Composition of Certain Financial Statement Captions (Schedule of Certain Financial Statement Captions) (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 03, 2020	Dec. 28, 2018	Dec. 29, 2018
Other current assets:
Transition costs and project assets	$ 98	$ 145
Pre-contract costs	6	41
Other	306	357
Other current assets	410	543
Other assets:
Transition costs and project assets	207	22
Equity method investments	19	26
Other	200	134
Other assets	426	182
Accounts payable and accrued liabilities:
Accrued liabilities	822	650
Accounts payable	592	547
Deferred revenue	400	276
Other	23	18
Total accounts payable and accrued liabilities	1,837	1,491	$ 1,623
Accrued payroll and employee benefits:
Accrued vacation	232	225
Salaries, bonuses and amounts withheld from employees’ compensation	203	248
Total Accrued payroll and employee benefits	435	473
Amortization of transition costs and project assets	417	146
Dividends received from equity method investments	$ 25	$ 29