Basis of Presentation and Accounting Policies - Payroll Tax Credit (Details) - 1 months ended Jul. 31, 2015 € in Millions, $ in Millions	USD ($)	EUR (€)
French Payroll Tax Credits
Derecognized Assets, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets [Line Items]
Proceeds from sale	$ 130.0	€ 120.1

The cash inflow associated with the sale of other receivables not otherwise defined in the taxonomy.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Name:	us-gaap_ProceedsFromSaleOfOtherReceivables
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration