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Receivables, Net Receivables, Net (Schedule of Non-trade Receivables, Net) (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Receivables [Abstract]    
Non-income taxes receivable $ 282 $ 267
Reinsurance receivables 14 12
Income taxes receivable 123 100
Other 87 71
Non-trade receivables, net $ 506 $ 450