Income Taxes (Reconciliation Of The Beginning And Ending Amount Of Unrecognized Tax Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Income Tax Disclosure [Abstract]
Unrecognized Tax Benefits - Beginning of Year	$ 8.3	$ 5.8	$ 4.4
Unrecognized Tax Benefits, December 28, 2013	0.0	0.0	0.1
Gross Increases from Current Period Tax Positions	2.0	4.0	3.6
Settlements with Taxing Authorities	0.0	(1.3)	(2.1)
Lapse of Statute of Limitations	(0.3)	(0.2)	(0.2)
Unrecognized Tax Benefits - End of Year	$ 10.0	$ 8.3	$ 5.8

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- Definition

Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15A
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Unrecognized Tax Benefit
-URI http://asc.fasb.org/extlink&oid=6527854

+ Details

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- Definition

Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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- Definition

Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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- Definition

Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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