Shareholders' Equity - Before and After Tax Components of Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Jan. 01, 2022
Pension and postretirement benefits adjustments, pre-tax:
Unrealized gains (losses), pre-tax	$ (102)	$ 285	$ 1,148
Amortization of net actuarial (gain) loss, pre-tax	(7)	83	150
Amortization of prior service cost, pre-tax	8	8	7
Recognition of prior service credit cost, pre-tax	(7)	(4)	(20)
Pension and postretirement benefits adjustments, net, pre-tax	(108)	372	1,285
Pension and postretirement benefits adjustments, tax:
Unrealized gains (losses), tax (expense) benefit	25	(67)	(271)
Amortization of net actuarial (gain) loss, tax (expense) benefit	2	(20)	(34)
Amortization of prior service cost, tax (expense) benefit	(3)	(2)	(3)
Recognition of prior service credit, tax (expense) benefit	2	0	4
Pension and postretirement benefits adjustments, net, tax (expense) benefit	26	(89)	(304)
Pension and postretirement benefits adjustments, after-tax:
Unrealized gains (losses), after-tax	(77)	218	877
Amortization of net actuarial (gain) loss, after-tax	(5)	63	116
Amortization of prior service cost, after-tax	5	6	4
Recognition of prior service credit, after-tax	(5)	(4)	(16)
Pension and postretirement benefits adjustments, net, after-tax	(82)	283	981
Foreign currency translation adjustments, pre-tax:
Foreign currency translation adjustments, pre-tax	45	(103)	(51)
Business disposition, pre-tax	0	0	14
Foreign currency translation adjustments, net, pre-tax	45	(103)	(37)
Foreign currency translation adjustments, tax:
Foreign currency translation adjustments, tax (expense) benefit	0	0	0
Business disposition, tax (expense) benefit	0	0	0
Foreign currency translation adjustments, net, tax (expense) benefit	0	0	0
Foreign currency translation adjustments, after-tax:
Foreign currency translation adjustments, after-tax	45	(103)	(51)
Business disposition, after-tax	0	0	14
Foreign currency translation adjustments, net, after-tax	45	(103)	(37)
Deferred gains (losses) on hedge contracts, pre-tax:
Current deferrals, pre-tax	(2)	(7)	3
Reclassification adjustments, pre-tax	8	0	(1)
Deferred gains (losses) on hedge contracts, net, pre-tax	6	(7)	2
Deferred gains (losses) on hedge contracts, tax:
Current deferrals, tax (expense) benefit	1	4	0
Reclassification adjustments, tax (expense) benefit	(2)	0	0
Deferred gains (losses) on hedge contracts, net, tax (expense) benefit	(1)	4	0
Deferred gains (losses) on hedge contracts, after-tax:
Current deferrals, after-tax	(1)	(3)	3
Reclassification adjustments, after-tax	6	0	(1)
Deferred gains (losses) on hedge contracts, net, after-tax	5	(3)	2
Other comprehensive income (loss), pre-tax	(57)	262	1,250
Other comprehensive income (loss), tax (expense) benefit	25	(85)	(304)
Total other comprehensive income (loss), net of tax	$ (32)	$ 177	$ 946