Acquisitions, Dispositions and Assets Held for Sale - Additional Information (Detail) $ / shares in Units, shares in Millions, R$ in Millions, $ in Millions	1 Months Ended		3 Months Ended								12 Months Ended						24 Months Ended
	Nov. 30, 2019 USD ($)	May 31, 2018 USD ($)	Dec. 31, 2019 USD ($) Hotel	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($) Hotel	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2019 USD ($) Hotel shares		Dec. 31, 2018 USD ($) Hotel		Dec. 31, 2017 USD ($)		Dec. 31, 2019 USD ($) Hotel	Feb. 29, 2020 USD ($)	Feb. 29, 2020 BRL (R$)	Sep. 17, 2019 $ / shares	May 05, 2019 $ / shares
Business Acquisition [Line Items]
Acquisition costs											$ 70
Operating income			$ 148	$ 38	$ 111	$ 129	$ 97	$ 84	$ 149	$ 174	426		$ 504		$ 371
Net income			$ 123	$ 5	$ 82	$ 96	$ 54	$ 52	$ 216	$ 150	$ 306	[1]	$ 472	[1]	$ 2,625	[1]
Number of hotel portfolio properties sold | Hotel			7				12				7		12				7
Gross proceeds on sale of hotel portfolio properties											$ 436		$ 379
Net gain on selling cost of hotel portfolio properties											$ 19		98
Reclassification of currency translation adjustment from accumulated other comprehensive loss to earnings on disposition of hotel portfolio properties													$ 31
Hilton São Paolo [Member] | Scenario Forecast [Member]
Business Acquisition [Line Items]
Gross sale price of disposal																		$ 118	R$ 500
Conrad Dublin [Member]
Business Acquisition [Line Items]
Gross proceeds on sale of hotel portfolio properties	$ 128
Pro-rata share amount before customary closing adjustments	61
Net gain on sale of hotel portfolio properties	$ 44
Hilton Berlin [Member]
Business Acquisition [Line Items]
Gross proceeds on sale of hotel portfolio properties		$ 375
Pro-rata share amount before customary closing adjustments		151
Net gain on sale of hotel portfolio properties		107
Reclassification of currency translation adjustment from accumulated other comprehensive loss to earnings on disposition of hotel portfolio properties		$ 8
Chesapeake Lodging Trust [Member]
Business Acquisition [Line Items]
Percentage of ownership interest in properties											100.00%
Total consideration											$ 2,000
Business acquisition, consideration transferred number of shares issued | shares											37.8
Business acquisition,par value per common share | $ / shares																				$ 25.88	$ 0.01
Cash issued for acquisition											$ 1,013
Acquisition costs											70
Revenue recognized																	$ 156
Operating income																	20
Net income																	$ 16
Chesapeake Lodging Trust [Member] | Common Stock [member]
Business Acquisition [Line Items]
Shares issued for acquisition											$ 978

[1] Includes the derecognition and remeasurement of deferred tax assets and liabilities for the year ended December 31, 2017 of $2,347 million associated with our intent to be taxed as a REIT.