Restructuring and Other Charges - Schedule of Restructuring Liability (Details) - USD ($) $ in Millions		3 Months Ended						12 Months Ended
	Mar. 31, 2019	Dec. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Dec. 29, 2018	Sep. 29, 2018	Jun. 30, 2018	Mar. 28, 2020	Mar. 30, 2019	Mar. 31, 2018
Restructuring Reserve [Roll Forward]
Restructuring liability, beginning balance	$ 64		$ 64					$ 64
Additions charged to expense		$ 5	1	$ 31	$ 8	$ 2	$ 7
Restructuring liability, ending balance				64				9	$ 64
Lease-related and other costs
Restructuring Reserve [Roll Forward]
Additions charged to expense								3
Retail Fleet Optimization Plan
Restructuring Reserve [Roll Forward]
Restructuring liability, beginning balance	55		55					55
ASC 864 (Leases) Adjustment	(46)
Additions charged to expense								5	41	$ 53
Payments								(9)
Restructuring liability, ending balance	9			55				5	55
Retail Fleet Optimization Plan | Severance and benefit costs
Restructuring Reserve [Roll Forward]
Restructuring liability, beginning balance	2		2					2
ASC 864 (Leases) Adjustment	0
Additions charged to expense								0	3	1
Payments								(1)
Restructuring liability, ending balance	2			2				1	2
Retail Fleet Optimization Plan | Lease-related and other costs
Restructuring Reserve [Roll Forward]
Restructuring liability, beginning balance	53		$ 53					53
ASC 864 (Leases) Adjustment	(46)
Additions charged to expense								5	38	$ 52
Payments								(8)
Restructuring liability, ending balance	$ 7			$ 53				$ 4	$ 53