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Intangible Assets - Summary of Intangible Assets (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]    
Accumulated Amortization $ (407) $ (373)
Customer relationships    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 664 672
Accumulated Amortization (407) (373)
Net Value $ 257 $ 299