Summary of Significant Accounting Policies - Activity and Balances of Sales Reserves (Details) - Allowance for sales returns - USD ($) $ in Millions	12 Months Ended
Mar. 30, 2019	Mar. 31, 2018	Apr. 01, 2017
MK Retail assets
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance Beginning of Year	$ 12	$ 7	$ 5
Amounts Charged to Revenue	226	161	102
Write-offs Against Reserves	(223)	(156)	(100)
Balance at Year End	15	12	7
MK Wholesale
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance Beginning of Year	109	97	111
Amounts Charged to Revenue	262	258	271
Write-offs Against Reserves	(259)	(246)	(285)
Balance at Year End	$ 112	$ 109	$ 97

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

Amount of valuation and qualifying accounts and reserves.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SX 210.12-09)
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

+ Details

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- Definition

Amount of increase in valuation and qualifying accounts and reserves from charge to accounts other than cost and expense.

+ References

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Amount of decrease in valuation and qualifying accounts and reserves.

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