Accounts Receivable and Finance Receivables - Accounts receivable (Details) - Manufacturing group - USD ($) $ in Millions	Jun. 29, 2019	Dec. 29, 2018
Accounts Receivable
Accounts Receivable, Gross	$ 1,016	$ 1,051
Allowance for doubtful accounts	(27)	(27)
Total accounts receivable, net	989	1,024
Commercial
Accounts Receivable
Accounts Receivable, Gross	874	885
U.S. Government contracts
Accounts Receivable
Accounts Receivable, Gross	$ 142	$ 166

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant