Commitments, Contingencies and Guarantees-JV Lease Amounts (Details 2) $ in Thousands, ¥ in Billions	Jun. 28, 2015 JPY (¥)	Jun. 28, 2015 USD ($)		Dec. 28, 2014 USD ($)
Remaining guarantee obligations
Guarantee of Flash Ventures equipment leases		$ 636,129	[1]	$ 551,000
Flash Ventures [Member]
Remaining guarantee obligations
Year 1		172,090
Year 2		180,788
Year 3		118,458
Year 4		85,034
Year 5		69,774
Year 6		9,985
Guarantee of Flash Ventures equipment leases	¥ 78.8	636,129
Payment of Principal Amortization [Member] | Flash Ventures [Member]
Remaining guarantee obligations
Year 1		162,876
Year 2		134,273
Year 3		88,058
Year 4		63,406
Year 5		30,131
Year 6		2,801
Guarantee of Flash Ventures equipment leases		481,545
Purchase Option Exercise Price at Final Lease Terms [Member] | Flash Ventures [Member]
Remaining guarantee obligations
Year 1		9,214
Year 2		46,515
Year 3		30,400
Year 4		21,628
Year 5		39,643
Year 6		7,184
Guarantee of Flash Ventures equipment leases		$ 154,584

[1] The Company’s guarantee obligation, net of cumulative lease payments, was 78.8 billion Japanese yen, or approximately $636 million based upon the exchange rate at June 28, 2015.