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Employee Benefit Plans - Summary of Change in Assets Measured at Level 3 (Details) - Level 3 - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
The effect of fair-value measurements using significant unobservable inputs on changes in Level 3 plan assets for the period are outlined below    
Beginning balance $ 138 $ 177
Actual Return on Plan Assets:    
Assets held at the reporting date 10 6
Assets sold during the period 11 (2)
Purchases, Sales and Settlements (7) 0
Transfers in and/or out of Level 3 0 (43)
Ending balance 152 138
U.S.    
The effect of fair-value measurements using significant unobservable inputs on changes in Level 3 plan assets for the period are outlined below    
Beginning balance 1 0
Actual Return on Plan Assets:    
Assets held at the reporting date (1) 1
Assets sold during the period 0 0
Purchases, Sales and Settlements 0 0
Transfers in and/or out of Level 3 0 0
Ending balance 0 1
International    
The effect of fair-value measurements using significant unobservable inputs on changes in Level 3 plan assets for the period are outlined below    
Beginning balance 0 0
Actual Return on Plan Assets:    
Assets held at the reporting date 11 0
Assets sold during the period 2 0
Purchases, Sales and Settlements 2 0
Transfers in and/or out of Level 3 6 0
Ending balance 21 0
Real Estate    
The effect of fair-value measurements using significant unobservable inputs on changes in Level 3 plan assets for the period are outlined below    
Beginning balance 0 38
Actual Return on Plan Assets:    
Assets held at the reporting date 0 5
Assets sold during the period 0 0
Purchases, Sales and Settlements 0 0
Transfers in and/or out of Level 3 0 (43)
Ending balance 0 0
Other    
The effect of fair-value measurements using significant unobservable inputs on changes in Level 3 plan assets for the period are outlined below    
Beginning balance 137 139
Actual Return on Plan Assets:    
Assets held at the reporting date 0 0
Assets sold during the period 9 (2)
Purchases, Sales and Settlements (9) 0
Transfers in and/or out of Level 3 (6) 0
Ending balance $ 131 $ 137