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Fair Value Measurements (Details) - USD ($)
$ in Millions
Mar. 31, 2018
Apr. 01, 2017
Financial assets recorded at fair value:    
Derivative assets, fair value $ 12.3 $ 32.6
Financial liabilities recorded at fair value    
Derivative liabilities, fair value 110.0 21.7
Fair Value, Inputs, Level 2 [Member] | Fair Value Measurements, Recurring [Member]    
Financial assets recorded at fair value:    
Derivative assets, fair value 12.3 32.6
Financial liabilities recorded at fair value    
Derivative liabilities, fair value 110.0 21.7
Fair Value, Inputs, Level 2 [Member] | Fair Value Measurements, Recurring [Member] | Commercial Paper [Member]    
Financial assets recorded at fair value:    
Investments recorded at fair value 234.2 $ 0.0
Fair Value, Inputs, Level 2 [Member] | Fair Value Measurements, Recurring [Member] | Commercial Paper, Included in Short-term Investments    
Financial assets recorded at fair value:    
Investments recorded at fair value 219.2  
Fair Value, Inputs, Level 2 [Member] | Fair Value Measurements, Recurring [Member] | Commercial Paper, Included in Cash and Cash Equivalents [Member]    
Financial assets recorded at fair value:    
Investments recorded at fair value $ 15.0