Operating Leases - Additional Information (Detail) $ in Millions	12 Months Ended
Dec. 31, 2016 USD ($) Leases	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Schedule of Operating Leases [Line Items]
Triple-net lease, capital improvement reserve rent	$ 23.9	$ 21.9	$ 23.9
Triple-net lease, total percentage rent	5.5	3.3	2.9
Total annualized property taxes	$ 5.4	$ 6.4	$ 8.6
Long-Term Triple Net Lease Agreements
Schedule of Operating Leases [Line Items]
Properties leased under long-term, triple-net leases to third-parties \| Leases	24

This element represents the rental revenue earned during the period from lessee-operators based on revenues generated in their operations, generally in excess of a base amount. Such rental revenue is generally stipulated in the lease agreement, usually will provide for a fixed percentage of revenue to be paid as additional (or possibly only) rent due the lessor, and may be based on gross revenues, net revenues, or multiple variations thereof. Percentage rent is often required under leases with retail outlets located on premises owned by hoteliers, cruise lines, others in the hospitality industry, and shopping mall operators, among others.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(e))
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Name:	us-gaap_PercentageRent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration