Supplementary Cash Flow Information and Restricted Cash (Supplementary Cash Flow Information) (Details) - USD ($) $ in Millions	6 Months Ended
Jul. 03, 2020	Jun. 28, 2019	Jan. 03, 2020	Dec. 28, 2018
Supplementary cash flow information:
Cash paid interest	$ 82	$ 84
Cash paid for income taxes, net of refunds	7	89
Non-cash investing activity:
Fixed asset additions	15	0
Non-cash financing activity:
Finance lease obligations	12	0
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents
Cash and cash equivalents	588		$ 668
Restricted cash	94		49
Total cash, cash equivalents and restricted cash	$ 682	$ 703	$ 717	$ 369

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