Supplemental Balance Sheet Information (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Accrued Liabilities, Current [Abstract]
Accrued Wages And Bonuses	$ 35.8	$ 28.0
Accrued finge benefits	110.1	104.2
Accrued interest	7.8	7.6
Workers' compensation	9.0	7.8
Property and sales tax	27.0	7.2
Warranty And Extraordinary Rework Reserve Current	1.4	0.6
Other	25.2	45.4
Total	216.3	200.8
Other Liabilities, Noncurrent [Abstract]
Federal income taxes, non-current	12.4	8.4
Deferred Tax Liabilities, Noncurrent	7.2	5.0
Warranty and Extraordinary Rework Reserve Noncurrent	29.5	19.0
Customer Cost Recovery	62.0	62.0
Other	17.8	21.2
Total	$ 128.9	$ 115.6