Reconcilation of Income Tax Rate (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Income Tax [Line Items]
Effective Income Tax Rate Reconciliation, Other Foreign Taxes, Net	0.20%	1.00%	0.10%	2.30%
Income Tax Reconciliation, Other foreign taxes, net	$ 0.1	$ 0.5	$ 0.1	$ 2.5
Amount [Abstract]
Tax provision at U.S. statutory rate	14.6	17.2	44.3	38.4
Tax benefits of foreign legal structure	0	0	(0.7)	(1.0)
Adjustments to valuation allowances	0.1	0	0.1	(0.4)
French business tax reclassified as income tax	0.6	0.5	1.7	1.8
Change in enacted foreign tax rate	0	0.3	0	0.9
Foreign income tax rate differential and other foreign taxes	(0.7)	(1.9)	(4.5)	(4.2)
Other, net	(0.9)	0.1	(1.0)	(0.4)
Provision for income taxes	$ 13.8	$ 16.7	$ 40.0	$ 37.6
Percent [Abstract]
Tax provision at U.S. statutory rate	35.00%	35.00%	35.00%	35.00%
Tax benefits of foreign legal structure	0.00%	0.00%	(0.60%)	(0.90%)
Adjustments to valuation allowances	0.20%	0.00%	0.10%	(0.40%)
French business tax reclassified as income tax	1.50%	1.00%	1.30%	1.70%
Change in enacted foreign tax rate	0.00%	0.60%	0.00%	0.80%
Foreign income tax rate differential	(1.70%)	(3.80%)	(3.50%)	(3.80%)
Other, net	(2.10%)	0.20%	(0.80%)	(0.40%)
Provision for income taxes	33.10%	34.00%	31.60%	34.30%

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Effective Income Tax Rate Reconcilation, French Business Tax Reclassified As Income Tax

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The effect on the effective income tax rate due to the tax expense (benefit) of a change in foreign legal structure.

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Effective Income Tax Rate Reconciliation, Other Foreign Taxes, Net

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Income Tax Reconciliation, French Business Tax Reclassified As Income Tax

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Income tax reconciliation, Other foreign taxes, net

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The effect on the income tax expense for the tax expense (benefit) of change in foreign legal structure.

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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.

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The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.

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The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to changes in the valuation allowance for deferred tax assets.

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The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit that is attributable to changes in the income tax laws or rates.

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The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate that can be explained by the difference between statutory income tax rates in foreign jurisdictions and the domestic federal statutory income tax rate recorded during the period.

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The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to all other items not otherwise listed in the existing taxonomy.

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The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.

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The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to changes in the valuation allowance for deferred tax assets in the period.

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The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations, that is attributable to changes in the income tax rates under enacted tax laws in the period.

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The portion of the difference, between total income tax expense or benefit as reported in the Income Statement for the period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations, that is attributable to total foreign income tax expense or benefit. The foreign income tax expense or benefit difference represents the income tax expense or benefit at applicable domestic statutory income tax rates applied to foreign earnings or loss for the period versus the foreign income tax expense or benefit calculated by applying the appropriate foreign tax rates.

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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The portion of the difference, between total income tax expense or benefit as reported in the Income Statement for the year/accounting period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations, that is attributable to all other items not otherwise listed in the existing taxonomy.

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