Stockbased Compensation, Stock Option Disclosures (Details) - USD ($) shares in Millions, $ in Millions	9 Months Ended
Sep. 26, 2015	Sep. 27, 2014
Stock-based Compensation Expense Disclosure [Abstract]
Tax benefit related to employees' and directors' stock plans	$ 54.8	$ 60.9
Options Outstanding [Roll Forward]
Granted	1.8

Net number of share options (or share units) granted during the period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iv)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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