Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	9 Months Ended
	Oct. 02, 2021	Sep. 26, 2020	Dec. 31, 2020	Dec. 31, 2019
Non-cash Investing and Financing Activities [Abstract]
Acquired but unpaid property, plant and equipment	$ 257	$ 134
Fair value of contingent consideration	179
Declared but unpaid dividends	104	88
Issuance of stock upon vesting of restricted stock units	237	209
Cash and Cash Equivalents	12,027		$ 10,325
Restricted Cash Included in Other Current Assets	20		10
Restricted Cash Included in Other Assets	1		1
Cash, Cash Equivalents and Restricted Cash	$ 12,048	$ 7,570	$ 10,336	$ 2,422
Restricted Cash and Cash Equivalents, Current, Asset, Statement of Financial Position [Extensible List]	Other current assets
Restricted Cash and Cash Equivalents, Noncurrent, Asset, Statement of Financial Position [Extensible List]	Other Assets