New Accounting Pronouncements (Details) - Accounting Standards Update 2014-09 [Member] - USD ($) $ in Millions	12 Months Ended
Dec. 30, 2017	Dec. 31, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost Of Sales, Modified Retrospective Basis Effect	$ 161.1	$ 149.0
Revenue, modified retrospective basis effect	$ 161.1	$ 149.0

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.

No definition available.

Name:	us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration