Schedule of Other Expense/(Income) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Other Income and Expenses [Abstract]
Amortization of prior service costs/(credits)	$ (31)	$ (77)
Net pension and postretirement non-service cost/(benefit)	(43)	(43)
Loss/(gain) on sale of business	(2)	246
Interest income	9	6
Foreign exchange loss/(gain)	17	(4)
Other miscellaneous expense/(income)	17	(12)
Other expense/(income)	$ 81	$ 380