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Financing Narrative (Details)
$ in Millions, ¥ in Billions
9 Months Ended
Aug. 24, 2017
JPY (¥)
Jun. 15, 2016
USD ($)
Sep. 29, 2017
USD ($)
Sep. 30, 2016
USD ($)
Aug. 28, 2017
JPY (¥)
Dec. 31, 2016
USD ($)
Jun. 16, 2016
USD ($)
Debt Instrument [Line Items]              
Debt discounts, premiums and issuance costs     $ 18.3     $ 20.1  
Proceeds from borrowings (maturities longer than 90 days)     125.9 $ 2,983.0      
Revolving Credit Facility [Member]              
Debt Instrument [Line Items]              
Debt Instrument, Term   5 years          
Line of Credit Facility, Current Borrowing Capacity             $ 1,500.0
Yen Term Loan [Member]              
Debt Instrument [Line Items]              
Debt Instrument, Term 5 years            
Long-term Debt | ¥         ¥ 13.8    
Proceeds from borrowings (maturities longer than 90 days)     $ 126.0        
Yen Term Loan Total Available | ¥ ¥ 13.8            
Yen Term Loan Interest Rate at Period End     0.50%        
Yen Term Loan Interest Rate During Period Outstanding     0.50%        
Senior Notes [Member]              
Debt Instrument [Line Items]              
Debt Instrument, Face Amount   $ 2,500.0