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Revenue Recognition - Contract Balances, Information about Receivables and Deferred Revenue (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Revenue from Contract with Customer [Abstract]    
Trade receivables $ 524 $ 404
Deferred revenue (contract liabilities) $ 144 117
Policy period 1 year  
Revenue recognized $ 106 $ 103