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Pending Acquisition of Elpida Memories, Inc. (Details) Share data in Millions, unless otherwise specified	9 Months Ended					1 Months Ended	3 Months Ended	9 Months Ended	11 Months Ended																18 Months Ended		12 Months Ended		24 Months Ended						1 Months Ended	2 Months Ended						18 Months Ended
	May 30, 2013 USD ($)	May 31, 2012 USD ($)	May 30, 2013 Elpida Company [Member] mm	Jul. 31, 2012 Elpida Company [Member] USD ($)	Jul. 31, 2012 Elpida Company [Member] JPY (¥)	Mar. 26, 2013 Elpida Company [Member] Not Designated as Hedging Instrument [Member] USD ($)	May 30, 2013 Elpida Company [Member] Not Designated as Hedging Instrument [Member] Other Non-Operating Income Expense Net [Member] USD ($)	May 30, 2013 Elpida Company [Member] Not Designated as Hedging Instrument [Member] Other Non-Operating Income Expense Net [Member] USD ($)	May 30, 2013 Elpida Company [Member] Not Designated as Hedging Instrument [Member] Other Non-Operating Income Expense Net [Member] USD ($)	Mar. 26, 2013 Elpida Company [Member] Not Designated as Hedging Instrument [Member] Call Options Purchased [Member] JPY (¥)	Mar. 26, 2013 Elpida Company [Member] Not Designated as Hedging Instrument [Member] Put Options Written [Member] JPY (¥)	Mar. 26, 2013 Elpida Company [Member] Not Designated as Hedging Instrument [Member] Call Options Written [Member] JPY (¥)	May 30, 2013 Elpida Company [Member] Not Designated as Hedging Instrument [Member] Forward contracts [Member] JPY (¥)	May 30, 2013 Elpida Company [Member] Not Designated as Hedging Instrument [Member] Purchased Put Option [Member] JPY (¥)	May 30, 2013 Elpida Company [Member] Payment Guarantee [Member] Capital Expenditure [Member] USD ($)	May 30, 2013 Elpida Company [Member] Payment Guarantee [Member] Capital Expenditure [Member] JPY (¥)	May 30, 2013 Elpida Company [Member] Payment Guarantee [Member] Working Capital Credit Facility [Member] USD ($)	May 30, 2013 Elpida Company [Member] Payment Guarantee [Member] Working Capital Credit Facility [Member] JPY (¥)	May 30, 2013 Elpida Company [Member] Yen	Mar. 26, 2013 Elpida Company [Member] Yen Not Designated as Hedging Instrument [Member] Call Options Purchased [Member]	Mar. 26, 2013 Elpida Company [Member] Yen Not Designated as Hedging Instrument [Member] Put Options Written [Member]	Mar. 26, 2013 Elpida Company [Member] Yen Not Designated as Hedging Instrument [Member] Call Options Written [Member]	May 30, 2013 Elpida Company [Member] Yen Not Designated as Hedging Instrument [Member] Forward contracts [Member]	May 30, 2013 Elpida Company [Member] Yen Not Designated as Hedging Instrument [Member] Purchased Put Option [Member]	Jan. 02, 2014 Elpida Company [Member] Scenario, Forecast [Member] USD ($) decimal	Jan. 02, 2014 Elpida Company [Member] Scenario, Forecast [Member] JPY (¥)	Jun. 30, 2013 Elpida Company [Member] Scenario, Forecast [Member] Capital Expenditure [Member] USD ($)	Jun. 30, 2013 Elpida Company [Member] Scenario, Forecast [Member] Capital Expenditure [Member] JPY (¥)	Jun. 30, 2014 Elpida Company [Member] Scenario, Forecast [Member] Capital Expenditure [Member] USD ($)	Jun. 30, 2014 Elpida Company [Member] Scenario, Forecast [Member] Capital Expenditure [Member] JPY (¥)	Jun. 30, 2013 Elpida Company [Member] Scenario, Forecast [Member] Payment Guarantee [Member] Capital Expenditure [Member] USD ($)	May 30, 2013 Elpida Company [Member] Scenario, Plan [Member] USD ($)	May 30, 2013 Elpida Company [Member] Scenario, Plan [Member] JPY (¥)	May 30, 2013 Rexchip Electronics Corporation [Member] mm	Apr. 02, 2013 Rexchip Electronics Corporation [Member] Not Designated as Hedging Instrument [Member] Call Options Purchased [Member] USD ($)	May 30, 2013 Rexchip Electronics Corporation [Member] Not Designated as Hedging Instrument [Member] Call Options Purchased [Member] USD ($)	May 30, 2013 Rexchip Electronics Corporation [Member] Not Designated as Hedging Instrument [Member] Call Options Purchased [Member] TWD	Apr. 02, 2013 Rexchip Electronics Corporation [Member] Not Designated as Hedging Instrument [Member] Call Options Purchased [Member] TWD	May 30, 2013 Rexchip Electronics Corporation [Member] New Taiwan dollar	May 30, 2013 Rexchip Electronics Corporation [Member] New Taiwan dollar Not Designated as Hedging Instrument [Member] Call Options Purchased [Member]	Apr. 02, 2013 Rexchip Electronics Corporation [Member] New Taiwan dollar Not Designated as Hedging Instrument [Member] Call Options Purchased [Member]	Jan. 02, 2014 Rexchip Electronics Corporation [Member] Scenario, Forecast [Member] USD ($)	Jan. 02, 2014 Rexchip Electronics Corporation [Member] Scenario, Forecast [Member] TWD	May 30, 2013 Elpida Memory, Inc. [Member]	May 30, 2013 Akita Elpida Memory, Inc. [Member]
