Income Taxes - Breakdown of net deferred tax assets (Details) - USD ($) $ in Millions	Dec. 31, 2016	Jan. 02, 2016
Breakdown of net deferred tax assets
Net deferred tax assets	$ 669	$ 647
Manufacturing group
Breakdown of net deferred tax assets
Other assets	793	778
Other liabilities	(4)	(24)
Finance group
Breakdown of net deferred tax assets
Other liabilities	$ (120)	$ (107)

Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32537-109319

Name:	us-gaap_DeferredTaxAssetsLiabilitiesNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant