Financial Instruments (Cash, Cash Equivalents, and Marketable Securities Fair Value Measurements) (Details) - USD ($) $ in Millions	Mar. 28, 2020	Dec. 28, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Fair Value Asset (Liability)	$ 363	$ 42
Cash and Cash Equivalents	295	1
Marketable Securities	55	37
Other Current Assets		2
Other Current Liabilities	13	2
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Fair Value Asset (Liability)	1	1
Cash and Cash Equivalents	1	1
Marketable Securities	0	0
Other Current Assets		0
Other Current Liabilities	0	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Fair Value Asset (Liability)	362	41
Cash and Cash Equivalents	294	0
Marketable Securities	55	37
Other Current Assets		2
Other Current Liabilities	13	2
Government money market funds | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Fair Value Asset (Liability)	1	1
Cash and Cash Equivalents	1	1
Marketable Securities	0	0
Other Current Assets		0
Other Current Liabilities	0	0
Commercial paper | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Fair Value Asset (Liability)	349	37
Cash and Cash Equivalents	294	0
Marketable Securities	55	37
Other Current Assets		0
Other Current Liabilities	0	0
Foreign Exchange Contract [Member] | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Fair Value Asset (Liability)	(13)	4
Cash and Cash Equivalents	0	0
Marketable Securities	0	0
Other Current Assets		2
Other Current Liabilities	$ 13	$ 2