Schedule II - Valuation and Qualifying Accounts (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Movement in Valuation Allowances and Reserves [Roll Forward]
US deferred tax asset	$ 381.0
Income tax credits	5.1
Allowance for Doubtful Accounts [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance, January 1	4.3	1.4	0
Charges to costs and expenses	(0.2)	3.2	1.6
Write-offs, net of recoveries	(4.3)	(0.3)	(0.2)
Balance, December 31	(0.2)	4.3	1.4
Allowance For Warranties And Extraordinary Rework [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance, January 1	30.9	19.6	18.7
Charges to costs and expenses	38.3	12.0	18.4
Write-offs, net of recoveries	(0.6)	(0.9)	(17.5)
Exchange rate	0.1	0.2	0
Balance, December 31	68.7	30.9	19.6
Valuation Allowance of Deferred Tax Assets [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance, January 1	10.4	8.2	5.3
US deferred tax asset		0	0
Income tax credits	3.7	1.9	2.9
Depreciation and Amortization	0.2	0.3	0
Other	1.2	0	0
Balance, December 31	$ 396.5	$ 10.4	$ 8.2