Stock Compensation Summary of Share-based Compensation (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Jan. 01, 2022	Jan. 02, 2021	Dec. 28, 2019
Share-based Payment Arrangement [Abstract]
Outstanding, beginning of period - shares	14	14	14
Granted - shares	3	3	3
Exercised - shares	(1)	(2)	(1)
Forfeitures and expirations - shares	(1)	(1)	(2)
Outstanding, end of period - shares	15	14	14
Exerciseable, end of period - shares	10	10	10
Outstanding, beginning of period - weighted-average exercise price	$ 65	$ 65	$ 66
Granted - weighted-average exercise price	58	65	57
Exercised - weighted-average exercise price	56	59	56
Forfeitures and expirations - weighted-average exercise price	66	68	67
Outstanding, end of period - weighted-average exercise price	64	65	65
Exercisable, end of period - weighted-average exercise price	$ 66	$ 66	$ 65
Outstanding, end of period - weighted-average remaining contractual term (years)	5 years 8 months 12 days
Excerciseable, end of period - weighted-average remaining contractual term (years)	4 years 4 months 24 days
Outstanding, end of period - aggregate intrinsic value	$ 44
Exerciseable, end of period - aggregate intrinsic value	22
Total intrinsic value of options exercised	$ 6	$ 17	$ 7