Stock Transactions And Stock-Based Compensation (Components of Stock-Based Compensation Program) (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 29, 2019	Mar. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pretax compensation expense	$ 39.2	$ 33.3
Income tax benefit	(8.3)	(7.0)
Stock-based compensation expense, net of income taxes	30.9	26.3
Restricted stock units (“RSUs”)/performance stock units (“PSUs”)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pretax compensation expense	24.3	20.9
Income tax benefit	(5.1)	(4.4)
Stock-based compensation expense, net of income taxes	19.2	16.5
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pretax compensation expense	14.9	12.4
Income tax benefit	(3.2)	(2.6)
Stock-based compensation expense, net of income taxes	$ 11.7	$ 9.8

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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-Paragraph 1
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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The amount of expense, net of income tax, recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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