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Revenues - Timing of Revenue Recognition, Contract Liabilities and Contract Acquisition Costs (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Dec. 31, 2021
Jan. 01, 2021
Dec. 31, 2021
Jan. 01, 2021
Revenue from Contract with Customer [Abstract]        
Revenue recognized from beginning contract liabilities $ 505 $ 450 $ 1,093 $ 971