Fair Value Measurements - Summary of Activity Related to Equity Investments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 29, 2020	Dec. 29, 2019
Other Investment Not Readily Marketable [Line Items]
Business Combination, Contingent Consideration, Liability	$ 784	$ 1,715
Equity Investment [Roll Forward]
Non Current Other Assets	5,042	$ 5,695
Equity Securities | Equity Investments with readily determinable value
Equity Investment [Roll Forward]
Carrying value, beginning of period	1,148
Changes in Fair Value Reflected in Net Income	(327)
Sales/ Purchases/Other	5
Carrying value, end of period	826
Non Current Other Assets	826
Equity Securities | Equity Investments without readily determinable value
Equity Investment [Roll Forward]
Carrying value, beginning of period	712
Changes in Fair Value Reflected in Net Income	(33)
Sales/ Purchases/Other	15
Carrying value, end of period	694
Non Current Other Assets	$ 694