Debt (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended
	Jun. 30, 2012	Feb. 28, 2011	Dec. 31, 2011	Jun. 30, 2011
Debt
Interest rate (as a percent)	6.75%			6.75%
Notes payable and current maturities of long-term liabilities	$ 19.2		$ 12.6
Long-term notes payable and capital lease obligations	280.7		238.3
Total notes payable and capital lease obligations	299.9		250.9
Working capital line of credit China
Debt
Notes payable and current maturities of long-term liabilities	9.1		4.8
Capital lease and other obligations
Debt
Notes payable and current maturities of long-term liabilities	0.1		0.3
Long-term notes payable and capital lease obligations	1.7		1.8
Term loan
Debt
Notes payable and current maturities of long-term liabilities	10.0		7.5
6.75% senior subordinated notes due 2015
Debt
Interest rate (as a percent)	6.75%	6.75%	6.75%	6.75%
Long-term notes payable and capital lease obligations			73.5
Senior subordinated notes redeemed	73.5	150.0
Call premium (as a percent)	1.125%	2.25%
Add-on to senior secured credit facility	75
Senior secured credit facility - term loan due 2015
Debt
Long-term notes payable and capital lease obligations	80.0		85.0
Senior secured credit facility - revolving loan due 2015
Debt
Long-term notes payable and capital lease obligations	$ 199.0		$ 78.0