Investments and Fair Value Measurements - Changes in Estimated Fair Value of Acquisition Related Contingent Consideration Liabilities (Details) - Business Combination Contingent Consideration Liability $ in Millions	9 Months Ended
	Oct. 03, 2021 USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 0
Change in estimated fair value	(7)
Ending balance	769
GRAIL Inc
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Acquisitions	762
Other Acquisition
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Acquisitions	$ 14