Current Assets and Current Liabilities - Schedule of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Millions	Dec. 28, 2019	Mar. 31, 2019	Mar. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Other taxes payable	$ 95		$ 47
Return liabilities	51		35
Accrued capital expenditures	27		25
Accrued rent	22		34
Accrued advertising and marketing	16		10
Gift cards and retail store credits	13		13
Professional services	11		12
Restructuring liability	11		64
Accrued litigation	10		11
Accrued interest	5		10
Accrued purchases and samples	4		29
Other	88		84
Accrued expenses and other current liabilities	$ 353	$ 302	$ 374