Commitments, Contingencies and Guarantees-JV (Details Textual 1)	9 Months Ended			3 Months Ended		9 Months Ended				3 Months Ended		9 Months Ended				9 Months Ended
	Sep. 28, 2014 USD ($)		Dec. 29, 2013 USD ($)	Sep. 28, 2014 Flash Partners Ltd [Member] USD ($)	Sep. 29, 2013 Flash Partners Ltd [Member] USD ($)	Sep. 28, 2014 Flash Partners Ltd [Member] USD ($)	Sep. 29, 2013 Flash Partners Ltd [Member] USD ($)	Sep. 28, 2014 Flash Partners Ltd [Member] JPY (¥)	Dec. 29, 2013 Flash Partners Ltd [Member] USD ($)	Sep. 28, 2014 Flash Alliance Ltd [Member] USD ($)	Sep. 29, 2013 Flash Alliance Ltd [Member] USD ($)	Sep. 28, 2014 Flash Alliance Ltd [Member] USD ($)	Sep. 29, 2013 Flash Alliance Ltd [Member] USD ($)	Sep. 28, 2014 Flash Alliance Ltd [Member] JPY (¥)	Dec. 29, 2013 Flash Alliance Ltd [Member] USD ($)	Sep. 28, 2014 Flash Forward Ltd [Member] USD ($)	Sep. 28, 2014 Flash Forward Ltd [Member] JPY (¥)	Dec. 29, 2013 Flash Forward Ltd [Member] USD ($)	Sep. 28, 2014 Flash Ventures [Member] USD ($)	Sep. 28, 2014 Flash Ventures [Member] JPY (¥)	Sep. 28, 2014 Flash Ventures [Member] SanDisk Corporation [Member]	Sep. 28, 2014 Flash Ventures [Member] Toshiba Corporation [Member]
Venture Ownership
Firm's ownership in business venture																					49.90%
Partner's ownership in venture business																						50.10%
Venture Origination Year						Sep. 10, 2004						Jul. 07, 2006				Jul. 13, 2010	Jul. 13, 2010
Equity Investments
Notes Receivable, Related Parties, Noncurrent				$ 13,700,000		$ 13,700,000				$ 338,700,000		$ 338,700,000				$ 222,000,000
Equity investment in business venture				183,600,000		183,600,000			190,700,000	274,300,000		274,300,000			284,000,000	87,200,000		66,700,000
Cumulative translation adjustments	(86,269,000)		(47,440,000)	9,800,000		9,800,000			17,300,000	(20,000,000)		(20,000,000)			(8,700,000)	(20,300,000)		(16,200,000)
Equity Method Investment Difference Between Carrying Amount And Underlying Equity (Basis Adjustment)				0	100,000	0	700,000			0	1,200,000	0	6,200,000
Master Lease Agreements
Joint Venture Master Equipment Lease Agreement Amount																			1,760,000,000	192,400,000,000
Joint Venture Master Equipment Lease Agreement Outstanding Amount																			1,110,000,000	120,800,000,000
Guarantee of Flash Ventures equipment leases	553,135,000	[1]	492,000,000	93,521,000		93,521,000		10,100,000,000		311,839,000		311,839,000		34,100,000,000		147,775,000	16,200,000,000		553,135,000	60,400,000,000
Master Lease Covenants
Joint Venture Master Equipment Lease Agreement Guarantor Equity Covenant																			1,510,000,000
Tax Commitment
Unrecognized Tax Benefits From Contractual Obligation	$ 119,100,000

[1] The Company’s guarantee obligation, net of cumulative lease payments, was 60.4 billion Japanese yen, or approximately $553 million based upon the exchange rate at September 28, 2014.