Employee Benefits - Contributions to Employee Benefit Plans (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020	Jan. 02, 2021
Defined Benefit Plan Disclosure [Line Items]
Employer contributions to employee benefit plans	$ 8	$ 6	$ 10	$ 12	$ 32
Total current year projected employer contributions	25		25
Global Plans | Pension
Defined Benefit Plan Disclosure [Line Items]
Employer contributions to employee benefit plans	1	0	2	3	8
Total current year projected employer contributions	6		6
U.S. and Canada | Nonpension postretirement
Defined Benefit Plan Disclosure [Line Items]
Employer contributions to employee benefit plans	7	$ 6	8	$ 9	$ 24
Total current year projected employer contributions	$ 19		$ 19