Business Acquisition [Line Items]
Percentage of equity acquired																																										24.00%	24.00%
Elpida's ownership percentage in Rexchip Electronics Corp																									65.00%	65.00%
Ownership percentage after stock transactions during period (in hundredths)																									100.00%	100.00%																89.00%	89.00%
Diameter of Wafer Used in Production (in millimeters)			300																															300
Elpida Sponsor Agreement [Abstract]
Reorganization Plan Payments, Total Cash Payments																									$ 1,980,000,000	¥ 200,000,000,000
Foreign Currency Exchange Rate, Translation																			101																				30
Business Acquisition Cost Of Acquired Entity Cash Paid At Closing																									593,000,000	60,000,000,000
Funds deposited in escrow account				18,000,000	1,800,000,000
Initial Installment Reorganization Payment																										60,000,000,000
Reorganization Plan Due Date of Inital Installment Payment																									3 months	3 months
Reorganization Plan Future Payments																									1,380,000,000	140,000,000,000
Reorganization Plan Number of Annual Installment Payments																									6	6
Recovery rate of secured creditors																																												100.00%	100.00%
Recovery Rate of Unsecured Creditors																																												17.40%	19.00%
Reorganization payments, by maturity [Abstract]
Reorganization Payment Year Two																																198,000,000	20,000,000,000
Reorganization Payment Year Three																																198,000,000	20,000,000,000
Reorganization Payment Year Four																																198,000,000	20,000,000,000
Reorganization Payment Year Five																																198,000,000	20,000,000,000
Reorganization Payment Year Six																																297,000,000	30,000,000,000
Reorganization Payment Year Seven																																297,000,000	30,000,000,000
Maximum exposure to payment guarantee or direct financing for Elpida																											395,000,000	40,000,000,000	633,000,000	64,000,000,000
Maximum exposure to executed payment guarantees															50,000,000	5,000,000,000	79,000,000	8,000,000,000													16,000,000
Payment Guarantee Collateral in Rexchip Equity Holdings of the Borrower (in hundredths)			93.00%
Rexchip Share Purchase Agreement [Abstract]
Business Combination, Step Acquisition, Shares of Common Stock Purchased																																										714	714
Percentage of equity acquired																																										24.00%	24.00%
Payments to Acquire Additional Interest in Subsidiaries																																										334,000,000	10,000,000,000
Foreign Currency Derivatives [Abstract]
Notional amount of call options purchased										200,000,000,000																											10,000,000,000	10,000,000,000
Weighted average strike price of call options purchased																				79.15				94.24																	29.21
Notional amount of foreign currency derivative sale contracts											100,000,000,000	100,000,000,000
Strike price of options																					83.32	75.57																		28.50
Cash paid on settlement of foreign currency options						191,000,000																													3,000,000	1,000,000
Notional Amount of Foreign Currency Derivatives													80,000,000,000	80,000,000,000
Elpida forward weighted-average price																							91.00
Derivative Instruments, Gain (Loss) Recognized in Income	$ 224,000,000	$ 29,000,000					$ 46,000,000	$ 222,000,000	$ 214,000,000