Derivative Instruments and Fair Value Measurements - Assets and liabilities not recorded at fair value (Details) - USD ($) $ in Millions	Apr. 04, 2020	Jan. 04, 2020
Manufacturing group | Carrying Value
Financial instruments not reflected at fair value
Debt, excluding leases	$ (4,335)	$ (3,097)
Manufacturing group | Estimated Fair Value
Financial instruments not reflected at fair value
Debt, excluding leases	(4,272)	(3,249)
Finance group
Financial instruments not reflected at fair value
Debt	(682)	(686)
Finance group | Carrying Value
Financial instruments not reflected at fair value
Finance receivables, excluding leases	494	493
Debt	(682)	(686)
Finance group | Estimated Fair Value
Financial instruments not reflected at fair value
Finance receivables, excluding leases	460	527
Debt	$ (545)	$ (634)