Sales of Receivables - Sales Receivables (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019	Dec. 31, 2019
Receivables [Abstract]
Accounts receivable sales proceeds	$ 82	$ 4	$ 238	$ 31
Long-term receivables sales proceeds	45	56	115	132
Total proceeds from receivable sales	127	$ 60	353	$ 163
Servicing obligations for long-term receivables	1,000		1,000		$ 984
Long-term financing	$ 59		$ 59		$ 78