Guarantees and Contingencies - Additional Information (Detail)	1 Months Ended		12 Months Ended
	Jan. 31, 2013 USD ($)	Jan. 31, 2005 Hotel	Dec. 31, 2017 USD ($) Hotel	Dec. 31, 2016 USD ($) Hotel	Dec. 31, 2015 USD ($) Hotel	Sep. 30, 2017 USD ($) Hotel	Aug. 31, 2017 Hotel
Commitments And Contingencies Disclosure [Line Items]
Gain on insurance and business interruption settlements			$ 14,000,000	$ 15,000,000	$ 2,000,000
Aggregate contingent liabilities relating to our former restaurant business			$ 9,000,000
Number of hotels sold | Hotel			4	10	8
Future minimum lease payments			$ 1,487,000,000
Upper Limit
Commitments And Contingencies Disclosure [Line Items]
Loss contingency , estimate of possible loss			15,000,000
Upper Limit | Atlanta Marriott Marquis
Commitments And Contingencies Disclosure [Line Items]
Environmental liabilities	$ 5,000,000
Hurricane Harvey | Houston
Commitments And Contingencies Disclosure [Line Items]
Number of hotels affected | Hotel							4
Hurricane Irma | Florida | Lower Limit
Commitments And Contingencies Disclosure [Line Items]
Number of hotels closed for a period of time | Hotel						7
Hurricane Irma | Florida | Upper Limit
Commitments And Contingencies Disclosure [Line Items]
Number of hotels closed for a period of time | Hotel						9
Hurricanes Harvey And Irma
Commitments And Contingencies Disclosure [Line Items]
Loss contingency , estimate of possible loss						$ 32,000,000
Insurance receivable			18,000,000			$ 32,000,000
Property insurance proceeds			14,000,000
Gain on insurance and business interruption settlements			8,000,000
Contingent Consideration Hotel
Commitments And Contingencies Disclosure [Line Items]
Number of hotels sold | Hotel		1
Future minimum lease payments			$ 7,000,000