Dispositions - Additional Information (Detail) $ in Millions		12 Months Ended
	Sep. 21, 2018 USD ($)	Dec. 31, 2019 USD ($) Hotel	Dec. 31, 2018 USD ($) Hotel	Dec. 31, 2017 USD ($) Hotel
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Number of hotels sold | Hotel		14	4	4
Gain on sale of assets		$ 339	$ 279	$ 99
Income tax provision		30	150	80
Proceeds from sales of assets, net		1,192	1,605	481
Long Term Capital Gain
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Income tax provision			$ 77
Retail
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Gain on sale of assets	$ 386
Proceeds from sales of assets, net	442
Future real estate tax rebates liability	$ 35
Australia | Hilton Melbourne South Wharf | Foreign Capital Gain
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Income tax provision				$ 17
United States | Retail | Long Term Capital Gain
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Income tax provision		$ 16