Basis of Presentation (Details) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jul. 04, 2020 USD ($) $ / shares	Jun. 29, 2019 USD ($) $ / shares	Jul. 04, 2020 USD ($) item $ / shares	Jun. 29, 2019 USD ($) $ / shares
Number of borrowing groups | item			2
Cumulative catch-up method
Cumulative catch-up adjustments	$ 17	$ 27	$ 19	$ 58
Change in accounting estimate financial effect, increase in net income or decrease in net loss	$ 13	$ 21	$ 14	$ 44
Change in accounting estimate financial effect increase in earnings per share diluted or decrease in earnings per share diluted | $ / shares	$ 0.06	$ 0.09	$ 0.06	$ 0.19
Gross favorable adjustments	$ 46	$ 46	$ 73	$ 99
Gross unfavorable adjustments	$ 29	$ 19	$ 54	$ 41