Derivative Instruments and Fair Value Measurements - Assets and liabilities not recorded at fair value (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 30, 2017
Manufacturing group | Carrying Value
Financial instruments not reflected at fair value
Debt, excluding leases	$ (3,004)	$ (3,007)
Manufacturing group | Estimated Fair Value
Financial instruments not reflected at fair value
Debt, excluding leases	(3,018)	(3,136)
Finance group
Financial instruments not reflected at fair value
Debt	(809)	(824)
Finance group | Carrying Value
Financial instruments not reflected at fair value
Finance receivables, excluding leases	591	643
Debt	(809)	(824)
Finance group | Estimated Fair Value
Financial instruments not reflected at fair value
Finance receivables, excluding leases	615	675
Debt	$ (787)	$ (799)