Quarterly report pursuant to Section 13 or 15(d)

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

v3.10.0.1
Financial Instruments (Cash, Cash Equivalents, and Marketable Securities Fair Value Measurements) (Details) - USD ($)
$ in Millions
Sep. 29, 2018
Dec. 30, 2017
Schedule of Investments [Line Items]    
Total Fair Value $ 1,056 $ 1,185
Cash and Cash Equivalents 1,046 1,185
Short-Term Marketable Securities [1] 10 0
Level 1    
Schedule of Investments [Line Items]    
Total Fair Value 205 395
Cash and Cash Equivalents 205 395
Short-Term Marketable Securities 0  
Level 2    
Schedule of Investments [Line Items]    
Total Fair Value 759 682
Cash and Cash Equivalents 749 682
Short-Term Marketable Securities 10  
Cash    
Schedule of Investments [Line Items]    
Total Fair Value 92 108
Cash and Cash Equivalents 92 108
Short-Term Marketable Securities 0  
Government money market funds | Level 1    
Schedule of Investments [Line Items]    
Total Fair Value 205 395
Cash and Cash Equivalents 205 395
Short-Term Marketable Securities 0  
Commercial paper | Level 2    
Schedule of Investments [Line Items]    
Total Fair Value 759 682
Cash and Cash Equivalents 749 $ 682
Short-Term Marketable Securities $ 10  
[1] Prior year amounts adjusted to reflect the retrospective application of ASU 2014-09, Revenue from Contracts with Customers. Refer to Note 1.