Face (par) amount of debt instrument at time of issuance.

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Amount of increase in the fair value of derivatives recognized in the income statement.

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Amount of decrease in the fair value of derivatives recognized in the income statement.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount, after tax, of cumulative translation adjustment attributable to gain (loss) on foreign currency derivatives that are designated as, and are effective as, economic hedges of a net investment in a foreign entity.

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Derivative Financial Instruments (Details) $ in Millions	12 Months Ended
Derivative Financial Instruments (Details) $ in Millions	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2016 EUR (€)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt	$ 785.9	$ 816.9
Unrealized translation gain on net investment hedge included in accumulated other comprehensive (loss) income, net of taxes	24.8	10.0
Euro-denominated notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Unrealized translation gain on net investment hedge included in accumulated other comprehensive (loss) income, net of taxes	29.0	14.1
Designated as economic hedges \| Forward contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Unrealized translation gain on net investment hedge included in accumulated other comprehensive (loss) income, net of taxes	(4.2)	(4.1)
Not designated as hedges \| Forward contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loss associated with forward contracts included in interest and other expenses	1.6
Gain associated with forward contracts included in interest and other expenses		0.6	$ 0.2
€400 due September 2022
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt	417.7	431.0
€400 due September 2022 \| Designated as economic hedges \| Euro-denominated notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Principal amount	417.7			€ 400,000,000
€350 due June 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt	367.5	$ 379.2
€350 due June 2018 \| Designated as economic hedges \| Euro-denominated notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Principal amount	$ 367.5			€ 350,000,000.0