) (79)
Amounts before reclassifications 5 0
Amounts reclassified out 1  
Total other comprehensive (loss) income, before tax 6  
Tax effect (1)  
Total other comprehensive (loss) income, net of tax 5 0
Balances, end of period (48) (79)
Accumulated Other Comprehensive Loss    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Balances, beginning of period (95) (167)
Amounts before reclassifications (7) 17
Amounts reclassified out 1  
Total other comprehensive (loss) income, before tax (6)  
Tax effect (1)  
Total other comprehensive (loss) income, net of tax (7) 17
Balances, end of period $ (102) $ (150)