Quarterly report pursuant to Section 13 or 15(d)

Financial Instruments (Cash, Cash Equivalents and Marketable Securities Fair Value Measurements) (Details)

v3.7.0.1
Financial Instruments (Cash, Cash Equivalents and Marketable Securities Fair Value Measurements) (Details) - USD ($)
$ in Millions
Jul. 01, 2017
Dec. 31, 2016
Schedule of Investments [Line Items]    
Cash, Cash Equivalents, and Marketable Securities, Fair Value Disclosure $ 844 $ 1,264
Cash and Cash Equivalents, Fair Value Disclosure 760 1,264
Marketable Securities, Current, Fair Value Disclosure 84  
Fair Value, Inputs, Level 1 [Member]    
Schedule of Investments [Line Items]    
Cash, Cash Equivalents, and Marketable Securities, Fair Value Disclosure 165 50
Cash and Cash Equivalents, Fair Value Disclosure 165 50
Marketable Securities, Current, Fair Value Disclosure 0  
Fair Value, Inputs, Level 2 [Member]    
Schedule of Investments [Line Items]    
Cash, Cash Equivalents, and Marketable Securities, Fair Value Disclosure 589 1,147
Cash and Cash Equivalents, Fair Value Disclosure 505 1,147
Marketable Securities, Current, Fair Value Disclosure 84  
Cash [Member]    
Schedule of Investments [Line Items]    
Cash, Cash Equivalents, and Marketable Securities, Fair Value Disclosure 90 67
Cash and Cash Equivalents, Fair Value Disclosure 90 67
Marketable Securities, Current, Fair Value Disclosure 0  
Money Market Funds [Member]    
Schedule of Investments [Line Items]    
Cash, Cash Equivalents, and Marketable Securities, Fair Value Disclosure 165 50
Cash and Cash Equivalents, Fair Value Disclosure 165 50
Marketable Securities, Current, Fair Value Disclosure 0  
Commercial Paper [Member] | Fair Value, Inputs, Level 2 [Member]    
Schedule of Investments [Line Items]    
Cash, Cash Equivalents, and Marketable Securities, Fair Value Disclosure 589 1,147
Cash and Cash Equivalents, Fair Value Disclosure 505 $ 1,147
Marketable Securities, Current, Fair Value Disclosure $ 84