Commitments, Contingencies and Guarantees-JV Lease Amounts (Details 2) (Flash Ventures [Member]) In Thousands, unless otherwise specified	Mar. 31, 2013 USD ($)		Mar. 31, 2013 JPY (¥)	Dec. 30, 2012 USD ($)	Mar. 31, 2013 Payment of Principal Amortization [Member] USD ($)	Mar. 31, 2013 Purchase Option Exercise Price at Final Lease Terms [Member] USD ($)
Remaining guarantee obligations
Year 1	$ 242,300				$ 154,103	$ 88,197
Year 2	204,429				155,389	49,040
Year 3	117,354				105,202	12,152
Year 4	133,573				72,340	61,233
Year 5	45,521				19,261	26,260
Guarantee of Flash Ventures equipment leases	$ 743,177	[1]	¥ 69,900,000	$ 926,000	$ 506,295	$ 236,882

[1] The Company’s guarantee obligation, net of cumulative lease payments, was 69.9 billion Japanese yen, or approximately $743 million based upon the exchange rate at March 31, 2013.