Restructuring and Cost Reduction Activities Reserves Rollforward (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019
Restructuring Reserve [Roll Forward]
Liability, beginning balance	$ 38	$ 73
Restructuring charge	29	113
Cash payments	(45)	(141)
Non-cash charges and other	6	(7)
Liability, ending balance	28	38
Employee related cost
Restructuring Reserve [Roll Forward]
Liability, beginning balance	37	62
Restructuring charge	29	49
Cash payments	(38)	(74)
Restructuring Reserve, Period Increase (Decrease)		0
Non-cash charges and other	0
Liability, ending balance	28	37
Pension curtailment (gain) loss, net
Restructuring Reserve [Roll Forward]
Liability, beginning balance	0	0
Restructuring charge	(8)	(5)
Cash payments	0	0
Restructuring Reserve, Period Increase (Decrease)		5
Non-cash charges and other	8
Liability, ending balance	0	0
Asset impairment
Restructuring Reserve [Roll Forward]
Liability, beginning balance	0	0
Restructuring charge	0	0
Cash payments	0	0
Non-cash charges and other	0	0
Liability, ending balance	0	0
Asset related costs
Restructuring Reserve [Roll Forward]
Liability, beginning balance	0	1
Restructuring charge	2	21
Cash payments	0	(10)
Non-cash charges and other	(2)	(12)
Liability, ending balance	0	0
Other cost
Restructuring Reserve [Roll Forward]
Liability, beginning balance	1	10
Restructuring charge	6	48
Cash payments	(7)	(57)
Non-cash charges and other	0	0
Liability, ending balance	$ 0	$ 1