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
Apr. 01, 2017
Dec. 31, 2016
Schedule of Investments [Line Items]    
Cash, Cash Equivalents, and Marketable Securities, Fair Value Disclosure $ 943 $ 1,264
Cash and Cash Equivalents, Fair Value Disclosure 722 1,264
Marketable Securities, Current, Fair Value Disclosure 221  
Fair Value, Inputs, Level 1 [Member]    
Schedule of Investments [Line Items]    
Cash, Cash Equivalents, and Marketable Securities, Fair Value Disclosure 55 50
Cash and Cash Equivalents, Fair Value Disclosure 55 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 795 1,147
Cash and Cash Equivalents, Fair Value Disclosure 574 1,147
Marketable Securities, Current, Fair Value Disclosure 221  
Cash [Member]    
Schedule of Investments [Line Items]    
Cash, Cash Equivalents, and Marketable Securities, Fair Value Disclosure 93 67
Cash and Cash Equivalents, Fair Value Disclosure 93 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 55 50
Cash and Cash Equivalents, Fair Value Disclosure 55 50
Marketable Securities, Current, Fair Value Disclosure 0  
Commercial Paper [Member]    
Schedule of Investments [Line Items]    
Cash, Cash Equivalents, and Marketable Securities, Fair Value Disclosure 795 1,147
Marketable Securities, Current, Fair Value Disclosure 221  
Commercial Paper [Member] | Fair Value, Inputs, Level 2 [Member]    
Schedule of Investments [Line Items]    
Cash and Cash Equivalents, Fair Value Disclosure $ 574 $ 1,147