Commitments, Contingencies and Guarantees-JV (Details Textual 1)	6 Months Ended		3 Months Ended		6 Months Ended				3 Months Ended		6 Months Ended				6 Months Ended								6 Months Ended
	Jun. 30, 2013 USD ($)	Dec. 30, 2012 USD ($)	Jun. 30, 2013 Flash Partners Ltd [Member] USD ($)	Jul. 01, 2012 Flash Partners Ltd [Member] USD ($)	Jun. 30, 2013 Flash Partners Ltd [Member] USD ($)	Jul. 01, 2012 Flash Partners Ltd [Member] USD ($)	Jun. 30, 2013 Flash Partners Ltd [Member] JPY (¥)	Dec. 30, 2012 Flash Partners Ltd [Member] USD ($)	Jun. 30, 2013 Flash Alliance Ltd [Member] USD ($)	Jul. 01, 2012 Flash Alliance Ltd [Member] USD ($)	Jun. 30, 2013 Flash Alliance Ltd [Member] USD ($)	Jul. 01, 2012 Flash Alliance Ltd [Member] USD ($)	Jun. 30, 2013 Flash Alliance Ltd [Member] JPY (¥)	Dec. 30, 2012 Flash Alliance Ltd [Member] USD ($)	Jun. 30, 2013 Flash Forward Ltd [Member] USD ($)	Jun. 30, 2013 Flash Forward Ltd [Member] JPY (¥)	Dec. 30, 2012 Flash Forward Ltd [Member] USD ($)	Jun. 30, 2013 Flash Forward Ltd [Member] SanDisk Corporation [Member]	Jun. 30, 2013 Flash Ventures [Member] USD ($)		Jun. 30, 2013 Flash Ventures [Member] JPY (¥)	Dec. 30, 2012 Flash Ventures [Member] USD ($)	Jun. 30, 2013 Flash Ventures [Member] Standard and Poor [Member]	Jun. 30, 2013 Flash Ventures [Member] Moody's [Member]	Jun. 30, 2013 Flash Ventures [Member] Rating and Investment Information [Member]	Jun. 30, 2013 Flash Ventures [Member] SanDisk Corporation [Member]	Jun. 30, 2013 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			$ 156,500,000		$ 156,500,000				$ 343,200,000		$ 343,200,000				$ 141,300,000				$ (641,000,000)			$ (820,000,000)
Equity investment in business venture			202,800,000		202,800,000			232,500,000	302,300,000		302,300,000			342,000,000	58,700,000		65,700,000		(564,000,000)			(640,000,000)
Cumulative translation adjustments	6,255,000	155,389,000	28,700,000		28,700,000			59,300,000	8,200,000		8,200,000			53,700,000	(12,500,000)		(3,700,000)
Equity Method Investment Difference Between Carrying Amount And Underlying Equity (Basis Adjustment)			300,000	800,000	600,000	2,100,000			2,100,000	3,800,000	5,000,000	7,800,000
Investment in capacity expansion																		50.00%
Master Lease Agreements
Joint Venture Master Equipment Lease Agreement Amount																			2,650,000,000		262,600,000,000
Joint Venture Master Equipment Lease Agreement Outstanding Amount																			1,220,000,000		121,300,000,000
Guarantee of Flash Ventures equipment leases			123,090,000		123,090,000		12,200,000,000		261,133,000		261,133,000		25,900,000,000		228,147,000	22,600,000,000			612,370,000	[1]	60,700,000,000	926,000,000
Master Lease Covenants
Minimum Rating																							BB-	BB-	BB+
External Credit Rating																							BB		BBB
Joint Venture Master Equipment Lease Agreement Guarantor Equity Covenant																			1,510,000,000
Tax Commitment
Unrecognized tax benefits from the contractual obligation	$ 197,200,000

[1] The Company’s guarantee obligation, net of cumulative lease payments, was 60.7 billion Japanese yen, or approximately $612 million based upon the exchange rate at June 30, 2013.