Income Taxes (Textuals) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Taxes [Line Items]
Accrued liabilities for interest and penalties	$ 0.5	$ 0.4
Total gross unrecognized tax benefits	6.8	6.3	5.0
Unrecognized tax benefits that would Impact effective tax rate	6.6
Estimated reduction in the liability for unrecognized tax benefits	2.0
State deferred tax asset, operating loss carryforwards	15.2
Foreign deferred tax asset, operating loss carryforwards	5.9
Undistributed earnings of foreign subsidiaries	663.8
Reduction in effective tax rate for 2012 had the Act been signed prior to January 2013	1.00%
State and Local Jurisdiction [Member]
Income Taxes [Line Items]
Operating loss carryforwards	256.8
Foreign Tax Authority [Member]
Income Taxes [Line Items]
Operating loss carryforwards	24.8
Loss carryforwards not subject to expiration	13.9
Tax credit carryforwards	25.9
2014 [Member] | Foreign Tax Authority [Member]
Income Taxes [Line Items]
Tax credit carryforwards	0.4
2015 [Member] | Foreign Tax Authority [Member]
Income Taxes [Line Items]
Tax credit carryforwards	3.5
2016 [Member] | Foreign Tax Authority [Member]
Income Taxes [Line Items]
Tax credit carryforwards	1.8
2017 [Member] | Foreign Tax Authority [Member]
Income Taxes [Line Items]
Tax credit carryforwards	2.4
2018 [Member] | Foreign Tax Authority [Member]
Income Taxes [Line Items]
Tax credit carryforwards	1.9
2019 [Member] | State and Local Jurisdiction [Member]
Income Taxes [Line Items]
Tax credit carryforwards	1.6
2019 [Member] | Foreign Tax Authority [Member]
Income Taxes [Line Items]
Tax credit carryforwards	3.1
2020 [Member] | Foreign Tax Authority [Member]
Income Taxes [Line Items]
Tax credit carryforwards	3.2
2021 [Member] | Foreign Tax Authority [Member]
Income Taxes [Line Items]
Tax credit carryforwards	9.6
Research and Development [Member] | State and Local Jurisdiction [Member]
Income Taxes [Line Items]
Tax credit carryforwards	3.5
Research and Development [Member] | Internal Revenue Service (IRS) [Member]
Income Taxes [Line Items]
Tax credit carryforwards	4.5
Research and Development [Member] | 2021 [Member] | State and Local Jurisdiction [Member]
Income Taxes [Line Items]
Tax credit carryforwards	0.7
Research and Development [Member] | 2028 [Member] | Internal Revenue Service (IRS) [Member]
Income Taxes [Line Items]
Tax credit carryforwards	1.1
Research and Development [Member] | 2029 [Member] | Internal Revenue Service (IRS) [Member]
Income Taxes [Line Items]
Tax credit carryforwards	1.0
Research and Development [Member] | After 2029 [Member] | Internal Revenue Service (IRS) [Member]
Income Taxes [Line Items]
Tax credit carryforwards	2.4
Research and Development [Member] | 2022 [Member] | State and Local Jurisdiction [Member]
Income Taxes [Line Items]
Tax credit carryforwards	0.8
Research and Development [Member] | After 2022 [Member] | State and Local Jurisdiction [Member]
Income Taxes [Line Items]
Tax credit carryforwards	$ 2.0