Goodwill and Intangible Assets - Purchased Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 30, 2014	Mar. 31, 2013	Dec. 29, 2013
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Value	$ 207.7		$ 207.7
Accumulated Amortization	(150.3)		(144.7)
Net Value	57.4		63.0
Gross Value	6.9		6.9
Gross Value	214.6		214.6
Net Value	64.3		69.9
Consolidated amortization expense related to intangible assets subject to amortization	5.6	9.3
Trade names
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Value	6.9		6.9
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Value	97.7		97.7
Accumulated Amortization	(58.0)		(53.7)
Net Value	39.7		44.0
Contracts and backlog
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Value	80.0		80.0
Accumulated Amortization	(79.0)		(78.7)
Net Value	1.0		1.3
Developed technology and technical know-how
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Value	22.1		22.1
Accumulated Amortization	(9.1)		(8.6)
Net Value	13.0		13.5
Trade names
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Value	6.1		6.1
Accumulated Amortization	(3.6)		(3.1)
Net Value	2.5		3.0
Favorable operating lease
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Value	1.8		1.8
Accumulated Amortization	(0.6)		(0.6)
Net Value	$ 1.2		$ 1.2