Fair Value Measurements and Fair Value of Financial Instruments Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation (Details) - Contingent Consideration [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ 227	$ 54	$ 70	$ 55
Acquisitions (including assumed balances)	17		179
Payments	(35)	(1)	(42)	(2)
Changes in fair value included in earnings	(60)		(58)
Ending Balance	$ 149	$ 53	$ 149	$ 53
Fair Value, Recurring Basis, Unobservable Input Reconciliation, Liability, Gain (Loss), Statement of Income [Extensible List]			Selling, general and administrative expenses