Fair Value Measurements - Summary of Activity Related to Equity Investments (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 29, 2019	Dec. 30, 2018
Other Investment Not Readily Marketable [Line Items]
Business Combination, Contingent Consideration, Liability	$ 1,596	$ 335
Equity Investment [Roll Forward]
Non Current Other Assets	5,307	$ 4,182
Equity Securities | Equity Investments with readily determinable value
Equity Investment [Roll Forward]
Carrying value, beginning of period	511
Changes in Fair Value Reflected in Net Income	201
Sales/ Purchases/Other	151
Carrying value, end of period	863
Non Current Other Assets	863
Equity Securities | Equity Investments without readily determinable value
Equity Investment [Roll Forward]
Carrying value, beginning of period	681
Changes in Fair Value Reflected in Net Income	(28)
Sales/ Purchases/Other	46
Carrying value, end of period	699
Non Current Other Assets	$ 699