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Debt (Narrative) (Details) - USD ($)
3 Months Ended 12 Months Ended
Oct. 02, 2015
Mar. 29, 2013
Jan. 01, 2016
Apr. 01, 2011
Senior Notes | 2.75% due September 15, 2015        
Debt Instrument [Line Items]        
Stated interest rate (as a percent)     2.75%  
Settlement of debt by cash payment $ 350,000,000      
Revolving Credit Facility | Line of Credit        
Debt Instrument [Line Items]        
Maximum borrowing capacity under revolving loans       $ 1,000,000,000.0
Revolving credit facility expiration date   Jun. 07, 2017    
Amount outstanding     $ 0