Fair Value Measurements - Assets and Liabilities Measured on a Recurring Basis (Details) - Fair value - USD ($) $ in Millions	Apr. 03, 2020	Jan. 03, 2020
Assets
Deferred compensation plan assets	$ 76	$ 87
Derivatives (foreign currency forward contracts)	11	10
Total assets measured at fair value	87	97
Liabilities
Deferred compensation plan liabilities	63	71
Derivatives (foreign currency forward contracts)	27	8
Derivatives (treasury lock contracts)	135	56
Total liabilities measured at fair value	225	135
Equity securities and mutual funds
Liabilities
Deferred compensation plan liabilities	2	2
Equity and fixed income securities
Assets
Deferred compensation plan assets	49	58
Level 1
Assets
Deferred compensation plan assets	49	58
Derivatives (foreign currency forward contracts)	0	0
Total assets measured at fair value	49	58
Liabilities
Deferred compensation plan liabilities	2	2
Derivatives (foreign currency forward contracts)	0	0
Derivatives (treasury lock contracts)	0	0
Total liabilities measured at fair value	2	2
Level 1 | Equity securities and mutual funds
Liabilities
Deferred compensation plan liabilities	2	2
Level 1 | Equity and fixed income securities
Assets
Deferred compensation plan assets	49	58
Level 2
Assets
Deferred compensation plan assets	0	0
Derivatives (foreign currency forward contracts)	11	10
Total assets measured at fair value	11	10
Liabilities
Deferred compensation plan liabilities	0	0
Derivatives (foreign currency forward contracts)	27	8
Derivatives (treasury lock contracts)	135	56
Total liabilities measured at fair value	162	64
Level 2 | Equity securities and mutual funds
Liabilities
Deferred compensation plan liabilities	0	0
Level 2 | Equity and fixed income securities
Assets
Deferred compensation plan assets	0	0
Investments measured at NAV | Common/collective trusts and guaranteed investment contracts
Liabilities
Deferred compensation plan liabilities	61	69
Investments measured at NAV | Corporate-owned life insurance
Assets
Deferred compensation plan assets	$ 27	$ 29