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Long-Term Debt (Narrative) (Details) - USD ($)
$ in Millions
Dec. 30, 2014
Mar. 31, 2017
Debt Instrument [Line Items]    
Debt Instrument, Term 5 years  
Repayments of Debt $ 250  
Reduction in revolving credit borrowings $ 120  
Five-year term [Member]    
Debt Instrument [Line Items]    
Debt Instrument, Term 5 years  
Term loan $ 150  
Debt Instrument, Interest Rate, Effective Percentage   2.94%
Seven-year term [Member]    
Debt Instrument [Line Items]    
Debt Instrument, Term 7 years  
Term loan $ 220  
Debt Instrument, Interest Rate, Effective Percentage   3.48%