Ownership, Description of Business, and Summary of Significant Accounting Policies - Additional Information (Detail) - country	9 Months Ended
Sep. 30, 2015	Oct. 31, 2015
Tax Liens, Real Estate [Abstract]
Property tax liens, collections from foreclosure, percentage of properties (less than)	0.50%
Subsequent event [Member]
Subsequent Event [Line Items]
Number of countries in which Company operates		13

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

No definition available.

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