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Fair Value Measurements - Schedule of Assets and Liabilities Measured and Recorded at Fair Value (Details) - Fair Value, Measurements, Recurring - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Assets    
Derivatives $ 9 $ 32
Liabilities    
Derivatives 196 200
Mutual funds    
Assets    
Fair value of investments measured on recurring basis 1,072 1,025
U.S. Government securities    
Assets    
Fair value of investments measured on recurring basis 116 119
Other securities    
Assets    
Fair value of investments measured on recurring basis 645 679
Level 1    
Assets    
Derivatives 0 0
Liabilities    
Derivatives 0 0
Level 1 | Mutual funds    
Assets    
Fair value of investments measured on recurring basis 1,072 1,025
Level 1 | U.S. Government securities    
Assets    
Fair value of investments measured on recurring basis 0 0
Level 1 | Other securities    
Assets    
Fair value of investments measured on recurring basis 342 333
Level 2    
Assets    
Derivatives 9 32
Liabilities    
Derivatives 196 200
Level 2 | Mutual funds    
Assets    
Fair value of investments measured on recurring basis 0 0
Level 2 | U.S. Government securities    
Assets    
Fair value of investments measured on recurring basis 116 119
Level 2 | Other securities    
Assets    
Fair value of investments measured on recurring basis 303 301
Level 3    
Assets    
Derivatives 0 0
Liabilities    
Derivatives 0 0
Level 3 | Mutual funds    
Assets    
Fair value of investments measured on recurring basis 0 0
Level 3 | U.S. Government securities    
Assets    
Fair value of investments measured on recurring basis 0 0
Level 3 | Other securities    
Assets    
Fair value of investments measured on recurring basis $ 0 $ 45