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Commitments and Contingencies Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 30, 2016	Jan. 01, 2016	Dec. 30, 2016	Jan. 01, 2016	Jul. 01, 2016
Guarantor Obligations [Line Items]
Payments for (Proceeds from) Equity Method Investments	$ (766)		$ (1,500)
Income tax expense (benefit)	86	$ (7)	181	$ 24
Related Party Transactions [Abstract]
Investments in Flash Ventures			(20)	$ 0
Accounts Payable, Related Parties, Current	$ 175		$ 175		$ 168
Western Digital Corp [Member] \| Minimum [Member]
Related Party Transactions [Abstract]
Investment Funding Commitments	49.90%		49.90%
Western Digital Corp [Member] \| Maximum [Member]
Related Party Transactions [Abstract]
Investment Funding Commitments	50.00%		50.00%
Toshiba Corp [Member]
Joint Ventures [Abstract]
Partner's ownership in venture business	50.10%		50.10%
Equity Method Investee [Member]
Joint Ventures [Abstract]
Equity Method Investment, Ownership Percentage	49.90%		49.90%
Related Party Transactions [Abstract]
Accounts Payable, Related Parties, Current	$ 175		$ 175		$ 168