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Income Taxes (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016 USD ($) Country	Jun. 30, 2015	Jun. 30, 2016 USD ($) Country	Jun. 30, 2015	Dec. 31, 2015 USD ($)
Income Tax [Line Items]
Effective income tax rate (as percent)	37.80%	38.30%	38.60%	39.60%
U.S. Federal statutory rate (as percent)	35.00%		35.00%
Gross unrecognized tax benefits, including interest and penalties	$ 40.3		$ 40.3		$ 38.9
Offsetting tax benefits	1.0		1.0		1.0
Net unrecognized tax benefits	$ 39.3		$ 39.3		$ 37.9
Number of countries and territories in which the Company operates | Country	80		80
Minimum [Member]
Income Tax [Line Items]
Expected annual effective income tax rate (as percent)			37.00%
Maximum [Member]
Income Tax [Line Items]
Expected annual effective income tax rate (as percent)			38.00%

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Expected Annual Effective Income Tax Rate Pertaining to Continuing Operations

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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The amount of the additional liability or refund received or expected based on a final settlement with a taxing authority.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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