Restructuring (Details) (USD $)	3 Months Ended	12 Months Ended
	Dec. 31, 2010	Dec. 31, 2011	Dec. 31, 2010
Restructuring liability
Restructuring reserves as of December 31, 2010		$ 66,400,000
Expense		18,200,000
Payments		(85,700,000)
Adjustments to previous estimates, net		(2,900,000)
Other adjustments		5,400,000
Restructuring reserves as of Dec 31, 2011	66,400,000	1,400,000	66,400,000
Restructuring (Textual) [Abstract]
Restructuring charge	75,200,000	19,026,000	75,153,000
Restructuring (Textual) [Abstract]
Headcount reduction percentage due to consolidation of sites		13.00%
Workforce reduction [Member]
Restructuring liability
Restructuring reserves as of December 31, 2010		60,600,000
Expense		15,800,000
Payments		(81,800,000)
Adjustments to previous estimates, net		(2,900,000)
Other adjustments		8,600,000
Restructuring reserves as of Dec 31, 2011	60,600,000	300,000	60,600,000
Restructuring (Textual) [Abstract]
Restructuring charge		12,800,000	67,200,000
Facility consolidation [Member]
Restructuring liability
Restructuring reserves as of December 31, 2010		5,800,000
Expense		2,400,000
Payments		(3,900,000)
Other adjustments		(3,200,000)
Restructuring reserves as of Dec 31, 2011	5,800,000	1,100,000	5,800,000
Restructuring (Textual) [Abstract]
Restructuring charge		$ 6,200,000	$ 8,000,000