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Fair Value Measurements - Changes in Fair Value of Level 3 Assets (Details) - Level 3 - Pension Benefit Plans
$ in Millions
12 Months Ended
Dec. 31, 2021
USD ($)
UNITED STATES  
Defined Benefit Plan Disclosure [Line Items]  
Beginning balance $ 0
Transfers from Level 2 17
Actual return on plan assets 5
Purchases 38
Ending balance 60
Non U.S.  
Defined Benefit Plan Disclosure [Line Items]  
Beginning balance 0
Transfers from Level 2 1
Purchases 2
Ending balance $ 3