Income Taxes textuals (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Income Tax Textuals [Abstract]
Income Tax Effects Allocated Directly to Equity, Equity Transactions	$ 1.1	$ 1.1
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	14.2
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	0.7	0.1
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	0.6	(0.6)
Income Tax Holiday, Description	We operate under a tax holiday in Malaysia effective through September 2024. During the current year, management continues to maintain a reserve for potential uncertainty in meeting the tax holiday’s conditional employment and investment thresholds. If those thresholds are met by the required date, we expect a $8.7 reduction in our unrecognized tax benefit liability.
Income Tax Holiday, Aggregate Dollar Amount	8.7
Deferred Tax Assets, Tax Credit Carryforwards, Research	5.4
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards, Expiration Dates	2025
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Valuation Allowance	14.5
Kansas High Performance Incentive Program (HPIP) Credit [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	37.2
Tax Credit Carryforward, Description	The HPIP Credit provides a 10% investment tax credit for qualified business facilities located in Kansas
Tax Credit Carryforward, Expiration Dates	$8.0 in 2025, $5.3 in 2026, $7.7 in 2027 and the remainder in 2028
Kansas Research & Development Credit (R&D) [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	11.3
Kansas Business and Jobs Development Credit [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	3.9
Kansas State Income Tax Credit [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	52.4
North Carolina Investing in Business Property Credit [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	15.5
North Carolina Investment in Real Property Credit [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	5.9
North Carolina Creating Jobs Credit [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	2.9
Tax Credit Carryforward, Description	The R&D Credit provides a credit for qualified research and development expenditures conducted within Kansas. This credit can be carried forward indefinitely
North Carolina State Income Tax Credit [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	24.3
Tax Credit Expected Utilization	9.8
Compliance Assurance Process [Member]
Income Tax Contingency [Line Items]
Income Tax Examination, Description	The CAP program’s objective is to resolve issues in a timely, contemporaneous manner and eliminate the need for a lengthy post-filing examination.
Income Tax Examination, Year(s) under Examination	2012 and 2013
United Kingdom
Income Tax Contingency [Line Items]
Income Tax Examination, Description	HM Revenue & Customs
Income Tax Examination, Year(s) under Examination	2009 and 2010
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	46.4
Operating Loss Carryforwards, Expiration Dates	indefinately
North Carolina
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	$ 12.3