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Income Taxes (Narrative) (Details) (USD $) In Millions, unless otherwise specified | 9 Months Ended | 12 Months Ended |  | 9 Months Ended |
--- | --- | --- | --- | --- | ---
Sep. 30, 2012 | Sep. 30, 2011 | Dec. 31, 2011 German Tax Authority [Member] | Sep. 30, 2012 German Tax Authority [Member] | Sep. 30, 2012 German Tax Authority [Member] Minimum [Member] | Sep. 30, 2012 German Tax Authority [Member] Maximum [Member] | Sep. 30, 2012 Settlement of Tax Examination [Member] | Sep. 30, 2012 Elimination of Valuation Allowances on Certain Deferred Tax Assets [Member]
Income Taxes [Abstract] |  |  |  |  |  |  |  |
Effective tax rate on continuing operations | 35.40% | 34.60% |  |  |  |  |  |
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items] |  |  |  |  |  |  |  |
Estimated range of change, upper bound |  |  |  |  |  |  | $ 0 | $ 14.0
Estimated range of change, lower bound |  |  |  |  |  |  | (2.0) | 9.0
Unrecognized tax benefits |  |  |  | 22.4 |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |  |  |
Years under examination |  |  |  |  | 2000 | 2003 |  |
Payment to taxing authority to pursue litigation |  |  | $ 12.9 |  |  |  |  |

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- Definition A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(2)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 47 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Subparagraph 2 -Article 4 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 + Details
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