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Debt - Commercial Paper (Details) - USD ($)
3 Months Ended
Jul. 31, 2015
Feb. 28, 2014
Apr. 01, 2017
Dec. 31, 2016
Commercial Paper        
Line of Credit Facility [Line Items]        
Utilized borrowings under credit facility     $ 1,458,328,000  
Commercial Paper | United States        
Line of Credit Facility [Line Items]        
Maturity period of debt     19 years 5 months 8 days  
Maximum borrowing capacity under credit facility     $ 1,800,000,000  
Weighted average interest rate on debt     1.23%  
Commercial Paper | United States | Maximum        
Line of Credit Facility [Line Items]        
Maturity period of debt   397 days    
Commercial Paper | Europe        
Line of Credit Facility [Line Items]        
Maturity period of debt     41 years 7 months 3 days  
Weighted average interest rate on debt     0.15%  
Commercial Paper | Europe | Maximum        
Line of Credit Facility [Line Items]        
Maturity period of debt 183 days      
Carrying value | United States        
Line of Credit Facility [Line Items]        
U.S. commercial paper     $ 578,200,000 $ 283,800,000
Carrying value | Europe        
Line of Credit Facility [Line Items]        
U.S. commercial paper     $ 880,128,000 $ 536,503,000