Stock Compensation Cash used to settle equity instruments (Details) - USD ($) $ in Millions	12 Months Ended
Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Total cash received from option exercises and similar instruments	$ 261	$ 217	$ 475
Windfall benefits classified as financing cash flow	$ 14	$ 11	$ 24

Aggregate proceeds received by the entity during the annual period from exercises of stock or unit options and conversion of similar instruments granted under equity-based payment arrangements.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (j)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Name:	us-gaap_EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration