Commitments and Contingencies (Letters of Credit) - Additional Information (Detail) $ in Millions	Jun. 30, 2016 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Letters of credit and bank guarantees under the credit facility	$ 317.3

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