Leases (Lease Cost) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jan. 01, 2021	Jan. 03, 2020	Jan. 01, 2021	Jan. 03, 2020
Leases [Abstract]
Operating lease costs	$ 4	$ 6	$ 13	$ 28
Short-term lease costs	1	2	3	6
Variable lease costs	0	6	5	17
Total lease costs	$ 5	$ 14	$ 21	$ 51