Commitments and Contingencies - Additional Information (Detail) $ in Millions		1 Months Ended	12 Months Ended
	May 26, 2014 USD ($)	Sep. 30, 2015 USD ($)	Dec. 31, 2016 USD ($) LegalMatter	Dec. 31, 2013 USD ($)	Dec. 31, 2009 USD ($)	Dec. 31, 2015 USD ($)
Litigation relating to occupancy tax
Loss Contingencies [Line Items]
Number of lawsuits filed by cities, counties and states involving hotel occupancy taxes | LegalMatter			95
Number of lawsuits currently active | LegalMatter			20
Number of lawsuits dismissed to date | LegalMatter			40
Dismissal based in finding not subject to tax | LegalMatter			26
Reserve for legal contingencies			$ 71.0			$ 43.0
Estimate of loss			5.0
HAWAII | Litigation Related to Other Taxes
Loss Contingencies [Line Items]
Pay-to-play occupancy and other tax payments				$ 171.0
Tax refunds received		$ 132.0
Tax paid, net of refunds			44.0
Expected pay to pay occupancy and other tax payment			16.5
HAWAII | Litigation Related to Other Taxes | Orbitz Worldwide, Inc.
Loss Contingencies [Line Items]
Tax refunds received		$ 22.0
City of San Francisco
Loss Contingencies [Line Items]
Pay-to-play occupancy and other tax payments	$ 25.5				$ 48.0
City of San Francisco | Orbitz Worldwide, Inc.
Loss Contingencies [Line Items]
Payments for occupancy and other tax assessments			$ 4.6