Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.2
Financial Instruments (Cash, Cash Equivalents, and Marketable Securities Fair Value Measurements) (Details) - USD ($)
$ in Millions
Jun. 29, 2019
Dec. 29, 2018
Schedule of Investments [Line Items]    
Total Fair Value $ 1,128 $ 1,156
Cash and Cash Equivalents 963 1,078
Short-Term Marketable Securities 165 78
Level 1    
Schedule of Investments [Line Items]    
Total Fair Value 1 275
Cash and Cash Equivalents 1 275
Short-Term Marketable Securities 0 0
Level 2    
Schedule of Investments [Line Items]    
Total Fair Value 185 566
Cash and Cash Equivalents 20 488
Short-Term Marketable Securities 165 78
Cash    
Schedule of Investments [Line Items]    
Total Fair Value 942 315
Cash and Cash Equivalents 942 315
Short-Term Marketable Securities 0 0
Government money market funds | Level 1    
Schedule of Investments [Line Items]    
Total Fair Value 1 275
Cash and Cash Equivalents 1 275
Short-Term Marketable Securities 0 0
Commercial paper | Level 2    
Schedule of Investments [Line Items]    
Total Fair Value 185 566
Cash and Cash Equivalents 20 488
Short-Term Marketable Securities $ 165 $ 78