Product Warranties (Balance Sheet Classification Of Product Warranty Liabilities) (Details) (USD $) In Millions, unless otherwise specified	Mar. 30, 2012	Dec. 30, 2011	Apr. 01, 2011	Dec. 31, 2010
Product Warranties [Abstract]
Other accrued liabilities	$ 8.2		$ 9.2
Other long-term liabilities	9.1		12.0
Total product warranty liabilities	$ 17.3	$ 17.0	$ 21.2	$ 19.4

Amount as of the balance sheet date of the aggregate standard product warranty liability. Does not include the balance for the extended product warranty liability.

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

-Publisher FASB

-Name FASB Interpretation (FIN)

-Number 45

-Paragraph 14

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 8

-Subparagraph (c)(1),(c)(5)

-URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249

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