Commitments and Contingencies - Additional Information (Detail) $ in Millions	1 Months Ended		6 Months Ended	12 Months Ended
	Sep. 30, 2015 USD ($)	May 31, 2014 USD ($)	Jun. 30, 2016 USD ($) LegalMatter	Dec. 31, 2013 USD ($)	Dec. 31, 2009 USD ($)	Dec. 31, 2015 USD ($)
Litigation relating to occupancy tax
Commitment And Contingencies [Line Items]
Number of lawsuits filed by or against cities, counties and states involving hotel occupancy and other taxes | LegalMatter			94
Number of lawsuits currently active | LegalMatter			23
Number of lawsuits dismissed to date | LegalMatter			40
Number of dismissals based on finding that defendant was not subject to local hotel occupancy tax or the local government lacked standing to pursue claims | LegalMatter			26
Reserve for legal contingencies			$ 46.0			$ 43.0
Possible interest payments for litigation			4.0
HAWAII | Litigation Related to Other Taxes
Commitment And 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
HAWAII | Litigation Related to Other Taxes | Orbitz Worldwide, Inc.
Commitment And Contingencies [Line Items]
Tax refunds received	$ 22.0
HAWAII | Tax Year 2012 | Litigation Related to Other Taxes
Commitment And Contingencies [Line Items]
Tax assessments			26.0
HAWAII | Tax Year 2012 | Litigation Related to Other Taxes | Orbitz Worldwide, Inc.
Commitment And Contingencies [Line Items]
Tax assessments			6.0
HAWAII | 2000 through 2012 | Litigation Related to Other Taxes
Commitment And Contingencies [Line Items]
Tax assessments			39.0
HAWAII | 2000 through 2012 | Litigation Related to Other Taxes | Orbitz Worldwide, Inc.
Commitment And Contingencies [Line Items]
Tax assessments			10.0
HAWAII | 2000 through 2012 | Duplicative Assessment | Litigation Related to Other Taxes
Commitment And Contingencies [Line Items]
Tax assessments			9.3
HAWAII | Tax Year 2013 | Litigation Related to Other Taxes
Commitment And Contingencies [Line Items]
Tax assessments			34.0
HAWAII | Tax Year 2013 | Litigation Related to Other Taxes | Orbitz Worldwide, Inc.
Commitment And Contingencies [Line Items]
Tax assessments			5.0
HAWAII | 2000 through 2014 | Litigation Related to Other Taxes Agency
Commitment And Contingencies [Line Items]
Tax assessments			12.0
City of San Francisco
Commitment And Contingencies [Line Items]
Pay-to-play occupancy and other tax payments		$ 25.5			$ 48.0
City of San Francisco | Orbitz Worldwide, Inc.
Commitment And Contingencies [Line Items]
Pay-to-play occupancy and other tax payments, paid to date			$ 4.6