CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
OPERATING ACTIVITIES
Net income (loss)	$ 260	$ (61)	$ 378	$ (214)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operations:
Depreciation and amortization	162	169	334	334
Amortization of finance costs, discounts and premiums, net			5	5
Stock compensation expense			10	9
Other gains	(1)	(3)	(14)	(2)
Gain on property insurance settlement			(6)	0
Equity in earnings of affiliates	(2)	(25)	(4)	(34)
Change in due from/to managers			(53)	(71)
Distributions from investments in affiliates			20	4
Changes in other assets			43	(64)
Changes in other liabilities			(5)	(7)
Net cash provided by (used in) operating activities			708	(40)
INVESTING ACTIVITIES
Proceeds from sales of assets, net			217	6
Proceeds from loan receivable			0	9
Advances to and investments in affiliates			(44)	(8)
Acquisitions			0	(801)
Capital expenditures:
Renewals and replacements			(78)	(63)
Return on investment			(162)	(117)
Property insurance proceeds			7	0
Net cash used in investing activities			(60)	(974)
FINANCING ACTIVITIES
Financing costs			0	(3)
Repayment of credit facility			(683)	0
Mortgage debt and other prepayments and scheduled maturities			(1)	0
Issuance of common stock			0	138
Dividends on common stock			(21)	0
Other financing activities			(10)	(8)
Net cash provided by (used in) financing activities			(715)	127
Effects of exchange rate changes on cash held			(1)	2
NET DECREASE IN CASH AND CASH EQUIVALENTS AND RESTRICTED CASH			(68)	(885)
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH, BEGINNING OF PERIOD			953	2,476
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH, END OF PERIOD	885	1,591	885	1,591
Supplemental disclosure of cash flow information:
Cash and cash equivalents	699	1,450	699	1,450
Restricted cash (included in other assets)	7	2	7	2
Furniture, fixtures and equipment replacement fund	179	139	179	139
Total cash and cash equivalents and restricted cash shown in the statements of cash flows	885	1,591	885	1,591
Total interest paid			69	83
Income tax refunds received			(7)	0
HOST HOTELS & RESORTS L.P.
OPERATING ACTIVITIES
Net income (loss)	260	(61)	378	(214)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operations:
Depreciation and amortization	162	169	334	334
Amortization of finance costs, discounts and premiums, net			5	5
Stock compensation expense			10	9
Other gains	(1)	(3)	(14)	(2)
Gain on property insurance settlement			(6)	0
Equity in earnings of affiliates	(2)	(25)	(4)	(34)
Change in due from/to managers			(53)	(71)
Distributions from investments in affiliates			20	4
Changes in other assets			43	(64)
Changes in other liabilities			(5)	(7)
Net cash provided by (used in) operating activities			708	(40)
INVESTING ACTIVITIES
Proceeds from sales of assets, net			217	6
Proceeds from loan receivable			0	9
Advances to and investments in affiliates			(44)	(8)
Acquisitions			0	(801)
Capital expenditures:
Renewals and replacements			(78)	(63)
Return on investment			(162)	(117)
Property insurance proceeds			7	0
Net cash used in investing activities			(60)	(974)
FINANCING ACTIVITIES
Financing costs			0	(3)
Repayment of credit facility			(683)	0
Mortgage debt and other prepayments and scheduled maturities			(1)	0
Issuance of common OP units			0	138
Distributions on common OP units			(21)	0
Other financing activities			(10)	(8)
Net cash provided by (used in) financing activities			(715)	127
Effects of exchange rate changes on cash held			(1)	2
NET DECREASE IN CASH AND CASH EQUIVALENTS AND RESTRICTED CASH			(68)	(885)
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH, BEGINNING OF PERIOD			953	2,476
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH, END OF PERIOD	885	1,591	885	1,591
Supplemental disclosure of cash flow information:
Cash and cash equivalents	699	1,450	699	1,450
Restricted cash (included in other assets)	7	2	7	2
Furniture, fixtures and equipment replacement fund	179	139	179	139
Total cash and cash equivalents and restricted cash shown in the statements of cash flows	$ 885	$ 1,591	885	1,591
Total interest paid			69	83
Income tax refunds received			(7)	$ 0
Four Seasons Resort Orlando
Noncash Investing And Financing Items [Abstract]
Advanced deposits received			24
Four Seasons Resort Orlando | HOST HOTELS & RESORTS L.P.
Noncash Investing And Financing Items [Abstract]
Advanced deposits received			$ 24
Host Hotels Resorts Lp [Member] | Noble Investment Group LLC
Noncash Investing And Financing Items [Abstract]
Noncash financial or equity instrument consideration, shares issued			3.2
Joint venture investment, value of shares issued			$ 56
Host Hotels Resorts Lp [Member] | HOST HOTELS & RESORTS L.P. | Noble Investment Group LLC
Noncash Investing And Financing Items [Abstract]
Noncash financial or equity instrument consideration, shares issued			3.2
Joint venture investment, value of shares issued			$ 56
Sheraton Boston Hotel [Member]
Noncash Investing And Financing Items [Abstract]
Notes receivable from sale of property			163
Sheraton Boston Hotel [Member] | HOST HOTELS & RESORTS L.P.
Noncash Investing And Financing Items [Abstract]
Notes receivable from sale of property			163
Sheraton New York Times Square Hotel
Noncash Investing And Financing Items [Abstract]
Notes receivable from sale of property			250
Sheraton New York Times Square Hotel | HOST HOTELS & RESORTS L.P.
Noncash Investing And Financing Items [Abstract]
Notes receivable from sale of property			$ 250