Quarterly report pursuant to Section 13 or 15(d)

Financial Instruments (Narrative) (Details)

v3.7.0.1
Financial Instruments (Narrative) (Details) - USD ($)
$ in Millions
Apr. 01, 2017
Dec. 31, 2016
Schedule of Investments [Line Items]    
Debt issuance costs, net $ 24 $ 25
Fair Value, Inputs, Level 1 [Member] | Money Market Funds [Member]    
Schedule of Investments [Line Items]    
Available-for-sale investments used as collateral 2 2
Fair Value, Inputs, Level 1 [Member] | Mutual Funds    
Schedule of Investments [Line Items]    
Restricted investments 15 15
Cash Flow Hedging [Member] | Foreign Currency Forward Contracts    
Schedule of Investments [Line Items]    
Derivative, notional amount $ 201 $ 138