Business Acquisitions, Goodwill and Acquired Intangible Assets (Details 2) (USD $) In Millions, unless otherwise specified	Dec. 30, 2012	Jan. 01, 2012
Estimated fair values allocated to the assets acquired and liabilities
Current assets, excluding cash acquired	$ 116.2	$ 98.7
Property, plant and equipment	79.1	53.3
Goodwill	265.1	175.2
Other acquired intangible assets	109.0	93.5
Other long-term assets	5.3	0
Total assets acquired	574.7	420.7
Current liabilities	(61.8)	(37.7)
Long-term liabilities	(123.7)	(38.4)
Total liabilities assumed	(185.5)	(76.1)
Purchase price, net of cash acquired	$ 389.2	$ 344.6