Commitments And Contingencies (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Jan. 02, 2015	Jan. 03, 2014	Dec. 28, 2012
Commitments and Contingencies Disclosure [Abstract]
Net rent expense under operating leases	$ 34.1us-gaap_OperatingLeasesRentExpenseNet	$ 32.2us-gaap_OperatingLeasesRentExpenseNet	$ 28.2us-gaap_OperatingLeasesRentExpenseNet
Unconditional purchase obligations	$ 125.3

Amount of the recorded obligation to transfer funds in the future for fixed or minimum amounts or quantities of goods or services at fixed or minimum prices (for example, as in take-or-pay contracts or throughput contracts).

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 440

-SubTopic 10

-Section 50

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25383-109308

Name:	us-gaap_RecordedUnconditionalPurchaseObligation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant