Acquisitions ProForma net sales (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
Dec. 29, 2012	Dec. 31, 2011	Dec. 31, 2010
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Revenue		$ 3,342.7	$ 2,943.8
Business Acquisition, Pro Forma Net Income (Loss)		$ 213.0	$ 147.6
Earnings Per Share, Basic	$ 4,680,000.00	$ 3.84	$ 3.91
Business Acquisition, Pro Forma Earnings Per Share, Basic		$ 5.13	$ 3.59
Earnings Per Share, Diluted	$ 4,640,000.00	$ 3.79	$ 3.84
Business Acquisition, Pro Forma Earnings Per Share, Diluted		$ 5.08	$ 3.54

The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References+ Details

The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 3: http://www.xbrl.org/2003/role/presentationRef

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Reference 7: http://www.xbrl.org/2003/role/presentationRef

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-Name Emerging Issues Task Force (EITF)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 8: http://www.xbrl.org/2003/role/presentationRef

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-Publisher SEC

-Name Regulation S-X (SX)

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+ Details

- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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