Commitments and Contingencies (Details) (Lines of credit, USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Lines of credit
Commitments and contingencies
Bank guarantees primarily for customer advances	$ 155.5	$ 171.2

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

No definition available.

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant