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Leases - Comprehensive Income Net Lease Costs (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Sep. 28, 2019
Sep. 28, 2019
Leases [Abstract]    
Operating lease cost $ 115 $ 224
Short-term lease cost 3 13
Variable lease cost 39 79
Sublease income (2) (3)
Total lease cost $ 155 $ 313