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Commitments, Contingencies and Guarantees-JV (Details Textual 1)
 3 Months Ended 3 Months Ended 3 Months Ended
Mar. 29, 2015
USD ($)
Dec. 28, 2014
USD ($)
Mar. 29, 2015
Flash Partners Ltd [Member]
USD ($)
Mar. 29, 2015
Flash Partners Ltd [Member]
JPY (¥)
Dec. 28, 2014
Flash Partners Ltd [Member]
USD ($)
Mar. 29, 2015
Flash Alliance Ltd [Member]
USD ($)
Mar. 29, 2015
Flash Alliance Ltd [Member]
JPY (¥)
Dec. 28, 2014
Flash Alliance Ltd [Member]
USD ($)
Mar. 29, 2015
Flash Forward Ltd [Member]
USD ($)
Mar. 29, 2015
Flash Forward Ltd [Member]
JPY (¥)
Dec. 28, 2014
Flash Forward Ltd [Member]
USD ($)
Mar. 29, 2015
Flash Ventures [Member]
USD ($)
Mar. 29, 2015
Flash Ventures [Member]
JPY (¥)
Mar. 29, 2015
Flash Ventures [Member]
SanDisk Corporation [Member]
Mar. 29, 2015
Flash Ventures [Member]
Toshiba Corporation [Member]
Venture Ownership                              
Firm's ownership in business venture                           49.90%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ sndk_EquityMethodInvestorNameAxis
= sndk_SandiskCorpMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= us-gaap_EquityMethodInvesteeMember		  
Partner's ownership in venture business                             50.10%sndk_PartnersOwnershipInVentureBusiness
/ sndk_EquityMethodInvestorNameAxis
= sndk_ToshibaCorpMember
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= us-gaap_EquityMethodInvesteeMember
Venture Origination Year     Sep. 10, 2004 Sep. 10, 2004   Jul. 07, 2006 Jul. 07, 2006   Jul. 13, 2010 Jul. 13, 2010          
Equity Investments                              
Notes Receivable, Related Parties, Noncurrent     $ 28,600,000us-gaap_NotesReceivableRelatedPartiesNoncurrent
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= sndk_FlashPartnersLtdMember		     $ 297,000,000us-gaap_NotesReceivableRelatedPartiesNoncurrent
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= sndk_FlashAllianceLtdMember		     $ 157,600,000us-gaap_NotesReceivableRelatedPartiesNoncurrent
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= sndk_FlashForwardLtdMember		            
Equity investment in business venture     170,000,000us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= sndk_FlashPartnersLtdMember		   167,100,000us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= sndk_FlashPartnersLtdMember		 254,700,000us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= sndk_FlashAllianceLtdMember		   249,500,000us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= sndk_FlashAllianceLtdMember		 81,800,000us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= sndk_FlashForwardLtdMember		   79,200,000us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= sndk_FlashForwardLtdMember		        
Cumulative translation adjustments (186,777,000)us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax (197,252,000)us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax (5,300,000)us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= sndk_FlashPartnersLtdMember		   (7,300,000)us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= sndk_FlashPartnersLtdMember		 (42,500,000)us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= sndk_FlashAllianceLtdMember		   (45,500,000)us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= sndk_FlashAllianceLtdMember		 (27,400,000)us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= sndk_FlashForwardLtdMember		   (28,400,000)us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= sndk_FlashForwardLtdMember		        
Master Lease Agreements                              
Guarantee of Flash Ventures equipment leases (1) 606,493,000us-gaap_GuaranteeObligationsMaximumExposure [1] 551,000,000us-gaap_GuaranteeObligationsMaximumExposure 77,341,000us-gaap_GuaranteeObligationsMaximumExposure
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= sndk_FlashPartnersLtdMember		 9,200,000,000us-gaap_GuaranteeObligationsMaximumExposure
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= sndk_FlashPartnersLtdMember		   375,566,000us-gaap_GuaranteeObligationsMaximumExposure
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= sndk_FlashAllianceLtdMember		 44,700,000,000us-gaap_GuaranteeObligationsMaximumExposure
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= sndk_FlashAllianceLtdMember		   153,586,000us-gaap_GuaranteeObligationsMaximumExposure
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= sndk_FlashForwardLtdMember		 18,300,000,000us-gaap_GuaranteeObligationsMaximumExposure
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= sndk_FlashForwardLtdMember		   606,493,000us-gaap_GuaranteeObligationsMaximumExposure
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= us-gaap_EquityMethodInvesteeMember		 72,200,000,000us-gaap_GuaranteeObligationsMaximumExposure
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= us-gaap_EquityMethodInvesteeMember		    
Master Lease Covenants                              
Joint Venture Master Equipment Lease Agreement Guarantor Equity Covenant                       1,510,000,000sndk_JointVentureMasterEquipmentLeaseAgreementGuarantorEquityCovenant
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= us-gaap_EquityMethodInvesteeMember		      
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest $ 5,836,047,000us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest $ 6,526,681,000us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest                          
[1] The Company’s guarantee obligation, net of cumulative lease payments, was 72.2 billion Japanese yen, or approximately $606 million based upon the exchange rate at March 29, 2015.