Business Acquisitions, Goodwill and Intangible Assets (Details 5) (USD $) In Millions, unless otherwise specified	Jan. 01, 2012	Jan. 02, 2011
summary of carrying value of other acquired intangible assets
Other acquired intangible assets subject to amortization, Gross carrying amount	$ 208.6	$ 136.6
Other acquired intangible assets subject to amortization, accumulated amortization	84.5	60.9
Other acquired intangible assets subject to amortization, Net carrying amount	181.4	113.9
Other acquired intangible assets not subject to amortization
Other acquired intangible assets not subject to amortization, gross	74.0	16.3
Total other acquired intangible, gross carrying amount	265.9	174.8
Total other acquired intangible, accumulated amortization	84.5	60.9
Total other acquired intangible, net carrying amount	181.4	113.9
Trademarks [Member]
Other acquired intangible assets not subject to amortization
Other acquired intangible assets not subject to amortization, gross	57.3	38.2
Other acquired intangible assets not subject to amortization, accumulated amortization	0	0
Proprietary Technology [Member]
summary of carrying value of other acquired intangible assets
Other acquired intangible assets subject to amortization, Gross carrying amount	124.2	79.5
Other acquired intangible assets subject to amortization, accumulated amortization	47.0	33.4
Other acquired intangible assets subject to amortization, Net carrying amount	77.2	46.1
Customer Lists [Member]
summary of carrying value of other acquired intangible assets
Other acquired intangible assets subject to amortization, Gross carrying amount	68.5	44.5
Other acquired intangible assets subject to amortization, accumulated amortization	25.3	17.6
Other acquired intangible assets subject to amortization, Net carrying amount	43.2	26.9
Patents [Member]
summary of carrying value of other acquired intangible assets
Other acquired intangible assets subject to amortization, Gross carrying amount	0.7	0.7
Other acquired intangible assets subject to amortization, accumulated amortization	0.5	0.5
Other acquired intangible assets subject to amortization, Net carrying amount	0.2	0.2
Noncompete Agreements [Member]
summary of carrying value of other acquired intangible assets
Other acquired intangible assets subject to amortization, Gross carrying amount	0.9	1.0
Other acquired intangible assets subject to amortization, accumulated amortization	0.9	0.9
Other acquired intangible assets subject to amortization, Net carrying amount	0	0.1
Trademarks [Member]
summary of carrying value of other acquired intangible assets
Other acquired intangible assets subject to amortization, Gross carrying amount	11.1	3.2
Other acquired intangible assets subject to amortization, accumulated amortization	9.6	1.0
Other acquired intangible assets subject to amortization, Net carrying amount	1.5	2.2
Backlog [Member]
summary of carrying value of other acquired intangible assets
Other acquired intangible assets subject to amortization, Gross carrying amount	3.2	7.7
Other acquired intangible assets subject to amortization, accumulated amortization	1.2	7.5
Other acquired intangible assets subject to amortization, Net carrying amount	$ 2.0	$ 0.2