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Fair Value Measurements - Fair Value Hierarchy (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Asset Category:    
Retirement plan assets $ 434 $ 486
Fair value measurements, recurring | Estimate of fair value measurement    
Asset Category:    
Retirement plan assets 595 629
Interest rate swaps 2 8
Liability Category:    
Cross currency swaps 16 1
Level 1 | Fair value measurements, recurring    
Asset Category:    
Retirement plan assets 130 121
Interest rate swaps 0 0
Liability Category:    
Cross currency swaps 0 0
Level 2 | Fair value measurements, recurring    
Asset Category:    
Retirement plan assets 73 56
Interest rate swaps 2 8
Liability Category:    
Cross currency swaps 16 1
Level 3 | Fair value measurements, recurring    
Asset Category:    
Retirement plan assets 21 18
Interest rate swaps 0 0
Liability Category:    
Cross currency swaps 0 0
NAV | Fair value measurements, recurring    
Asset Category:    
Interest rate swaps 0 0
NAV | Fair value measurements, recurring | Estimate of fair value measurement    
Asset Category:    
Retirement plan assets 371 434
Liability Category:    
Cross currency swaps $ 0 $ 0