Sales of Accounts Receivable (Details Textual) (USD $) In Millions, unless otherwise specified	6 Months Ended
Jun. 30, 2012	Jun. 25, 2011	Dec. 31, 2011
Sale of Accounts Receivable (Additional Textual) [Abstract]
Sale of accounts receivable	$ 154.8	$ 95.1
Additional receivables outstanding if receivables had not been sold	161.1		137.0
Accounts receivable sales programs [Member]
Sales of Accounts Receivable (Textual) [Abstract]
Financing costs associated with the sales of accounts receivable	$ 2.0	$ 1.8

Reflects the net positive or negative amount derived from subtracting from net proceeds of sale, the carrying amounts, net of allocated reserves, of accounts receivable transferred to a third party in a transaction that qualifies for sales treatment.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 20

-Section 50

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=13989330&loc=d3e107425-111719

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

-Publisher AICPA

-Name Statement of Position (SOP)

-Number 01-6

-Paragraph 13

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

Name:	us-gaap_GainLossOnSaleOfAccountsReceivable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration