Fair Value Measurements - Summary of Activity Related to Equity Investments (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 28, 2020	Dec. 29, 2019
Other Investment Not Readily Marketable [Line Items]
Business Combination, Contingent Consideration, Liability	$ 796	$ 1,715
Equity Investment [Roll Forward]
Non Current Other Assets	5,782	$ 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	196
Sales/ Purchases/Other	144
Carrying value, end of period	1,488
Non Current Other Assets	1,488
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	(28)
Sales/ Purchases/Other	28
Carrying value, end of period	712
Non Current Other Assets	$ 712