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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Amount of increase in the fair value of derivatives recognized in the income statement.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
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No definition available.

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Cumulative adjustment resulting from gains and losses on foreign currency derivatives that are designated as, and are effective as, hedges of a net investment in a foreign entity, commencing as of the designation date. Adjustment reported in equity as part of accumulated other comprehensive income.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 45
-Paragraph 20
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Derivative Financial Instruments (Details) $ in Millions	12 Months Ended
Derivative Financial Instruments (Details) $ in Millions	Dec. 31, 2015 USD ($)	Dec. 31, 2015 EUR (€)	Dec. 31, 2014 USD ($)
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	$ 10.0		$ (24.5)
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	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	(4.1)
Not designated as hedges \| Forward contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Gain associated with forward contracts included in interest and other expenses	0.6
€400 due September 2022 \| Designated as economic hedges \| Euro-denominated notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Principal amount	431.0	€ 400,000,000
€350 due June 2018 \| Designated as economic hedges \| Euro-denominated notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Principal amount	$ 379.2	€ 350,000,000.0