Acquisitions (Schedule of Pro Forma Financial Information) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jul. 02, 2011	Jun. 30, 2012	Jul. 02, 2011
Business Combinations [Abstract]
Pro forma net sales		$ 904.5		$ 1,768.6
Pro forma net income		$ 48.3		$ 105.6
Basic earnings per share as reported	$ 1.50	$ 0.89	$ 2.68	$ 1.89
Pro forma basic earnings per share		$ 1.17		$ 2.55
Diluted earnings per share as reported	$ 1.49	$ 0.88	$ 2.65	$ 1.87
Pro forma diluted earnings per share		$ 1.15		$ 2.51