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Share Repurchases (Details Textuals) (USD $)
 12 Months Ended 0 Months Ended 3 Months Ended
Dec. 28, 2014
Dec. 29, 2013
Dec. 30, 2012
Apr. 08, 2014
Dec. 29, 2013
Jul. 31, 2013
Jan. 01, 2012
Share Repurchase Program Summary              
Stock Repurchase Program, Authorized Amount           $ 2,500,000,000us-gaap_StockRepurchaseProgramAuthorizedAmount1  
Share Repurchase Program, Remaining Authorized Repurchase Amount 626,700,000us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1            
Payments for Repurchase of Common Stock During Period 1,341,476,000us-gaap_PaymentsForRepurchaseOfCommonStock 1,589,539,000us-gaap_PaymentsForRepurchaseOfCommonStock 230,081,000us-gaap_PaymentsForRepurchaseOfCommonStock        
Share-based Benefit Plan Repurchases              
Payments Related to Tax Withholding for Share-based Compensation 41,300,000us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation            
10b-5 Repurchase Program [Member]              
Share Repurchase Program Summary              
Stock Repurchase Program, Authorized Amount     750,000,000us-gaap_StockRepurchaseProgramAuthorizedAmount1
/ us-gaap_ShareRepurchaseProgramAxis
= sndk_RepurchaseProgram1Member		       500,000,000us-gaap_StockRepurchaseProgramAuthorizedAmount1
/ us-gaap_ShareRepurchaseProgramAxis
= sndk_RepurchaseProgram1Member
Structured Share Repurchase Program [Member]              
Share Repurchase Program Summary              
Share Repurchased and Retired During Program, Shares 45,300,000sndk_StockRepurchasedAndRetiredDuringProgramShares
/ us-gaap_ShareRepurchaseProgramAxis
= sndk_RepurchaseProgram2Member		            
Payments for Repurchase of Common Stock, Aggregate 3,120,000,000sndk_PaymentsForRepurchaseOfCommonStockAggregate
/ us-gaap_ShareRepurchaseProgramAxis
= sndk_RepurchaseProgram2Member		            
Stock Repurchased and Retired During Period, Shares 14,300,000us-gaap_StockRepurchasedAndRetiredDuringPeriodShares
/ us-gaap_ShareRepurchaseProgramAxis
= sndk_RepurchaseProgram2Member		            
Payments for Repurchase of Common Stock During Period 1,300,000,000us-gaap_PaymentsForRepurchaseOfCommonStock
/ us-gaap_ShareRepurchaseProgramAxis
= sndk_RepurchaseProgram2Member		            
Accelerated Share Repurchase Program [Member]              
Share Repurchase Program Summary              
Share Repurchased and Retired During Program, Shares 15,100,000sndk_StockRepurchasedAndRetiredDuringProgramShares
/ us-gaap_ShareRepurchaseProgramAxis
= sndk_AcceleratedShareRepurchaseProgramMember		            
Stock Repurchased and Retired During Period, Shares       600,000us-gaap_StockRepurchasedAndRetiredDuringPeriodShares
/ us-gaap_ShareRepurchaseProgramAxis
= sndk_AcceleratedShareRepurchaseProgramMember		 14,500,000us-gaap_StockRepurchasedAndRetiredDuringPeriodShares
/ us-gaap_ShareRepurchaseProgramAxis
= sndk_AcceleratedShareRepurchaseProgramMember		    
Accelerated Share Repurchase Program              
Upfront Payment Under Accelerated Share Repurchase Program           1,000,000,000sndk_UpfrontPaymentUnderAcceleratedShareRepurchaseProgram
/ us-gaap_ShareRepurchaseProgramAxis
= sndk_AcceleratedShareRepurchaseProgramMember		  
Accelerated Share Repurchases, Final Price Paid Per Share       $ 66.07us-gaap_AcceleratedShareRepurchasesFinalPricePaidPerShare
/ us-gaap_ShareRepurchaseProgramAxis
= sndk_AcceleratedShareRepurchaseProgramMember		      
Program End Date Apr. 08, 2014            
Subsequent Event [Member]              
Share Repurchase Program Summary              
Stock Repurchase Program, Authorized Amount $ 2,500,000,000us-gaap_StockRepurchaseProgramAuthorizedAmount1
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember