Host Hotels & Resorts (HST) 10-K 27 Feb 18 2017 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2017	Feb. 21, 2018	Jun. 30, 2017
Document And Entity Information [Line Items]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	FY
Trading Symbol	HST
Entity Registrant Name	HOST HOTELS & RESORTS, INC.
Entity Central Index Key	1,070,750
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		741,510,755
Entity Public Float			$ 13,268,185,597
HOST HOTELS & RESORTS L.P.
Document And Entity Information [Line Items]
Entity Registrant Name	HOST HOTELS & RESORTS L.P.
Entity Central Index Key	1,061,937
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		734,110,749

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions		Dec. 31, 2017	Dec. 31, 2016
ASSETS
Property and equipment, net		$ 9,692	$ 10,145
Assets held for sale		250	150
Due from managers		79	55
Advances to and investments in affiliates		327	286
Furniture, fixtures and equipment replacement fund		195	173
Other		236	225
Restricted cash		1	2
Cash and cash equivalents		913	372
Total assets		11,693	11,408
Debt
Senior notes		2,778	2,380
Credit facility, including term loans of $996 million and $997 million, respectively		1,170	1,206
Mortgage debt and other		6	63
Total debt		3,954	3,649
Accounts payable and accrued expenses		283	278
Other		287	283
Total liabilities		4,524	4,210
Partnership interests		167	165
Host Hotels & Resorts, Inc. stockholders’ equity:
Common stock, par value $.01, 1,050 million shares authorized, 739.1 million shares and 737.8 million shares issued and outstanding, respectively		7	7
Additional paid-in capital		8,097	8,077
Accumulated other comprehensive loss		(60)	(83)
Deficit		(1,071)	(1,007)
Total equity of Host Hotels & Resorts, Inc. stockholders		6,973	6,994
Non-controlling interests—other consolidated partnerships		29	39
Total equity		7,002	7,033
Total liabilities, non-controlling interests and equity		11,693	11,408
Host Hotels & Resorts, L.P. capital:
Accumulated other comprehensive loss		(60)	(83)
HOST HOTELS & RESORTS L.P.
ASSETS
Property and equipment, net		9,692	10,145
Assets held for sale		250	150
Due from managers		79	55
Advances to and investments in affiliates		327	286
Furniture, fixtures and equipment replacement fund		195	173
Other		236	225
Restricted cash		1	2
Cash and cash equivalents		913	372
Total assets		11,693	11,408
Debt
Senior notes		2,778	2,380
Credit facility, including term loans of $996 million and $997 million, respectively		1,170	1,206
Mortgage debt and other		6	63
Total debt		3,954	3,649
Accounts payable and accrued expenses		283	278
Other		287	283
Total liabilities		4,524	4,210
Partnership interests	[1]	167	165
Host Hotels & Resorts, Inc. stockholders’ equity:
Accumulated other comprehensive loss		(60)	(83)
Total liabilities, non-controlling interests and equity		11,693	11,408
Host Hotels & Resorts, L.P. capital:
General partner		1	1
Limited partner		7,032	7,076
Accumulated other comprehensive loss		(60)	(83)
Total Host Hotels & Resorts, L.P. capital		6,973	6,994
Non-controlling interests—consolidated partnerships		29	39
Total capital		$ 7,002	$ 7,033
[1]	The book value recorded is equal to the greater of the redemption value or the historical cost.

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Credit facility	$ 1,170	$ 1,206
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	1,050,000,000	1,050,000,000
Common stock, shares issued	739,100,000	737,800,000
Common stock, shares outstanding	739,100,000	737,800,000
HOST HOTELS & RESORTS L.P.
Credit facility	$ 1,170	$ 1,206
Term Loan
Credit facility	996	997
Term Loan | HOST HOTELS & RESORTS L.P.
Credit facility	$ 996	$ 997

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
REVENUES
Rooms	$ 3,490	$ 3,492	$ 3,465
Food and beverage	1,561	1,599	1,568
Other	336	339	317
Total revenues	5,387	5,430	5,350
EXPENSES
Rooms	899	893	902
Food and beverage	1,071	1,114	1,110
Other departmental and support expenses	1,273	1,306	1,295
Management fees	239	236	226
Other property-level expenses	394	382	386
Depreciation and amortization	751	724	708
Corporate and other expenses	98	106	94
Gain on insurance and business interruption settlements	(14)	(15)	(2)
Total operating costs and expenses	4,711	4,746	4,719
OPERATING PROFIT	676	684	631
Interest income	6	3	4
Interest expense	(167)	(154)	(227)	[1]
Gain on sale of assets	108	253	95
Gain (loss) on foreign currency transactions and derivatives	(2)	4	(5)
Equity in earnings of affiliates	30	21	76
INCOME BEFORE INCOME TAXES	651	811	574
Provision for income taxes	(80)	(40)	(9)
NET INCOME	571	771	565
Less: Net (income) loss attributable to non-controlling interests	(7)	(9)	(7)
NET INCOME ATTRIBUTABLE TO REPORTING ENTITY	$ 564	$ 762	$ 558
Basic earnings per common share	$ 0.76	$ 1.03	$ 0.74
Diluted earnings per common share	$ 0.76	$ 1.02	$ 0.74
HOST HOTELS & RESORTS L.P.
REVENUES
Rooms	$ 3,490	$ 3,492	$ 3,465
Food and beverage	1,561	1,599	1,568
Other	336	339	317
Total revenues	5,387	5,430	5,350
EXPENSES
Rooms	899	893	902
Food and beverage	1,071	1,114	1,110
Other departmental and support expenses	1,273	1,306	1,295
Management fees	239	236	226
Other property-level expenses	394	382	386
Depreciation and amortization	751	724	708
Corporate and other expenses	98	106	94
Gain on insurance and business interruption settlements	(14)	(15)	(2)
Total operating costs and expenses	4,711	4,746	4,719
OPERATING PROFIT	676	684	631
Interest income	6	3	4
Interest expense	(167)	(154)	(227)
Gain on sale of assets	108	253	95
Gain (loss) on foreign currency transactions and derivatives	(2)	4	(5)
Equity in earnings of affiliates	30	21	76
INCOME BEFORE INCOME TAXES	651	811	574
Provision for income taxes	(80)	(40)	(9)
NET INCOME	571	771	565
NET INCOME ATTRIBUTABLE TO REPORTING ENTITY	$ 571	$ 771	$ 565
Basic earnings per common share	$ 0.78	$ 1.05	$ 0.76
Diluted earnings per common share	$ 0.78	$ 1.05	$ 0.76
[1]	Interest expense and interest paid for 2015 includes cash prepayment premiums of approximately $30 million.

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
NET INCOME	$ 571	$ 771	$ 565
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX:
Foreign currency translation and other comprehensive income (loss) of unconsolidated affiliates	23		(71)
Change in fair value of derivative instruments	(14)	7	11
Amounts reclassified from other comprehensive income (loss)	14	17	3
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX	23	24	(57)
COMPREHENSIVE INCOME	594	795	508
Less: Comprehensive (income) loss attributable to non-controlling interests	(8)	(8)	(5)
COMPREHENSIVE INCOME ATTRIBUTABLE TO REPORTING ENTITY	586	787	503
HOST HOTELS & RESORTS L.P.
NET INCOME	571	771	565
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX:
Foreign currency translation and other comprehensive income (loss) of unconsolidated affiliates	23		(71)
Change in fair value of derivative instruments	(14)	7	11
Amounts reclassified from other comprehensive income (loss)	14	17	3
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX	23	24	(57)
COMPREHENSIVE INCOME	594	795	508
Less: Comprehensive (income) loss attributable to non-controlling interests	(1)	1	2
COMPREHENSIVE INCOME ATTRIBUTABLE TO REPORTING ENTITY	$ 593	$ 796	$ 510

CONSOLIDATED STATEMENTS OF EQUI

CONSOLIDATED STATEMENTS OF EQUITY - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings/(Deficit)	Non-controlling Interests of Other Consolidated Partnerships	Non-controlling Interests of Host Hotels & Resorts, L.P.
Balance, shares at Dec. 31, 2014		755.8
Balance at Dec. 31, 2014		$ 8	$ 8,476	$ (50)	$ (1,098)	$ 52	$ 225
NET INCOME	$ 565				558		7
Other changes in ownership			81			(10)	(78)
Foreign currency translation and other comprehensive income (loss) of unconsolidated affiliates	(71)			(71)		(2)
Change in fair value of derivative instruments	11			11
Amounts reclassified from other comprehensive income (loss)	$ 3			3
Common stock issuances (shares)		32.1
Common stock issuances			401
Comprehensive stock and employee stock purchase plans (shares)		0.6
Comprehensive stock and employee stock purchase plans			16
Common stock dividends					(599)
Redemptions of limited partner interests for common stock (shares)	0.1	0.1
Redemptions of limited partner interests for common stock	$ 3		3				(3)
Contributions from non- controlling interests of consolidated partnerships						2
Distributions to non-controlling interests						(2)	(8)
Repurchase of common stock (shares)		(38.3)
Repurchase of common stock			(675)
Balance, shares at Dec. 31, 2015		750.3
Balance at Dec. 31, 2015		$ 8	8,302	(107)	(1,139)	40	143
NET INCOME	771				762		9
Other changes in ownership			(30)				31
Foreign currency translation and other comprehensive income (loss) of unconsolidated affiliates						(1)
Change in fair value of derivative instruments	7			7
Amounts reclassified from other comprehensive income (loss)	$ 17			17
Common stock issuances (shares)		0.3
Common stock issuances			4
Comprehensive stock and employee stock purchase plans (shares)		0.4
Comprehensive stock and employee stock purchase plans			8
Common stock dividends					(630)
Redemptions of limited partner interests for common stock (shares)	0.6	0.6
Redemptions of limited partner interests for common stock	$ 10		10				(10)
Distributions to non-controlling interests							(8)
Repurchase of common stock (shares)		(13.8)
Repurchase of common stock		$ (1)	(217)
Balance, shares at Dec. 31, 2016	737.8	737.8
Balance at Dec. 31, 2016	$ 7,033	$ 7	8,077	(83)	(1,007)	39	165
NET INCOME	571				564		7
Other changes in ownership			(8)			4	8
Foreign currency translation and other comprehensive income (loss) of unconsolidated affiliates	23			23		1
Change in fair value of derivative instruments	(14)			(14)
Amounts reclassified from other comprehensive income (loss)	$ 14			14
Common stock issuances (shares)		0.5
Common stock issuances			9
Comprehensive stock and employee stock purchase plans (shares)		0.5
Comprehensive stock and employee stock purchase plans			13
Common stock dividends					(628)
Redemptions of limited partner interests for common stock (shares)	0.3	0.3
Redemptions of limited partner interests for common stock	$ 6		6				(6)
Distributions to non-controlling interests						(15)	(7)
Balance, shares at Dec. 31, 2017	739.1	739.1
Balance at Dec. 31, 2017	$ 7,002	$ 7	$ 8,097	$ (60)	$ (1,071)	$ 29	$ 167

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS $ in Millions	12 Months Ended
	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
OPERATING ACTIVITIES
NET INCOME	$ 571	$ 771	$ 565
Adjustments to reconcile net income to net cash provided by operations:
Depreciation and amortization	751	724	708
Amortization of finance costs, discounts and premiums, net	7	7	21
Non-cash loss on extinguishment of debt			11	[1]
Stock compensation expense	11	12	11
Deferred income taxes	38	27	5
Gain on sale of assets	(108)	(253)	(95)
(Gain) loss on foreign currency transactions and derivatives	2	(4)	5
Gain on property insurance settlement	(1)	(1)	(2)
Equity in earnings of affiliates	(30)	(21)	(76)
Change in due from managers	(27)	(6)	17
Distributions from investments in affiliates	40	29	27
Changes in other assets	(18)	11	19
Changes in other liabilities	(6)	6	(56)
Net cash provided by operating activities	1,230	1,302	1,160
INVESTING ACTIVITIES
Proceeds from sales of assets, net	481	465	275
Return of investments in affiliates	13	23	106
Advances to and investments in affiliates	(30)	(5)	(4)
Acquisitions	(468)	(63)	(438)
Capital expenditures:
Renewals and replacements	(205)	(293)	(383)
Return on investment	(72)	(226)	(275)
Property insurance proceeds	14		11
Net cash used in investing activities	(267)	(99)	(708)
FINANCING ACTIVITIES
Financing costs	(9)		(11)
Issuances of debt	404		898
Draws on credit facility	340	734	845
Term loan issuance			500
Repayment of credit facility	(395)	(816)	(725)
Repurchase/redemption of senior notes			(1,001)
Mortgage debt and other prepayments and scheduled maturities	(69)	(137)	(35)
Common stock repurchase		(218)	(675)
Dividends on common stock	(628)	(596)	(646)
Distributions and payments to non-controlling interests	(49)	(8)	(10)
Other financing activities	4	4	3
Net cash used in financing activities	(402)	(1,037)	(857)
Effects of exchange rate changes on cash held	4	1	(16)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS AND RESTRICTED CASH	565	167	(421)
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH, BEGINNING OF YEAR	544	377	798
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH, END OF YEAR	1,109	544	377
Supplemental disclosure of cash flow information:
Cash and cash equivalents	913	372	221
Restricted cash	1	2	15
Cash included in furniture, fixtures and equipment replacement fund	195	170	141
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH, END OF YEAR	1,109	544	377
HOST HOTELS & RESORTS L.P.
OPERATING ACTIVITIES
NET INCOME	571	771	565
Adjustments to reconcile net income to net cash provided by operations:
Depreciation and amortization	751	724	708
Amortization of finance costs, discounts and premiums, net	7	7	21
Non-cash loss on extinguishment of debt			11
Stock compensation expense	11	12	11
Deferred income taxes	38	27	5
Gain on sale of assets	(108)	(253)	(95)
(Gain) loss on foreign currency transactions and derivatives	2	(4)	5
Gain on property insurance settlement	(1)	(1)	(2)
Equity in earnings of affiliates	(30)	(21)	(76)
Change in due from managers	(27)	(6)	17
Distributions from investments in affiliates	40	29	27
Changes in other assets	(18)	11	19
Changes in other liabilities	(6)	6	(56)
Net cash provided by operating activities	1,230	1,302	1,160
INVESTING ACTIVITIES
Proceeds from sales of assets, net	481	465	275
Return of investments in affiliates	13	23	106
Advances to and investments in affiliates	(30)	(5)	(4)
Acquisitions	(468)	(63)	(438)
Capital expenditures:
Renewals and replacements	(205)	(293)	(383)
Return on investment	(72)	(226)	(275)
Property insurance proceeds	14		11
Net cash used in investing activities	(267)	(99)	(708)
FINANCING ACTIVITIES
Financing costs	(9)		(11)
Issuances of debt	404		898
Draws on credit facility	340	734	845
Term loan issuance			500
Repayment of credit facility	(395)	(816)	(725)
Repurchase/redemption of senior notes			(1,001)
Mortgage debt and other prepayments and scheduled maturities	(69)	(137)	(35)
Repurchase of common OP units		(218)	(675)
Distributions on common OP units	(635)	(603)	(654)
Distributions and payments to non-controlling interests	(42)	(1)	(2)
Other financing activities	4	4	3
Net cash used in financing activities	(402)	(1,037)	(857)
Effects of exchange rate changes on cash held	4	1	(16)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS AND RESTRICTED CASH	565	167	(421)
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH, BEGINNING OF YEAR	544	377	798
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH, END OF YEAR	1,109	544	377
Supplemental disclosure of cash flow information:
Cash and cash equivalents	913	372	221
Restricted cash	1	2	15
Cash included in furniture, fixtures and equipment replacement fund	195	170	141
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH, END OF YEAR	$ 1,109	$ 544	$ 377
[1]	Interest expense and interest paid for 2015 includes cash prepayment premiums of approximately $30 million.

CONSOLIDATED STATEMENTS OF CAPI

CONSOLIDATED STATEMENTS OF CAPITAL - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
NET INCOME	$ 571	$ 771	$ 565
Foreign currency translation and other comprehensive income (loss) of unconsolidated affiliates	23		(71)
Change in fair value of derivative instruments	(14)	7	11
Amounts reclassified from other comprehensive income (loss)	$ 14	$ 17	$ 3
Redemptions of limited partner interests for common stock (shares)	0.3	0.6	0.1
Redemptions of limited partner interests for common stock	$ 6	$ 10	$ 3
HOST HOTELS & RESORTS L.P.
Redemptions of limited partner interests for common stock (shares)	0.3	0.6	0.1
Redemptions of limited partner interests for common stock	$ 6	$ 10	$ 3
HOST HOTELS & RESORTS L.P. | Limited Partner
Beginning Balance, units	722.2	734.5	739.9
Beginning Balance	$ 7,076	$ 7,170	$ 7,385
NET INCOME	564	762	558
Other changes in ownership	$ (8)	$ (30)	$ 81
Common OP unit issuances (units)	0.5	0.2	31.4
Common OP unit issuances	$ 9	$ 4	$ 401
Units issued to Host Inc. for the comprehensive stock and employee stock purchase plans (units)	0.5	0.4	0.6
Units issued to Host Inc. for the comprehensive stock and employee stock purchase plans	$ 13	$ 8	$ 16
Distributions on common OP units	$ (628)	$ (630)	$ (599)
Redemptions of limited partner interests for common stock (shares)	0.3	0.6	0.1
Redemptions of limited partner interests for common stock	$ 6	$ 10	$ 3
Repurchase of common stock (shares)		(13.5)	(37.5)
Repurchase of common stock		$ (218)	$ (675)
Ending Balance, units	723.5	722.2	734.5
Ending Balance	$ 7,032	$ 7,076	$ 7,170
HOST HOTELS & RESORTS L.P. | General Partner
Beginning Balance	1	1	1
Ending Balance	1	1	1
HOST HOTELS & RESORTS L.P. | Accumulated Other Comprehensive Income (Loss)
Beginning Balance	(83)	(107)	(50)
Foreign currency translation and other comprehensive income (loss) of unconsolidated affiliates	23		(71)
Change in fair value of derivative instruments	(14)	7	11
Amounts reclassified from other comprehensive income (loss)	14	17	3
Ending Balance	(60)	(83)	(107)
HOST HOTELS & RESORTS L.P. | Non-controlling Interests of Other Consolidated Partnerships
Beginning Balance	39	40	52
Other changes in ownership	4		(10)
Foreign currency translation and other comprehensive income (loss) of unconsolidated affiliates	1	(1)	(2)
Contributions from non- controlling interests of consolidated partnerships			2
Distributions to non-controlling interests	(15)		(2)
Ending Balance	29	39	40
HOST HOTELS & RESORTS L.P. | Limited Partnership Interests Of Third Parties
Beginning Balance	165	143	225
NET INCOME	7	9	7
Other changes in ownership	8	31	(78)
Distributions on common OP units	(7)	(8)	(8)
Redemptions of limited partner interests for common stock	(6)	(10)	(3)
Ending Balance	$ 167	$ 165	$ 143

Supplemental Schedule of Noncas

Supplemental Schedule of Noncash Investing and Financing Activities	12 Months Ended
	Dec. 31, 2017
Supplemental Schedule of Noncash Investing and Financing Activities	Supplemental schedule of noncash investing and financing activities: During 2017, 2016 and 2015, Host Inc. issued approximately 0.3 million, 0.6 million and 0.1 million shares of common stock, respectively, upon the conversion of Host L.P. units, or OP units, held by non-controlling interests valued at $6 million, $10 million and $3 million, respectively. During 2015, holders of $399 million of our 2.5% Exchangeable Senior Debentures due 2029 elected to convert their debentures into 32 million shares of Host Inc. common stock.
HOST HOTELS & RESORTS L.P.
Supplemental Schedule of Noncash Investing and Financing Activities	Supplemental schedule of noncash investing and financing activities: During 2017, 2016 and 2015, non-controlling partners converted common operating partnership units (“OP units”) valued at $6 million, $10 million and $3 million, respectively, in exchange for 0.3 million, 0.6 million and 0.1 million shares, respectively, of Host Inc. common stock. During 2015, holders of $399 million of our 2.5% Exchangeable Senior Debentures due 2029 elected to convert their debentures into 32 million shares of Host Inc. common stock. In connection with the debentures exchanged for Host Inc. common stock, Host L.P. issued 31.3 million common OP units.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	1. Summary of Significant Accounting Policies Description of Business Host Hotels & Resorts, Inc. operates as a self-managed and self-administered real estate investment trust, or REIT, with its operations conducted solely through Host Hotels & Resorts, L.P. Host Hotels & Resorts, L.P., a Delaware limited partnership, operates through an umbrella partnership structure, with Host Hotels & Resorts, Inc., a Maryland corporation, as its sole general partner. In the notes to the consolidated financial statements, we use the terms “we” or “our” to refer to Host Hotels & Resorts, Inc. and Host Hotels & Resorts, L.P. together, unless the context indicates otherwise. We also use the term “Host Inc.” to refer specifically to Host Hotels & Resorts, Inc. and the term “Host L.P.” to refer specifically to Host Hotels & Resorts, L.P. in cases where it is important to distinguish between Host Inc. and Host L.P. Host Inc. holds approximately 99% of Host L.P.’s partnership interests, or OP units. Consolidated Portfolio As of December 31, 2017, the hotels in our consolidated portfolio are located in the following countries: Hotels United States 88 Brazil 3 Canada 2 Mexico 1 Total 94 European Joint Venture We own a non-controlling interest in a joint venture in Europe (“Euro JV”) that owns hotels in two separate funds. We own a 32.1% interest in the first fund (“Euro JV Fund I”) (3 hotels) and a 33.4% interest in the second fund (“Euro JV Fund II”) (8 hotels). As of December 31, 2017, the Euro JV hotels are located in the following countries: Hotels Belgium 1 France 3 Germany 1 Spain 2 Sweden 1 The Netherlands 2 United Kingdom 1 Total 11 Basis of Presentation and Principles of Consolidation The accompanying consolidated financial statements include the consolidated accounts of Host Inc., Host L.P. and their subsidiaries and controlled affiliates, including joint ventures and partnerships. We consolidate subsidiaries when we have the ability to control them. For the majority of our hotel and real estate investments, we consider those control rights to be (i) approval or amendment of developments plans, (ii) financing decisions, (iii) approval or amendments of operating budgets, and (iv) investment strategy decisions. We also evaluate our subsidiaries to determine if they are variable interest entities (“VIEs”). If a subsidiary is a VIE, it is subject to the consolidation framework specifically for VIEs. Typically, the entity that has the power to direct the activities that most significantly impact economic performance consolidates the VIE. We consider an entity a VIE if equity investors own an interest therein that does not have the characteristics of a controlling financial interest or if such investors do not have sufficient equity at risk for the entity to finance its activities without additional subordinated financial support. We review our subsidiaries and affiliates at least annually to determine if (i) they should be considered VIEs, and (ii) whether we should change our consolidation determination based on changes in the characteristics thereof. Three partnerships are considered VIE’s, as the general partner maintains control over the decisions that most significantly impact the partnerships. The first VIE is the operating partnership, Host L.P., which is consolidated by Host Inc., of which Host Inc. is the general partner and holds 99% of the limited partner interests. Host Inc.’s sole significant asset is its investment in Host L.P. and, consequently, substantially all of Host Inc.’s assets and liabilities represent assets and liabilities of Host L.P. All of Host Inc.’s debt is an obligation of Host L.P. and may be settled only with assets of Host L.P. The consolidated partnership that owns the Houston Airport Marriott at George Bush Intercontinental, of which we are the general partner and hold 85% of the partnership interests, also is a VIE. The total assets of this VIE at December 31, 2017 are $53 million and consist primarily of cash and property and equipment. Liabilities for the VIE total $4 million and consist of accounts payable and deferred revenue. The unconsolidated partnership that owns the Philadelphia Marriott Downtown, of which we hold 11% of the limited partner interests, also is a VIE. The carrying amount of this investment at December 31, 2017 is $(6) million and is included in advances to and investments in affiliates. The mortgage debt held by this VIE is non-recourse to us. Use of Estimates in the Preparation of Financial Statements The preparation of financial statements in conformity with U.S. generally accepted accounting principles, or GAAP, requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Cash and Cash Equivalents We consider all highly liquid investments with a maturity of three months or less at the date of purchase to be cash equivalents. Restricted Cash Restricted cash may include reserves for debt service, real estate taxes, insurance, and furniture, fixtures and equipment replacement, as well as cash collateral and excess cash flow deposits due to mortgage debt agreement restrictions and provisions, or reserves required for potential legal damages. Property and Equipment Generally, property and equipment is recorded at cost. For properties we develop, cost includes interest and real estate taxes incurred during construction. For property and equipment acquired in a business combination, we record the assets based on their fair value as of the acquisition date. Replacements and improvements and capital leases are capitalized, while repairs and maintenance are expensed as incurred. We capitalize certain inventory (such as china, glass, silver, and linen) at the time of a hotel opening or acquisition, or when significant inventory is purchased (in conjunction with a major rooms renovation or when the number of rooms or meeting space at a hotel is expanded). These amounts then are amortized over the estimated useful life of three years. Subsequent replacement purchases are expensed when placed in service. We maintain a furniture, fixtures and equipment replacement fund for renewal and replacement capital expenditures at our hotels, which generally is funded with 5% of property revenues. Impairment testing. We analyze our consolidated properties for impairment throughout the year when events or circumstances occur that indicate the carrying value may not be recoverable. We consider a property to be impaired when the sum of the future undiscounted cash flows over our remaining estimated holding period is less than the carrying value of the asset. We test for impairment in several situations, including when a property has a current or projected loss from operations, when it becomes more likely than not that a hotel will be sold before the end of its previously estimated useful life, or when other events, trends, contingencies or changes in circumstances indicate that a triggering event has occurred and the carrying value of an asset may not be recoverable. For impaired assets, we record an impairment expense equal to the excess of the carrying value of the asset over its fair value. To the extent that a property has a substantial remaining estimated useful life and management does not believe that it is more likely than not that the property will be sold prior to the end thereof, it would be unusual for undiscounted cash flows to be insufficient to recover the property’s carrying value. In the absence of other factors, we assume that the estimated useful life is equal to the remaining GAAP depreciable life because of the continuous property maintenance and improvement capital expenditures required under our management agreements. We adjust our assumptions with respect to the remaining useful life of the property if situations dictate otherwise, such as an expiring ground lease, or that it is more likely than not that the asset will be sold prior to its previously expected useful life. We also consider the effect of regular renewal and replacement capital expenditures on the estimated useful life of our properties, including critical infrastructure, which regularly is maintained and then replaced at the end of its useful life. In the evaluation of the potential impairment of our assets, we make many assumptions and estimates, including: • projected cash flows, both from operations and from the eventual sale; • the expected useful life and holding period of the asset; • the future required capital expenditures; and • fair values, including consideration of capitalization rates, discount rates and comparable selling prices, as well as available third-party appraisals. While we consider all of the above indicators as preliminary indicators to determine if the carrying value may not be recovered by undiscounted cash flows, we reviewed the actual year-to-date and the projected cash flows from operations in order to identify properties with actual or projected annual operating losses or minimal operating profit as of December 31, 2017. The projected cash flows consider items such as booking pace, occupancy, room rate and property-level operating costs. As a result of our review, we identified one property that required further consideration of property and market specific conditions or factors to determine if it was impaired. During 2017, we recognized impairment expense of $43 million on the W New York, which is included in depreciation and amortization expense. During negotiations with potential buyers, we received notice that the building commission would broadly interpret a local ordinance that would significantly restrict any potential alternative uses of the property, thus lowering its market value. In other circumstances, we use an undiscounted cash flow analysis, considering a range of RevPAR and operating margins compared to the prior years’ operating results in evaluating the probability-weighted projected cash flows from operations. To appropriately evaluate the extent to which the carrying value of the asset is recoverable, we projected cash flows at a stabilized growth rate over its remaining estimated useful life using assumptions and estimates that we believe reflect current market conditions. No impairment was recorded in 2016 and 2015. Classification of Assets as “Held for Sale”. We will classify a hotel as held for sale when the sale thereof is probable, will be completed within one year and actions to complete the sale are unlikely to change or that the sale will not occur. This policy is consistent with our experience with real estate transactions under which the timing and final terms of a sale frequently are not known until purchase agreements are executed, the buyer has a significant deposit at risk and no financing contingencies exist which could prevent the transaction from being completed in a timely manner. We typically classify assets as held for sale when all of the following conditions are met: • Host Inc.’s Board of Directors has approved the sale (to the extent that the dollar amount of the sale requires Board approval); • a binding agreement to sell the property has been signed under which the buyer has committed a significant amount of nonrefundable cash; and • no significant financing contingencies exist which could prevent the transaction from being completed in a timely manner. If these criteria are met, we will cease recording depreciation expense and will record an impairment expense if the fair value less costs to sell is less than the carrying amount of the hotel. We will classify the assets and related liabilities as held for sale on the balance sheet. Gains on sales of properties are recognized at the time of sale or are deferred and recognized as income in subsequent periods as conditions requiring deferral are satisfied or expire without further cost to us. Discontinued Operations. We generally include the operations of a hotel that was sold or a hotel that has been classified as held for sale in continuing operations, including the gain or loss on the sale, unless the sale represents a strategic shift that will have a major impact on our future operations and financial results. Asset retirement obligations. We recognize the fair value of any liability for conditional asset retirement obligations, including environmental remediation liabilities, when incurred, which generally is upon acquisition, construction, or development and/or through the normal operation of the asset, if sufficient information exists with which to reasonably estimate the fair value of the obligation. Depreciation and Amortization Expense. We depreciate our property and equipment using the straight-line method. Depreciation expense is based on the estimated useful life of our assets and amortization expense for leasehold improvements is based on the shorter of the lease term or the estimated useful life of the related assets. The useful lives of the assets are based on a number of assumptions, including cost and timing of capital expenditures to maintain and refurbish the assets, as well as specific market and economic conditions. While management believes its estimates are reasonable, a change in the estimated useful lives could affect depreciation expense and net income (loss) or the gain or loss on the sale of any of our hotels. Intangible Assets and Acquired Liabilities In conjunction with our acquisitions, we may identify intangible assets and other liabilities. These identifiable intangible assets and other liabilities typically include above and below market contracts, including ground and retail leases and management and franchise agreements, which are recorded at fair value. These contract values are based on the present value of the difference between contractual amounts to be paid pursuant to the contracts acquired and our estimate of the fair value of rates for similar contracts measured over the period equal to the remaining non-cancelable term of the contract. Intangible assets and other liabilities are amortized using the straight-line method over the remaining non-cancelable term of the related agreements. Non-Controlling Interests Other Consolidated Partnerships. As of December 31, 2017, we consolidate three majority-owned partnerships that have third-party, non-controlling ownership interests. The third-party partnership interests are included in non-controlling interest-other consolidated partnerships on the consolidated balance sheets and totaled $29 million and $39 million as of December 31, 2017 and 2016, respectively. One of the partnerships has a finite life that terminates in 2095, and the associated non-controlling interests are mandatorily redeemable at the end of, but not prior to, the finite life. Net income attributable to non-controlling interests of consolidated partnerships is included in our determination of net income. Net income attributable to non-controlling interests of third parties was immaterial for each of the years ended December 31, 2017, 2016 and 2015. Host Inc.’s treatment of the non-controlling interests of Host L.P. Host Inc. adjusts the non-controlling interests of Host L.P. each period so that the amount presented equals the greater of its carrying value based on its historical cost or its redemption value. The historical cost is based on the proportional relationship between the historical cost of equity held by our common stockholders relative to that of the unitholders of Host L.P. The redemption value is based on the amount of cash or Host Inc. common stock, at our option, that would be paid to the non-controlling interests of Host L.P. if it were terminated. We have estimated that the redemption value is equivalent to the number of shares issuable upon conversion of the OP units currently owned by unrelated third parties (one OP unit may be exchanged for 1.021494 shares of Host Inc. common stock) valued at the market price of Host Inc. common stock at the balance sheet date. Non-controlling interests of Host L.P. are classified in the mezzanine section of the balance sheet as they do not meet the requirements for equity classification because the redemption feature requires the delivery of registered shares. The table below details the historical cost and redemption values for the non-controlling interests of Host L.P.: As of December 31, 2017 2016 OP units outstanding (millions) 8.2 8.6 Market price per Host Inc. common share $ 19.85 $ 18.84 Shares issuable upon conversion of one OP unit 1.021494 1.021494 Redemption value (millions) $ 167 $ 165 Historical cost (millions) 80 84 Book value (millions) (1) 167 165 ___________ (1) Net income is allocated to the non-controlling interests of Host L.P. based on their weighted average ownership percentage during the period. Net income attributable to Host Inc. has been reduced by the amount attributable to non-controlling interests in Host L.P., which totaled $7 million, $9 million, and $7 million for 2017, 2016, and 2015, respectively. Investments in Affiliates Other-than-Temporary Impairment of an Investment. We perform an analysis on each of our equity method investments for impairment based on the occurrence of triggering events that would indicate that the carrying amount of an investment exceeds its fair value on an other-than-temporary basis. Triggering events can include a decline in distributable cash flows from the investment, a change in the expected useful life or other significant events which would decrease the value of the investment. Our investments primarily consist of joint ventures which own hotels; therefore, generally we will have few observable inputs and will determine fair value based on a discounted cash flow analysis of the investment, as well as consideration of the impact of other elements (i.e. control premiums, etc.). We use certain inputs, such as available third-party appraisals and forecast net operating income for the hotels, to estimate the expected cash flows. If an equity method investment is impaired and that impairment is determined to be other than temporary, an expense is recorded for the difference between the fair value and the carrying amount of the investment. No other-than-temporary impairment expense was recorded in 2017, 2016 and 2015. Distributions from Investments in Affiliates. We classify the distributions from our equity investments in the statements of cash flows based upon an evaluation of the specific facts and circumstances of each distribution. For example, distributions from cash generated by property operations are classified as cash flows from operating activities. However, distributions received as a result of property sales are classified as cash flows from investing activities. Income Taxes Host Inc. has elected to be treated as a REIT effective January 1, 1999, pursuant to the U.S. Internal Revenue Code of 1986, as amended. It is our intention to continue to comply with the REIT qualification requirements and to maintain our qualification for taxation as a REIT. A corporation that elects REIT status and meets certain tax law requirements regarding the distribution of its taxable income to its stockholders as prescribed by applicable tax laws and complies with certain other requirements (relating primarily to the composition of its assets and the sources of its gross income) generally is not subject to federal and state income taxation on its operating income that is distributed to its stockholders. As a partnership for federal income tax purposes, Host L.P. is not subject to federal income tax. Host L.P. is, however, subject to state, local and foreign income and franchise tax in certain jurisdictions. Additionally, each of the Host L.P. taxable REIT subsidiaries is taxable as a regular C corporation, subject to federal, state and foreign income tax. Our consolidated income tax provision or benefit includes the income tax provision or benefit related to the operations of our taxable REIT subsidiaries, and state, local, and foreign income and franchise taxes incurred by Host L.P. and its subsidiaries. Deferred Under the partnership agreement, Host L.P. generally is required to reimburse Host Inc. for any tax payments it is required to make. Accordingly, the tax information included herein represents disclosures regarding Host Inc. and its subsidiaries. Deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases, and for net operating loss, capital loss, interest expense, and tax credit carryovers. Deferred tax assets and liabilities are measured using enacted tax rates in effect for the year in which such amounts are expected to be realized or settled. The effect on deferred tax assets and liabilities from a change in tax rates is recognized in earnings in the period when the new rate is enacted. However, deferred tax assets are recognized only to the extent that it is more likely than not that they will be realized based on consideration of available evidence, including future reversals of existing taxable temporary differences, future projected taxable income and tax planning strategies. As a result of the enactment of the Tax Cuts and Jobs Act on December 22, 2017, the net deferred tax asset as at December 31, 2017 has been revalued at the new corporate income tax rate of 21% that is effective on January 1, 2018. GAAP prescribes a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken in a tax return. We must determine whether it is “more-likely-than-not” that a tax position will be sustained upon examination, including resolution of any related appeals or litigation processes, based on the technical merits of the position. Once it is determined that a position meets the more-likely-than-not recognition threshold, the position is measured at the largest amount of benefit that is greater than 50% likely of being realized upon settlement in order to determine the amount of benefit to recognize in the financial statements. This accounting standard applies to all tax positions related to income taxes. We recognize accrued interest related to unrecognized tax benefits in interest expense and penalties in operating expenses. Deferred Charges Financing costs related to long-term debt are deferred and amortized over the remaining life of the debt using the effective interest method. These costs are presented as a direct deduction from the related long-term debt on the balance sheets. Foreign Currency Translation As of December 31, 2017, our international operations consist of hotels located in Brazil, Canada and Mexico, as well as investments in the Euro JV and the Asia/Pacific JV. The financial statements of these hotels and our investments therein are maintained in their functional currency, which generally is the local currency, and their operations are translated to U.S. dollars using the average exchange rates for the period. The assets and liabilities of the hotels and the investments therein are translated to U.S. dollars using the exchange rate in effect at the balance sheet date. The resulting translation adjustments are reflected in other comprehensive income (loss). Foreign currency transactions are recorded in the functional currency for each applicable foreign entity using the exchange rates prevailing at the dates of the transactions. Assets and liabilities denominated in foreign currencies are remeasured at period end exchange rates. The resulting exchange differences are recorded in gain (loss) on foreign currency transactions and derivatives on the accompanying consolidated statements of operations, except when recorded in other comprehensive income (loss) as qualifying net investment hedges. Accumulated Other Comprehensive Income (Loss) The components of total accumulated other comprehensive income (loss) in the balance sheets are as follows (in millions): As of December 31, 2017 2016 Gain on foreign currency forward contracts $ 26 $ 40 Loss on interest rate swap cash flow hedges (5 ) (5 ) Foreign currency translation (83 ) (121 ) Other comprehensive loss attributable to non-controlling interests 2 3 Total accumulated other comprehensive loss $ (60 ) $ (83 ) During 2017, we reclassified a net loss due to foreign currency translation of $14 million that had been recognized previously in other comprehensive income (loss) due to the sale of the Hilton Melbourne South Wharf on July 28, 2017. During 2016, we reclassified a net loss due to foreign currency translation of $17 million that had been recognized previously in other comprehensive income (loss) upon the sale of two hotels in Chile and four hotels in New Zealand in 2016. The reclassified losses were recorded as a reduction to the gain on sale of these hotels. Revenues Our results of operations include revenues and expenses of our hotels. Revenues are recognized when the services are provided. Additionally, we collect sales, use, occupancy and similar taxes at our hotels, which we present on a net basis (excluded from revenues) in our statements of operations. Fair Value In evaluating the fair value of both financial and non-financial assets and liabilities, GAAP outlines a valuation framework and creates a fair value hierarchy that distinguishes between market assumptions based on market data (“observable inputs”) and a reporting entity’s own assumptions about market data (“unobservable inputs”). Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability at the measurement date in an orderly transaction (an “exit price”). Assets and liabilities are measured using inputs from three levels of the fair value hierarchy. The three levels are as follows: Level 1 — Inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that we have the ability to access at the measurement date. An active market is defined as a market in which transactions occur with sufficient frequency and volume to provide pricing on an ongoing basis. Level 2 — Inputs include quoted prices in active markets for similar assets and liabilities, quoted prices for identical or similar assets or liabilities in markets that are not active (markets with few transactions), inputs other than quoted prices that are observable for the asset or liability (i.e., interest rates, yield curves, etc.), and inputs that are derived principally from or corroborated by observable market data correlation or other means. Level 3 — Unobservable inputs reflect our assumptions about the pricing of an asset or liability when observable inputs are not available. Earnings Per Common Share (Unit) Basic earnings per common share (unit) is computed by dividing net income attributable to common stockholders (unitholders) by the weighted average number of shares of Host Inc. common stock or Host L.P. common units outstanding. Diluted earnings per common share (unit) is computed by dividing net income attributable to common stockholders (unitholders), as adjusted for potentially dilutive securities, by the weighted average number of shares of Host Inc. common stock or Host L.P. common units outstanding plus other potentially dilutive securities. Dilutive securities may include shares granted under comprehensive stock plans or the common OP units distributed to Host Inc. to support such shares granted, and other non-controlling interests that have the option to convert their limited partner interests to common OP units and convertible debt securities. No effect is shown for any securities that are anti-dilutive. The calculation of Host Inc. basic and diluted earnings per common share is shown below (in millions, except per share amounts): Year ended December 31, 2017 2016 2015 Net income $ 571 $ 771 $ 565 Less: Net income attributable to non-controlling interests (7 ) (9 ) (7 ) Net income attributable to Host Inc. $ 564 $ 762 $ 558 Basic weighted average shares outstanding 738.6 743.0 752.4 Assuming distribution of common shares granted under the comprehensive stock plans, less shares assumed purchased at market 0.5 0.7 0.5 Diluted weighted average shares outstanding (1) 739.1 743.7 752.9 Basic earnings per common share $ .76 $ 1.03 $ .74 Diluted earnings per common share $ .76 $ 1.02 $ .74 ___________ (1) There were approximately 25 million potentially dilutive shares (on a weighted average basis) for the year ended December 31, 2015 related to our exchangeable senior debentures, which were anti-dilutive for the period. The exchangeable senior debentures were redeemed in 2015 in exchange for 32 million common shares of Host Inc. The calculation of Host L.P. basic and diluted earnings per common unit is shown below (in millions, except per unit amounts): Year ended December 31, 2017 2016 2015 Net income $ 571 $ 771 $ 565 Less: Net loss attributable to non-controlling interests — — — Net income attributable to Host L.P. $ 571 $ 771 $ 565 Basic weighted average units outstanding 731.5 736.3 745.7 Assuming distribution of common units to support shares granted under the comprehensive stock plans, less shares assumed purchased at market 0.5 0.6 0.5 Diluted weighted average units outstanding (1) 732.0 736.9 746.2 Basic earnings per common unit $ .78 $ 1.05 $ .76 Diluted earnings per common unit $ .78 $ 1.05 $ .76 ___________ (1) There were approximately 25 million potentially dilutive units (on a weighted average basis) for the year ended December 31, 2015 related to our exchangeable senior debentures, which were anti-dilutive for the period. The exchangeable senior debentures were redeemed in 2015 and Host L.P. issued 31.3 million units to Host Inc. in connection with such redemption. Share-Based Payments At December 31, 2017, Host Inc. maintained two stock-based employee compensation plans. Upon the issuance of Host’s common stock under the compensation plans, Host L.P. will issue to Host Inc. common OP units of an equivalent value. These liabilities are included in the consolidated financial statements for Host Inc. and Host L.P. We recognize costs resulting from Host Inc.’s share-based payment transactions over their vesting periods. We classify share-based payment awards granted in exchange for employee services either as equity-classified awards or liability-classified awards Equity-classified awards are measured based on the fair value on the date of grant. Liability-classified awards are remeasured to fair value each reporting period. Effective January 1, 2017, we implemented a new stock-based employee compensation plan. In conjunction with the adoption of ASU No. 2016-09, the awards under the new plan are classified as equity. The plan includes awards that vest over a one-year, two-year and three-year period. For performance-based awards, compensation cost will be recognized when the achievement of the performance condition is considered probable. If a performance condition has more than one outcome that is probable, recognition of compensation cost will be based on the condition that is the most likely outcome. No compensation cost is recognized for awards for which employees do not render the requisite services. Concentrations of Credit Risk Financial instruments that potentially subject us to significant concentrations of credit risk consist principally of cash and cash equivalents. We are exposed to credit risk with respect to cash held at various financial institutions, access to our credit facility, and amounts due or payable under our derivative contracts. As of December 31, 2017, we do not have any credit risk exposure related to our derivative instruments. At December 31, 2016, our exposure to risk related to our derivative instruments totaled $12 million. The counterparties to such instruments are investment grade financial institutions. Our credit risk exposure with regard to our cash and the available capacity under the revolver portion of our credit facility is spread among a diversified group of investment grade financial institutions. Business Combinations We recognize identifiable assets acquired, liabilities assumed, and non-controlling interests in a business combination at their fair values at the acquisition date based on the exit price (i.e. the price that would be received to sell an asset or paid to transfer a liability

Property and Equipment

Property and Equipment	12 Months Ended
	Dec. 31, 2017
Property Plant And Equipment [Abstract]
Property and Equipment	2. Property and Equipment Property and equipment consists of the following (in millions): As of December 31, 2017 2016 Land and land improvements $ 1,934 $ 2,047 Buildings and leasehold improvements 13,529 13,483 Furniture and equipment 2,357 2,377 Construction in progress 106 86 17,926 17,993 Less accumulated depreciation and amortization (8,234 ) (7,848 ) $ 9,692 $ 10,145 The aggregate cost of real estate for federal income tax purposes is approximately $10.7 billion at December 31, 2017.

Investments in Affiliates

Investments in Affiliates	12 Months Ended
	Dec. 31, 2017
Investments In And Advances To Affiliates Schedule Of Investments [Abstract]
Investments in Affiliates	3. Investments in Affiliates We own investments in joint ventures for which the equity method of accounting is used. The debt of our joint ventures is non-recourse to, and not guaranteed by, us, and a default of such debt does not trigger a default under any of our debt instruments. Investments in affiliates consist of the following (in millions): As of December 31, 2017 Ownership Interests Our Investment Our Portion of Debt Total Debt Distributions received in 2017 (1) Assets Euro JV (2) 32.1 - 33.4% $ 271 $ 316 $ 1,029 $ 31 Eleven hotels in Europe Asia/Pacific JV 25 % 15 — — — A 36% interest in seven hotels in India Maui JV 67 % 83 27 41 7 131-unit vacation ownership project in Maui, HI Hyatt Place JV 50 % (13 ) 30 60 3 One hotel in Nashville, TN Harbor Beach JV 49.9 % (28 ) 75 149 7 One hotel in Fort Lauderdale, FL Philadelphia Marriott Downtown JV 11 % (6 ) 24 217 1 One hotel in Philadelphia, PA Fifth Wall Ventures 5 — — — Real estate industry technology investment Total $ 327 $ 472 $ 1,496 $ 49 As of December 31, 2016 Ownership Interests Our Investment Our Portion of Debt Total Debt Distributions received in 2016 (1) Assets Euro JV 32.1 - 33.4% $ 227 $ 236 $ 744 $ 18 Ten hotels in Europe Asia/Pacific JV (3) 25 % 17 — — 9 A 36% interest in five operating hotels and two hotels in final stages of completion in India Maui JV 67 % 81 27 41 — 131-unit vacation ownership project in Maui, HI Hyatt Place JV (4) 50 % (12 ) 30 60 17 One hotel in Nashville, TN Harbor Beach JV 49.9 % (24 ) 75 149 6 One hotel in Fort Lauderdale, FL Philadelphia Marriott Downtown JV 11 % (6 ) 24 221 2 One hotel in Philadelphia, PA Fifth Wall Ventures 3 — — — Real estate industry technology investment Total $ 286 $ 392 $ 1,215 $ 52 ___________ (1) Distributions received were funded by cash from operations unless otherwise noted. (2) Distributions received from Euro JV in 2017 include $9 million of loan refinancing proceeds. (3) Distributions received from the Asia/Pacific JV in 2016 were primarily related to the sale of the Four Points by Sheraton Perth in 2015. (4) Distributions received from the Hyatt Place JV in 2016 include $14 million of loan refinancing proceeds. European Joint Venture We own general and limited partner interests in the Euro JV that consists of two separate funds, with the other partners being APG Strategic Real Estate Pool NV, an affiliate of a Dutch Pension Fund, and Jasmine Hotels Pte Ltd, an affiliate of the real estate investment company of the Government of Singapore Investment Corporation Pte Ltd (“GIC RE”). We own a combined 32.1% interest of Euro JV Fund I and a combined 33.4% interest of Euro JV Fund II. We do not consolidate the Euro JV due to the structure and substantive participating rights of the non-Host limited partners, including approval over financing, acquisitions and dispositions, and annual operating and capital expenditures budgets. The joint venture agreement expires in June 2021, subject to two one-year extensions. As of December 31, 2017, the total assets of the Euro JV are approximately €1.7 billion. As asset manager of the Euro JV funds, we earn asset management fees based on the amount of equity invested, which in 2017, 2016 and 2015 aggregated approximately $8 million, $8 million and $11 million, respectively. The commitment period of both funds has expired with the remaining equity commitment limited in its use to capital expenditures and financing needs. During 2017, the Euro JV acquired the 433-room Hilton Amsterdam Airport Schiphol in Amsterdam for €148 million. In connection with the acquisition, the partnership entered into an €81.4 million mortgage loan which matures on December 13, 2022, and funded the remaining portion with partner contributions, of which Host’s share was €23 million ($27 million). Asia/Pacific Joint Venture We own a 25% general and limited partner interest in the Asia/Pacific JV, the other partner of which is RECO Hotels JV Private Limited, an affiliate of GIC RE. The Asia/Pacific JV may be terminated by the partners at any time. Due to the ownership structure and the substantive participating rights of the non-Host limited partner, including approval over financing, acquisitions and dispositions, and annual operating and capital expenditures budgets, the Asia/Pacific JV is not consolidated in our financial statements. The commitment period for the equity contributions to the joint venture has expired. Certain funding commitments remain, however, related to its existing investment in India. As of December 31, 2017, the Asia/Pacific JV partners have invested approximately $104 million (of which our share was $26 million) in a joint venture in India with Accor S.A. and InterGlobe Enterprises Limited, in which the Asia/Pacific JV holds a 36% interest. On November 12, 2017, the joint venture opened the Novotel & ibis Chennai OMR. Maui Joint Venture We have a 67% non-controlling interest in a joint venture that owns a 131-unit vacation ownership development in Maui, Hawaii adjacent to our Hyatt Regency Maui Resort & Spa (the “Maui JV”). The project opened in December 2014. During 2017, the Maui JV repaid its outstanding construction loan, releasing us of our guarantees. Additionally, the joint venture has $41 million of outstanding debt used to facilitate the sales of the vacation ownership units, which is not guaranteed by us. Hyatt Place Joint Venture We own a 50% interest in a joint venture with White Lodging Services that owns the 255-room Hyatt Place Nashville Downtown in Tennessee. The Hyatt Place joint venture has an outstanding $60 million mortgage loan due August 2019, with two 12-month extension options. The loan bears interest at 1-month USD LIBOR plus 300 basis points, or 4.6%, at December 31, 2017. Harbor Beach Joint Venture We have a non-controlling 49.9% interest in a joint venture with R/V-C Association that owns the 650-room Fort Lauderdale Marriott Harbor Beach Resort & Spa in Florida. The joint venture has a $149 million mortgage loan with a maturity date of January 1, 2024. The loan bears interest at 4.75%. Only monthly interest payments are being made on the loan. No principal payments are due until the loan maturity date of January 1, 2024. Combined Financial Information of Unconsolidated Investees Combined summarized balance sheet information for our affiliates is as follows (in millions): As of December 31, 2017 2016 Property and equipment, net $ 1,945 $ 1,634 Timeshare inventory 117 137 Other assets 566 514 Total assets $ 2,628 $ 2,285 Debt $ 1,496 $ 1,215 Other liabilities 330 319 Equity 802 751 Total liabilities and equity $ 2,628 $ 2,285 Combined summarized operating results for our affiliates is as follows (in millions): Year ended December 31, 2017 2016 2015 Total revenues $ 621 $ 599 $ 769 Operating expenses Expenses (436 ) (437 ) (558 ) Depreciation and amortization (78 ) (73 ) (84 ) Operating profit 107 89 127 Interest income 6 5 3 Interest expense (56 ) (57 ) (80 ) Other gain (loss) 4 (2 ) 141 Net income $ 61 $ 35 $ 191

Debt

Debt	12 Months Ended
	Dec. 31, 2017
Debt Disclosure [Abstract]
Debt	4. Debt Debt consists of the following (in millions): As of December 31, 2017 2016 Series Z senior notes, with a rate of 6% due October 2021 $ 298 $ 297 Series B senior notes, with a rate of 5¼% due March 2022 348 347 Series C senior notes, with a rate of 4¾% due March 2023 447 446 Series D senior notes, with a rate of 3¾% due October 2023 398 398 Series E senior notes, with a rate of 4% due June 2025 496 496 Series F senior notes, with a rate of 4½% due February 2026 396 396 Series G senior notes, with a rate of 3⅞% due April 2024 395 — Total senior notes 2,778 2,380 Credit facility revolver 174 209 2017 Credit facility term loan due May 2021 498 500 2015 Credit facility term loan due September 2020 498 497 Mortgage debt (non-recourse) and other, with an average interest rate of 8.8% and 3.4% at December 31, 2017 and 2016, respectively, maturing through February 2024 6 63 Total debt $ 3,954 $ 3,649 Senior Notes General. Under the terms of our senior notes indenture, our senior notes are equal in right of payment with all of our unsubordinated indebtedness and senior to all our subordinated obligations. The face amount of our senior notes as of December 31, 2017 and 2016 was $2.8 billion and $2.4 billion, respectively. The senior notes balances as of December 31, 2017 and 2016 are net of unamortized discounts and deferred financing costs of approximately $22 million and $20 million, respectively. We pay interest on each series of our senior notes semi-annually in arrears at the respective annual rates indicated in the table above. Under the terms of the senior notes indenture, our ability to incur indebtedness and pay dividends is subject to restrictions and the satisfaction of various conditions. As of December 31, 2017, we are in compliance with all of these covenants. On March 20, 2017, we issued $400 million of 3.875% Series G senior notes due April 2024 for proceeds of approximately $395 million, net of discounts, underwriting fees and expenses. Interest is payable semi-annually in arrears on May 15 and November 15, commencing November 15, 2017. The net proceeds were used to repay $250 million that had been drawn under the revolver portion of our credit facility and for general corporate purposes. Authorization for Repurchase of Senior Notes. In February 2018, Host Inc.’s Board of Directors authorized repurchases of up to $250 million of senior notes and mortgage debt (other than in accordance with their terms). Credit Facility. On May 31, 2017 we entered into the fourth amended and restated senior revolving credit facility with Bank of America, N.A., as administrative agent, JPMorgan Chase Bank, N.A., as syndication agent, and certain other agents and lenders. The credit facility allows for revolving borrowings in an aggregate principal amount of up to $1 billion, including a foreign currency subfacility for Canadian dollars, Australian dollars, Euros, British pound sterling and, if available to the lenders, Mexican pesos, of up to the foreign currency equivalent of $500 million, subject to a lower amount in the case of Mexican peso borrowings. The credit facility also provides for the existing term loan facility of $1 billion (which is fully utilized), a subfacility of up to $100 million for swingline borrowings in U.S. dollars, Canadian dollars, Euros and British pound sterling and a subfacility of up to $100 million for issuances of letters of credit. Host L.P. also has the option to increase the aggregate principal amount of the credit facility by up to $500 million, subject to obtaining additional loan commitments and satisfaction of certain conditions. The revolving credit facility has an initial scheduled maturity of May 2021, with the option for Host L.P. to extend the term for two additional six-month terms, subject to certain conditions, including the payment of an extension fee and the accuracy of representations and warranties, and $500 million of term loans (“2017 Term Loan”) have an initial scheduled maturity of May 2021, with an option for Host L.P. to extend the term for one additional year, subject to similar conditions. We pay interest on revolver borrowings under the credit facility at floating rates equal to LIBOR plus a margin ranging from 82.5 to 155 basis points (depending on Host L.P.’s unsecured long-term debt rating). We also pay a facility fee ranging from 12.5 to 30 basis points, depending on our rating and regardless of usage. Based on Host L.P.’s unsecured long-term debt rating as of December 31, 2017, we are able to borrow at a rate of LIBOR plus 100 basis points and pay a facility fee of 20 basis points. On September 10, 2015, we closed on a $500 million term loan (“2015 Term Loan”) by exercising the accordion feature of our existing credit facility. On that same day, we drew $300 million on the 2015 Term Loan and drew the remaining $200 million on December 29, 2015. The proceeds were used to repay outstanding amounts on the revolver. The loan has a five-year maturity and its interest rate spread depends on our unsecured debt rating. Based on our unsecured debt rating at December 31, 2017, both the 2017 Term Loan and 2015 Term Loan have a floating interest rate of LIBOR plus 110 bps (or approximately a 2.7% all-in interest rate). Net repayments under the credit facility were $55 million in 2017, while in 2016 we made net repayments of $82 million. As of December 31, 2017, we have $822 million of available capacity under the revolver portion of our credit facility. Financial Covenants . The credit facility contains covenants concerning allowable leverage, fixed charge coverage and unsecured interest coverage (as defined in our credit facility). Currently, we are permitted to borrow and maintain amounts outstanding under the credit facility so long as our leverage ratio is not in excess of 7.25x, our unsecured coverage ratio is not less than 1.75x and our fixed charge coverage ratio is not less than 1.25x. The financial covenants for the credit facility do not apply when there are no borrowings thereunder. Therefore, so long as there are no amounts outstanding, we would not be in default if we do not satisfy the financial covenants and we do not lose the potential to draw under the credit facility in the future if we were to regain compliance with the financial covenants. These calculations are performed based on pro forma results for the prior four fiscal quarters, giving effect to transactions such as acquisitions, dispositions and financings as if they had occurred at the beginning of the period. Under the terms of the credit facility, interest expense excludes items such as gains and losses on the extinguishment of debt, deferred financing costs related to the senior notes or the credit facility, amortization of debt premiums or discounts that were recorded at issuance of a loan in order to establish the debt at fair value and non-cash interest expense due to the implementation in 2009 of accounting standards related to our exchangeable debentures, all of which are or have been included in interest expense on our consolidated statements of operations. Additionally, total debt used in the calculation of our leverage ratio is based on a “net debt” concept, under which cash and cash equivalents in excess of $100 million are deducted from our total debt balance. As of December 31, 2017, we are in compliance with the financial covenants under our credit facility. Guarantees . The credit facility requires all Host L.P. subsidiaries which guaranty Host L.P. debt to similarly guarantee obligations under the credit facility but otherwise removed the requirement under the prior agreement that guarantees and pledges are required in the event that Host L.P.’s leverage ratio exceeds 6.0x for two consecutive fiscal quarters at a time that Host L.P. does not have an investment grade long-term unsecured debt rating. Other Covenants and Events of Default . The credit facility contains restrictive covenants on customary matters. Certain covenants are less restrictive at any time that our leverage ratio is below 6.0x. In particular, at any time that our leverage ratio is below 6.0x, we will not be subject to limitations on capital expenditures, and the limitations on acquisitions, investments and dividends contained in the credit facility will be superseded by the generally less restrictive corresponding covenants in our senior notes indenture. Additionally, the credit facility’s restrictions on the incurrence of debt and the payment of dividends generally are consistent with our senior notes indenture for our Series D senior notes. These provisions, under certain circumstances, limit debt incurrence to debt incurred under the credit facility or in connection with a refinancing, and limit dividend payments to those necessary to maintain Host Inc.’s tax status as a REIT. Our senior notes and credit facility have cross default provisions that would trigger a default under those agreements if we were to have a payment default or an acceleration prior to maturity of other debt of Host L.P. or its subsidiaries. The amount of other debt in default needs to exceed certain thresholds in order to trigger a cross default and the thresholds are greater for secured debt than for unsecured debt. The credit facility also includes usual and customary events of default for facilities of this nature, and provides that, upon the occurrence and continuance of an event of default, payment of all amounts owed under the credit facility may be accelerated, and the lenders’ commitments may be terminated. In addition, upon the occurrence of certain insolvency or bankruptcy related events of default, all amounts owed under the credit facility will become due and payable and the lenders’ commitments will terminate. Mortgage Debt All of our mortgage debt is recourse solely to specific assets, except for environmental liabilities, fraud, misapplication of funds and other customary recourse provisions. As of December 31, 2017, we have no assets that are encumbered by mortgage debt. We have made the following mortgage debt repayments since January 2016: Maturity Transaction Date Property Rate Date Amount Repayments July 2017 Hilton Melbourne South Wharf 3.3 % 11/22/2017 $ (69 ) September 2016 Novotel and ibis Christchurch 3.6 % 2/18/2018 (17 ) April 2016 Hyatt Regency Reston 3.5 % 7/1/2016 (100 ) March 2016 ibis Wellington 3.7 % 2/18/2018 (11 ) February 2016 Novotel Wellington 5.7 % 2/18/2018 (9 ) Aggregate Debt Maturities Aggregate debt maturities are as follows (in millions): As of December 31, 2017 2018 $ — 2019 — 2020 500 2021 978 2022 350 Thereafter 2,155 3,983 Deferred financing costs (27 ) Unamortized (discounts) premiums, net (3 ) Capital lease obligations 1 $ 3,954 Interest The following items are included in interest expense (in millions): Year ended December 31, 2017 2016 2015 (1) Interest expense $ 167 $ 154 $ 227 Amortization of debt premiums/discounts, net (2) (1 ) (1 ) (13 ) Amortization of deferred financing costs (6 ) (6 ) (8 ) Non-cash losses on debt extinguishments — — (11 ) Change in accrued interest (2 ) (3 ) 12 Interest paid (3) $ 158 $ 144 $ 207 ___________ (1) Interest expense and interest paid for 2015 includes cash prepayment premiums of approximately $30 million. (2) For 2015, this primarily represents the amortization of the debt discount on exchangeable senior debentures, which is considered non-cash interest expense. (3) Does not include capitalized interest of $1 million, $3 million and $5 million for 2017, 2016 and 2015, respectively. Our debt repayments resulted in debt extinguishment costs included in interest expense for 2017 and 2015 of $1 million and $41 million, respectively. No debt extinguishment costs were incurred in 2016.

Equity of Host Inc. and Capital

Equity of Host Inc. and Capital of Host L.P.	12 Months Ended
	Dec. 31, 2017
Equity [Abstract]
Equity of Host Inc. and Capital of Host L.P.	5. Equity of Host Inc. and Capital of Host L.P. Equity of Host Inc. Host Inc. has authorized 1,050 million shares of common stock, with a par value of $0.01 per share, of which 739.1 million and 737.8 million were outstanding as of December 31, 2017 and 2016, respectively. Fifty million shares of no par value preferred stock are authorized; none of such preferred shares was outstanding as of December 31, 2017 and 2016. Capital of Host L.P. As of December 31, 2017, Host Inc. is the owner of approximately 99% of Host L.P.’s common OP units. The remaining 1% of Host L.P.’s common OP units are held by various unaffiliated limited partners. Each common OP unit may be redeemed for cash or, at the election of Host Inc., Host Inc. common stock, based on the conversion ratio of 1.021494 shares of Host Inc. common stock for each OP unit. In connection with the issuance of shares by Host Inc., Host L.P. will issue OP units based on the same conversion ratio. As of December 31, 2017 and 2016, Host L.P. had 731.7 million and 730.8 million OP units outstanding, respectively, of which Host Inc. held 723.5 million and 722.2 million, respectively. Repurchases and Issuances of Common Stock and Common OP Units During 2016, we repurchased 13.8 million shares at an average price of $15.79 for a total purchase price of approximately $218 million. The shares repurchased constitute authorized but unissued shares. On December 31, 2016, the purchasing authority under the program had expired. On February 21, 2017, the Board of Directors authorized a new program to repurchase up to $500 million of common stock . Dividends/Distributions Host Inc. is required to distribute at least 90% of its annual taxable income, excluding net capital gains, to its stockholders in order to maintain its qualification as a REIT, including taxable income recognized for federal income tax purposes but with regard to which we do not receive cash. Funds used by Host Inc. to pay dividends on its common stock are provided by distributions from Host L.P. The amount of any future dividends will be determined by Host Inc.’s Board of Directors. The dividends that were taxable to our stockholders in 2017 were considered 88% ordinary income (non-qualified dividend income), 1% qualified dividend income, 8% capital gain distribution and 3% unrecaptured Section 1250 gain. The dividends that were taxable to our stockholders in 2016 were considered 66% ordinary income (non-qualified dividend income), 4% qualified dividend income, 24% capital gain distribution and 6% unrecaptured Section 1250 gain. The table below presents the amount of common dividends declared per share and common distributions per unit as follows: Year ended December 31, 2017 2016 2015 Common stock $ .85 $ .85 $ .80 Common OP units .868 .868 .817 On February 21, 2018, Host Inc.’s Board of Directors authorized a regular quarterly cash dividend of $0.20 per share on Host Inc.’s common stock. The dividend is payable on April 16, 2018, to stockholders of record on March 29, 2018.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Income Taxes	6. Income Taxes We elected to be taxed as a REIT under Sections 856 through 860 of the Internal Revenue Code commencing with our taxable year beginning January 1, 1999. To qualify as a REIT, we must meet a number of organizational and operational requirements, including a requirement that we distribute at least 90% of our taxable income to our stockholders, excluding net capital gain. As a REIT, generally we will not be subject to federal and state corporate income tax on that portion of our taxable income that currently is distributed to our stockholders. If we fail to qualify for taxation as a REIT in any taxable year, we will be subject to federal and state corporate income taxes at regular corporate rates (including any applicable corporate alternative minimum tax, which was repealed effective January 1, 2018) and may not be able to qualify as a REIT for four subsequent taxable years. Even if we qualify for taxation as a REIT, we may be subject to certain state, local and foreign taxes on our income and property, and to federal and state income and excise taxes on our undistributed taxable income. H. R. 1 (Tax Cuts and Jobs Act) was enacted on December 22, 2017. Accordingly, the domestic deferred tax assets have been remeasured using a U.S. federal income tax rate of 21% that is effective beginning with calendar year 2018. The impact of this remeasurement is a decrease to the domestic deferred tax assets and an increase to the deferred income tax provision in 2017 of approximately $11 million. We have recorded a 100% valuation allowance of approximately $27 million against the deferred tax asset related to the net operating loss carryovers as of December 31, 2017 with respect to our hotel in Mexico. During 2016, we reversed the $3 million valuation allowance previously recorded against the deferred tax asset related to the net operating loss carryovers of our hotels in Canada. The net increase in valuation allowance for the year ending December 31, 2017 is approximately $5 million. The net decrease in valuation allowance for the year ending December 31, 2016 is approximately $1 million. The primary components of our net deferred tax assets are as follows (in millions): As of December 31, 2017 2016 Deferred tax assets Net operating loss and capital loss carryovers $ 34 $ 43 Alternative minimum tax and investment tax credits — 8 Property and equipment 3 4 Investments in domestic affiliates — 2 Deferred revenue and expenses 27 42 Foreign exchange net losses (AOCI) 12 12 Other — 2 Total gross deferred tax assets 76 113 Less: Valuation allowance (27 ) (22 ) Total deferred tax assets, net of valuation allowance $ 49 $ 91 Deferred tax liabilities Property and equipment — (11 ) Investments in domestic and foreign affiliates (8 ) (7 ) Other — (2 ) Total gross deferred tax liabilities (8 ) (20 ) Net deferred tax assets $ 41 $ 71 At December 31, 2017, we have aggregate gross foreign net operating loss and capital loss carryovers of approximately $116 million. We have deferred tax assets related to these foreign loss carryovers of approximately $34 million, with a valuation allowance of approximately $27 million. Our foreign net operating loss carryovers expire through 2037, and our foreign capital loss carryovers have no expiration period. We believe that it is more likely than not that the results of future operations will generate sufficient taxable income in order to realize our total deferred tax assets, net of a valuation allowance of $27 million, of $49 million. Our U.S. and foreign income from continuing operations before income taxes was as follows (in millions): Year ended December 31, 2017 2016 2015 U.S. income $ 593 $ 763 $ 530 Foreign income 58 48 44 Total $ 651 $ 811 $ 574 The provision for income taxes from continuing operations consists of (in millions): Year ended December 31, 2017 2016 2015 Current —Federal $ 17 $ — $ 2 —State 6 1 (1 ) —Foreign 19 12 3 42 13 4 Deferred —Federal 32 24 2 —State 4 6 — —Foreign 2 (3 ) 3 38 27 5 Income tax provision – continuing operations $ 80 $ 40 $ 9 The differences between the income tax provision calculated at the statutory U.S. federal income tax rate of 35% (21% beginning with calendar year 2018) and the actual income tax provision recorded for continuing operations are as follows (in millions): Year ended December 31, 2017 2016 2015 Statutory federal income tax provision $ 228 $ 284 $ 204 Adjustment for nontaxable income of Host Inc. (190 ) (260 ) (203 ) State income tax provision, net 10 7 1 Provision for uncertain tax positions — — 1 Remeasurement of domestic net deferred tax assets 11 — — Foreign income tax provision 21 9 6 Income tax provision $ 80 $ 40 $ 9 Cash paid for income taxes, net of refunds received, was $40 million, $15 million, and $9 million in 2017, 2016, and 2015, respectively. A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in millions): 2017 2016 Balance at January 1 $ 11 $ 11 Balance at December 31 $ 11 $ 11 All of such uncertain tax position amounts, if recognized, would impact our reconciliation between the income tax provision calculated at the statutory U.S. federal income tax rate of 35% (21% beginning with calendar year 2018) and the actual income tax provision recorded each year. As of December 31, 2017, the tax years that remain subject to examination by major tax jurisdictions generally include 2014-2017. There were no material interest or penalties recorded for the years ended December 31, 2017, 2016, and 2015.

Leases

Leases	12 Months Ended
	Dec. 31, 2017
Leases [Abstract]
Leases	7. Leases Taxable REIT Subsidiaries Leases We lease substantially all of our hotels to a wholly owned subsidiary that qualifies as a taxable REIT subsidiary due to federal income tax restrictions on a REIT’s ability to derive revenue directly from the operation and management of a hotel. Ground Leases As of December 31, 2017, all or a portion of 26 of our hotels are subject to ground leases, generally with multiple renewal options, all of which are accounted for as operating leases. For lease agreements with scheduled rent increases, we recognize the lease expense ratably over the term of the lease. Certain of these leases contain provisions for the payment of contingent rentals based on a percentage of sales in excess of stipulated amounts. Other Lease Information We also have leases on facilities used in our former restaurant business, all of which we subsequently subleased. These leases and subleases contain one or more renewal options, generally for five- or ten-year periods. The restaurant leases are accounted for as operating leases. Our contingent liability related to these leases is $9 million as of December 31, 2017. We, however, consider the likelihood of any material funding related to these leases to be remote. Our leasing activity also includes those entered into by our hotels for various types of equipment, such as computer equipment, vehicles and telephone systems. Equipment leases are accounted for either as operating or capital leases, depending upon the characteristics of the particular lease arrangement. Equipment leases that are characterized as capital leases are classified as furniture and equipment and are depreciated over the life of the lease. The amortization expense applicable to capitalized leases is included in depreciation expense. The following table presents the future minimum annual rental commitments required under non-cancelable operating leases for which we are the lessee (in millions): As of December 31, 2017 2018 $ 42 2019 41 2020 39 2021 39 2022 37 Thereafter 1,289 Total minimum lease payments $ 1,487 Minimum payments for the operating leases have not been reduced by aggregate minimum sublease rentals from restaurants of approximately $6 million that are payable to us under non-cancelable subleases. Rent expense is included in other property-level expenses and consists of (in millions): Year ended December 31, 2017 2016 2015 Minimum rentals on operating leases $ 46 $ 45 $ 46 Additional rentals based on sales 38 38 33 Less: sublease rentals (1 ) (2 ) (2 ) $ 83 $ 81 $ 77

Employee Stock Plans

Employee Stock Plans	12 Months Ended
	Dec. 31, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Employee Stock Plans	8. Employee Stock Plans Upon the issuance of Host Inc.’s common stock under either of the two stock-based compensation plans described below, Host L.P. will issue to Host Inc. common OP units of an equivalent value. Accordingly, these awards and related disclosures are included in both Host Inc.’s and Host L.P.’s consolidated financial statements. Host Inc. maintains two stock-based compensation plans, the Comprehensive Stock and Cash Incentive Plan (the “2009 Comprehensive Plan”), under which Host Inc. may award to participating employees restricted stock units (“RSUs”), and the Employee Stock Purchase Plan (“ESPP”). At December 31, 2017, there were approximately 14 million shares of Host Inc.’s common stock reserved and available for issuance under the 2009 Comprehensive Plan. We recognize costs resulting from share-based payments in our financial statements over their vesting periods. No compensation cost is recognized for awards for which employees do not render the requisite services. We classify share-based payment awards granted in exchange for employee services as either equity-classified or liability-classified awards. Equity-classified awards are measured based on their fair value as of the date of grant. In contrast, liability-classified awards are re-measured to fair value each reporting period. During 2017, 2016 and 2015, we recorded stock-based compensation expense of approximately $11 million, $12 million and $11 million, respectively. Shares granted in 2017, 2016 and 2015 totaled 1.5 million, 2.3 million and 1.8 million, respectively, while 0.6 million, 1.2 million and 0.8 million shares, respectively, vested during those years. Senior Executive Plan During 2017, Host Inc. granted 1.4 million RSU awards under the 2009 Comprehensive Plan, which amount represents the maximum number of RSUs that can be earned during the period of 2017 through 2019 if performance is at the “high” level of achievement and, for time based awards, the executive remains employed. The RSUs vest over a one, two or three-year period and 0.7 million RSUs were unvested at December 31, 2017. Total unrecognized compensation cost related to unvested RSU awards that vest through 2019 is approximately $8 million. Prior to 2017, all restricted stock awards were fully vested. RSU awards Vesting of RSUs is based on (1) continued employment on the vesting date (“Time-Based Award”); (2) the achievement of relative total shareholder return (“TSR”); and (3) the Company’s performance against certain strategic objectives. Approximately 33% of the RSUs are Time-Based Awards and vest on an annual basis over three years; approximately 33% of the RSUs are based on the satisfaction of the TSR compared to (i) the NAREIT index, (ii) the Standard & Poor’s index, and (iii) a Selected Lodging Company index that serves as a relevant industry/asset specific measurement to our competitors and vest over a three year period with performance periods of one, two and three years; and the remaining 34% based on the Company’s performance against certain strategic objectives and vest on an annual basis. The RSUs granted are considered equity-classified awards. As a result, the fair value of these awards is based on the fair value on the grant date, and such grant date fair value is not adjusted for subsequent movements thereof. We value the time based awards using the closing stock price on the grant date multiplied by the percentage of shares expected to be released, which is 100% of the time based awards. We also value the strategic objective awards using the closing stock price on the grant date multiplied by the percentage of shares expected to be released; however, as a result of the strategic objective awards’ performance conditions, we reevaluate the percentage based on the probability of meeting the performance conditions each period. We value the TSR awards using the economic theory 2017 Award Grants NAREIT index Standard & Poor's index Selected Lodging Company index Grant date stock price $ 18.56 $ 18.56 $ 18.56 Volatility 25.2 % 25.2 % 25.2 % Beta 1.178 1.182 1.006 Risk-free rate - one year award 0.82 % 0.82 % 0.82 % Risk-free rate - two year award 1.20 % 1.20 % 1.20 % Risk-free rate - three year award 1.48 % 1.48 % 1.48 % In making these assumptions, we base the expected volatility on the historical volatility over three years using daily stock price observations. The beta is calculated by comparing the risk of the Company’s stock to the risk of the applicable peer group index, using three years of daily price data. We base the risk-free rate on the Treasury bond yields corresponding to the length of each performance period as reported by the Federal Reserve. The payout schedule for the TSR awards is as follows, with linear interpolation for points between the 30 th th TSR Percentile Ranking Payout (% of Maximum) At or above 75th percentile 100 % 50th percentile 50 30th percentile 25 Below 30th percentile 0 During 2017, 2016 and 2015, we recorded compensation expense of approximately $9 million, $10 million and $8 million, respectively, related to the RSU awards to senior executives. The following table is a summary of the status of our senior executive plans for the three years ended December 31, 2017: Year ended December 31, 2017 2016 2015 Shares Fair Value Shares Fair Value Shares Fair Value (in millions) (per share) (in millions) (per share) (in millions) (per share) Balance, at beginning of year — $ — — $ — — $ — Granted 1.4 15 1.6 18 1.3 16 Vested (1) (0.5 ) 20 (0.6 ) 19 (0.4 ) 15 Forfeited/expired (0.2 ) 20 (1.0 ) 19 (0.9 ) 15 Balance, at end of year 0.7 14 — — — — Issued in calendar year (1) 0.3 19 0.2 15 0.5 24 ___________ (1) Shares that vest at December 31 of each year are issued to the employees in the first quarter of the following year, although the requisite service period is complete. Accordingly, the 0.3 million shares issued in 2017 include shares vested at December 31, 2016, after adjusting for shares withheld to meet employee tax requirements. The shares withheld for employee tax requirements were valued at $4.9 million, $2.4 million and $9.8 million for 2017, 2016 and 2015, respectively. Stock Option Awards Beginning in 2017, we no longer grant stock options awards as part of the 2009 Comprehensive Plan. As of December 31, 2017, 0.6 million shares of stock option awards were outstanding and exercisable, with a weighted average remaining life of 7 years and a weighted average exercise price of $18.98 per share. During 2017, 2016 and 2015, we received proceeds of $7 million, $4 million and $2 million, respectively, from the exercise of stock options. During 2016 and 2015, stock option compensation expense was $1.5 million and $1.8 million, respectively, and all stock option awards outstanding are fully vested. Other Stock Plans In addition to the share-based plans described above, we maintain an upper-middle management plan and an employee stock purchase plan. The upper-middle management awards are time-based, equity-classified awards that vest within three years of the grant date and compensation expense is recognized over the life of the award based on the grant date fair value. Through the employee stock purchase plan, employees can purchase stock at a discount of 10% of the lower of the beginning and ending stock price each quarter. During 2017, 2016 and 2015, we granted 69,000 shares, 118,000 shares and 116,000 shares, respectively, under both of these programs and recorded expense of $1.7 million, $1.6 million and $1.9 million, respectively.

Profit Sharing and Postemployme

Profit Sharing and Postemployment Benefit Plans	12 Months Ended
	Dec. 31, 2017
Compensation And Retirement Disclosure [Abstract]
Pension and Other Postemployment Benefits Plans	9. Profit Sharing and Postemployment Benefit Plans We contribute to defined contribution plans for the benefit of employees who meet certain eligibility requirements and who elect participation in the plans. The discretionary amount to be matched by us is determined annually by Host Inc.’s Board of Directors. Our liability recorded for this obligation is not material. Payments for these items were not material for the three years ended December 31, 2017.

Dispositions

Dispositions	12 Months Ended
	Dec. 31, 2017
Disposal Group Not Discontinued Operation Disposal Disclosures [Abstract]
Dispositions	10. Dispositions We disposed of four hotels in 2017, ten hotels in 2016 and eight hotels in 2015 and recorded gains on sales of approximately $99 million, $243 million and $89 million, respectively. In connection with the sale of the Hilton Melbourne South Wharf in 2017, we recorded Australian capital gain taxes of $17 million associated with the gain on sale. A t December 31, 2017, the Key Bridge Marriott and W New York were classified as held for sale. Subsequent to year end, we sold the Key Bridge Marriott for $190 million, including $8 million for the FF&E replacement funds.

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2017
Business Combinations [Abstract]
Acquisitions	11. Acquisitions Business Combinations On February 16, 2017, we acquired the 347-room Don CeSar, including the adjacent Beach House Suites, for $214 million. On March 7, 2017, we acquired the 305-room W Hollywood for $219 million. Asset Acquisitions For 2017 and 2016, our other asset acquisitions were as follows: • In March 2017, we purchased the ground lease at the Miami Marriott Biscayne Bay for $38 million. • In October 2016, we purchased eight apartments at the Hilton Melbourne South Wharf for $4 million (A$5 million). • In July 2016, we purchased the ground lease at the Key Bridge Marriott for $54 million. Subsequent to year end, we reached an agreement to acquire the 301-room Andaz Maui, 668-room Grand Hyatt San Francisco, and 454-room Hyatt Regency Coconut Point for $1 billion. We expect the acquisition to close during the first quarter of 2018.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurements	12. Fair Value Measurements Derivatives and Hedging Foreign Investment Hedging Instruments. We have three foreign currency forward sale contracts in the aggregate notional amount of $70 million that hedge a portion of the foreign currency exposure resulting from the eventual repatriation of our Canadian dollar and euro net investments in foreign operations. These derivatives are considered hedges of the foreign currency exposure of a net investment in a foreign operation. The contracts are required to be measured at fair value on a recurring basis using significant other observable inputs (Level 2) in the GAAP fair value hierarchy. As a result, we recorded a liability of $5 million and an asset of $12 million as of December 31, 2017 and December 31, 2016, respectively, related to these foreign currency forward sale contracts. These contracts are marked-to-market with changes in fair value recorded to other comprehensive income (loss). We recorded a loss of $14 million and a gain of $6 million for the years ended December 31, 2017 and 2016, respectively. The foreign currency forward sale contracts are valued based on the forward yield curve of the foreign currency to U.S. dollar forward exchange rate on the date of measurement. We also evaluate counterparty credit risk when we calculate the fair value of the derivatives. During 2017, in connection with the maturity of a foreign currency forward purchase contract with a total notional amount of € € In addition to the foreign currency forward sale contracts, we have designated $129 million of the foreign currency draws on our credit facility as hedges of net investments in foreign operations. Changes in fair value of the designated credit facility draws are recorded to foreign currency translation and other comprehensive income (loss) of unconsolidated affiliates. We recorded a loss of $14 million and a gain of $2 million for the years ended December 31, 2017 and 2016, respectively. Impairment During 2017, we recorded an impairment loss of $43 million related to the W New York. The fair value was based on the expected sale proceeds of the property, which is considered an unobservable input (Level 3) in the GAAP fair value hierarchy. The fair value of the property on December 31, 2017, following the impairment loss, was $191 million. The property was classified as held-for-sale as of December 31, 2017. Other Liabilities Fair Value of Other Financial Liabilities. We did not elect the fair value measurement option for any of our other financial liabilities. The fair values of secured debt and our credit facility are determined based on the expected future payments discounted at risk-adjusted rates. Senior notes are valued based on quoted market prices. The fair values of financial instruments not included in this table are estimated to be equal to their carrying amounts. The fair value of certain financial liabilities is shown below (in millions): December 31, 2017 December 31, 2016 Carrying Amount Fair Value Carrying Amount Fair Value Financial liabilities Senior notes (Level 1) $ 2,778 $ 2,932 $ 2,380 $ 2,477 Credit facility (Level 2) 1,170 1,178 1,206 1,211 Mortgage debt and other, excluding capital leases (Level 5 5 62 62

Relationship with Marriott Inte

Relationship with Marriott International	12 Months Ended
	Dec. 31, 2017
Related Party Transactions [Abstract]
Relationship with Marriott International	13. Relationship with Marriott International We have entered into various agreements with Marriott, including those for the management or franchise of approximately 79% of our hotels (as measured by revenues), the partnership agreement for the JW Marriott Hotel Mexico City, Mexico and certain limited administrative services. In 2017, 2016 and 2015, we paid Marriott $199 million, $159 million and $138 million, respectively, of hotel management fees and approximately $9.7 million, $4.6 million and $2.6 million, respectively, of franchise fees.

Hotel Management Agreements and

Hotel Management Agreements and Operating and License Agreements	12 Months Ended
	Dec. 31, 2017
Contractors [Abstract]
Hotel Management Agreements and Operating and License Agreements	14. Hotel Management Agreements and Operating and License Agreements All of our hotels are managed by third parties pursuant to management or operating agreements, with some of our hotels also being subject to separate license agreements addressing matters pertaining to operations under the designated brand. Hotels managed or franchised by Marriott and Hyatt represent 79% and 14% of our total revenues, respectively. Under these agreements, the managers generally have sole responsibility for all activities necessary for the day-to-day operation of the hotels, including establishing room rates, processing reservations and promoting and publicizing the hotels. The managers also provide all employees for the hotels, prepare reports, budgets and projections, and provide other administrative and accounting support services to the hotels. We have approval rights over budgets, capital expenditures, significant leases and contractual commitments, and various other matters. The initial term of our agreements generally is 10 to 25 years, with one or more renewal terms at the option of the manager. The majority of our agreements condition the manager’s right to exercise options for renewal upon the satisfaction of specified economic performance criteria. The manager typically receives a base management fee, which is calculated as a percentage (generally 2-3%) of annual gross revenues, and an incentive management fee, which typically is calculated as a percentage (generally 10-20%) of operating profit after the owner has received a priority return on its investment. In the case of our hotels operating under the W ® ® ® ® ® Pursuant to the agreements, the manager furnishes the hotels with certain chain services, which generally are provided on a central or regional basis to all hotels in the manager’s hotel system. Chain services include central training, advertising and promotion, national reservation systems, computerized payroll and accounting services, and such additional services as needed which may be more efficiently performed on a centralized basis. Costs and expenses incurred in providing such services are allocated among the hotels managed, owned or leased by the manager on a fair and equitable basis. In addition, our managers generally sponsor a guest rewards program, the costs of which are charged to all of the hotels that participate in such program. We are obligated to provide the manager with sufficient funds, generally 5% of the revenue generated at the hotel, to cover the cost of (a) certain non-routine repairs and maintenance to the hotels which normally are capitalized, and (b) replacements and renewals to the hotels’ furniture, fixtures and equipment. Under certain circumstances, we will be required to establish escrow accounts for such purposes under terms outlined in the agreements. We generally are limited in our ability to sell, lease or otherwise transfer the hotels unless the transferee assumes the related management agreement. However, most agreements include owner rights to terminate the agreements on the basis of the manager’s failure to meet certain performance-based metrics. Typically, these criteria are subject to the manager’s ability to ‘cure’ and avoid termination by payment to us of specified deficiency amounts (or, in some instances, waiver of the right to receive specified future management fees). In addition to any performance-based or other termination rights, we have negotiated with Marriott and some of our other managers specific termination rights related to specific agreements. These termination rights can take a number of different forms, including termination of agreements upon sale that leave the property unencumbered by any agreement; termination upon sale provided that the property continues to be operated under a license or franchise agreement with continued brand affiliation; as well as termination without sale or other condition, which may require the payment of a fee. These termination rights also may restrict the number of agreements that may be terminated over any annual or other period; impose limitations on the number of agreements terminated as measured by EBITDA; require that a certain number of properties continue to maintain the brand affiliation; or be restricted to a specific pool of assets.

Geographic and Business Segment

Geographic and Business Segment Information	12 Months Ended
	Dec. 31, 2017
Segment Reporting [Abstract]
Geographic and Business Segment Information	15. Geographic and Business Segment Information We consider each one of our hotels to be an operating segment, none of which meets the threshold for a reportable segment. We also allocate resources and assess operating performance based on individual hotels. All of our other real estate investment activities (primarily our retail and office spaces) are immaterial and, with our operating segments, meet the aggregation criteria, and thus, we report one segment: hotel ownership. Our international operations consist of hotels in three countries as of December 31, 2017. There were no intersegment sales during the periods presented. The following table presents revenues and long-lived assets for each of the geographical areas in which we operate (in millions): 2017 2016 2015 Revenues Property and Equipment, net Revenues Property and Equipment, net Revenues Property and Equipment, net United States $ 5,260 $ 9,548 $ 5,259 $ 9,913 $ 5,129 $ 10,294 Australia 19 — 34 85 34 88 Brazil 22 59 34 63 30 53 Canada 59 71 54 71 58 66 Chile — — 9 — 25 44 Mexico 27 14 29 13 29 18 New Zealand — — 11 — 45 20 Total $ 5,387 $ 9,692 $ 5,430 $ 10,145 $ 5,350 $ 10,583

Guarantees and Contingencies

Guarantees and Contingencies	12 Months Ended
	Dec. 31, 2017
Guarantees [Abstract]
Guarantees and Contingencies	16. Guarantees and Contingencies All of our hotels in Houston and Florida were affected by Hurricanes Harvey and Irma in August and September 2017, respectively. All four of our hotels in Houston were able to remain operational during the hurricane. In Florida, due to evacuation mandates and loss of commercial power, seven of the nine properties were closed for a period of time. We are still evaluating the property and business interruption impact to our hotels. However, our current estimate of the book value of the property and equipment written off, and the related repairs and cleanup costs, is approximately $32 million and have recorded a corresponding insurance receivable of $32 million. We believe our insurance coverage should be sufficient to cover a substantial portion of the property damage to the hotels and the near-term loss of business. As of December 31, 2017, we have received $14 million of property insurance proceeds related to these claims, reducing the receivable to $18 million. Additionally, in 2017 we received $8 million of business interruption proceeds related to the disruption from the hurricanes, which is included in gain on insurance and business interruption settlements on our consolidated statements of operations. We have entered into certain guarantees which consist of commitments made to third parties for leases or debt that are not recognized in our consolidated financial statements due to various dispositions, spin-offs and contractual arrangements, but that we have agreed to pay in the event of certain circumstances, including the default by an unrelated party. We also may have contingent environmental liabilities related to the presence of hazardous or toxic substances. We consider the likelihood of any material payments under these guarantees and contingencies to be remote. The guarantees and contingencies that are not recognized in our consolidated financial statements are listed below: • We remain contingently liable for rental payments on certain divested non-lodging properties. These properties primarily represent certain restaurants that were sold subject to our guarantee of the future rental payments. The aggregate amount of these future rental payments is approximately $9 million as of December 31, 2017. • In connection with the sale of one hotel in January 2005, we remain contingently liable for the amounts due under the ground lease. The future minimum lease payments are approximately $7 million through the full term of the lease, including renewal options. We believe that the likelihood of any material payments related to this ground lease is remote, and we have been indemnified by the purchaser of the hotel. In connection with the sale of the Atlanta Marriott Marquis in January 2013, we retained a contingent liability for potential environmental liabilities, which is not to exceed $5 million. This amount is recorded on our consolidated balance sheet.

Legal Proceedings

Legal Proceedings	12 Months Ended
	Dec. 31, 2017
Commitments And Contingencies Disclosure [Abstract]
Legal Proceedings	17. Legal Proceedings We are involved in various legal proceedings in the ordinary course of business regarding the operation of our hotels and company matters. To the extent not covered by insurance, these lawsuits generally fall into the following broad categories: disputes involving hotel-level contracts, employment litigation, compliance with laws such as the Americans with Disabilities Act, tax disputes and other general matters. Under our management agreements, our operators have broad latitude to resolve individual hotel-level claims for amounts generally less than $150,000. However, for matters exceeding such threshold, our operators may not settle claims without our consent. Based on our analysis of legal proceedings with which we currently are involved or of which we are aware and our experience in resolving similar claims in the past, we have accrued approximately $3 million as of December 31, 2017. We have estimated that, in the aggregate, our losses related to these proceedings could be as much as $15 million. We believe this range represents the maximum potential loss for all of our legal proceedings. We are not aware of any other matters with a reasonably possible unfavorable outcome for which disclosure of a loss contingency is required. No assurances can be given as to the outcome of any pending legal proceedings.

Quarterly Financial Data (unaud

Quarterly Financial Data (unaudited)	12 Months Ended
	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Data (unaudited)	18. Quarterly Financial Data (unaudited) 2017 First Second Third Fourth Quarter Quarter Quarter Quarter (in millions, except per share/unit amounts) Host Hotels & Resorts, Inc.: Revenues $ 1,348 $ 1,441 $ 1,254 $ 1,344 Operating profit 171 244 127 134 Net income 161 212 105 93 Net income attributable to Host Hotels & Resorts, Inc. 158 210 104 92 Basic earnings per common share .21 .28 .14 .12 Diluted earnings per common share .21 .28 .14 .12 Host Hotels & Resorts, L.P. (1) Net income attributable to Host Hotels & Resorts, L.P. 160 212 106 93 Basic earnings per common unit .22 .29 .14 .13 Diluted earnings per common unit .22 .29 .14 .13 2016 First Second Third Fourth Quarter Quarter Quarter Quarter (in millions, except per share/unit amounts) Host Hotels & Resorts, Inc.: Revenues $ 1,339 $ 1,459 $ 1,295 $ 1,337 Operating profit 151 239 144 150 Net income 184 351 108 128 Net income attributable to Host Hotels & Resorts, Inc. 182 347 107 126 Basic earnings per common share .24 .47 .14 .17 Diluted earnings per common share .24 .47 .14 .17 Host Hotels & Resorts, L.P. (1) Net income attributable to Host Hotels & Resorts, L.P. 184 352 108 127 Basic earnings per common unit .25 .48 .15 .17 Diluted earnings per common unit .25 .48 .15 .17 ___________ (1) Other income statement line items not presented for Host L.P. are equal to the amounts presented for Host Inc. The sum of the basic and diluted earnings per common share and OP units for the four quarters in all years presented differs from the annual earnings per common share and OP units due to the required method of computing the weighted average number of shares and OP units in the respective periods.

Real Estate and Accumulated Dep

Real Estate and Accumulated Depreciation	12 Months Ended
	Dec. 31, 2017
Real Estate And Accumulated Depreciation Disclosure [Abstract]
Real Estate and Accumulated Depreciation	SCHEDULE III Page 1 of 4 HOST HOTELS & RESORTS, INC., HOST HOTELS & RESORTS, L.P., AND SUBSIDIARIES REAL ESTATE AND ACCUMULATED DEPRECIATION December 31, 2017 (in millions) Initial Cost Subsequent Foreign Gross Amount at December 31, 2017 Date of Buildings & Costs Currency Buildings & Accumulated Completion of Date Depreciation Description Debt Land Improvements Capitalized Adjustment Land Improvements Total Depreciation Construction Acquired Life Hotels: Atlanta Marriott Suites Midtown — — 26 12 — — 38 38 22 — 1996 40 Axiom Hotel — 36 38 39 — 36 77 113 9 — 2014 33 Boston Marriott Copley Place — — 203 79 — — 282 282 140 — 2002 40 Calgary Marriott Downtown — 5 18 46 — 5 64 69 33 — 1996 40 Chicago Marriott Suites Downers Grove — 2 14 13 — 2 27 29 15 — 1996 40 Chicago Marriott Suites O'Hare — 5 36 23 — 5 59 64 28 — 1998 40 Coronado Island Marriott Resort & Spa — — 53 46 — — 99 99 56 — 1997 40 Costa Mesa Marriott — 3 18 10 — 3 28 31 17 — 1996 40 Courtyard Chicago Downtown/River North — 7 27 15 — 7 42 49 29 — 1992 40 Denver Marriott Tech Center Hotel — 6 26 81 — 6 107 113 48 — 1994 40 Denver Marriott West — — 12 15 — — 27 27 22 — 1983 40 Embassy Suites Chicago-Downtown/Lakefront — — 86 17 — — 103 103 39 — 2004 40 Gaithersburg Marriott Washingtonian Center — 7 22 13 — 7 35 42 23 — 1993 40 Grand Hyatt Atlanta in Buckhead — 8 88 30 — 8 118 126 62 — 1998 40 Grand Hyatt Washington — 154 247 30 — 154 277 431 60 — 2012 33 Hilton Singer Island Oceanfront Resort — 2 10 22 — 2 32 34 24 — 1994 40 Houston Airport Marriott at George Bush Intercontinental — — 10 92 — — 102 102 62 — 1984 40 Houston Marriott Medical Center — — 19 34 — — 53 53 35 — 1998 40 Hyatt Place Waikiki Beach — 12 120 2 — 11 123 134 20 — 2013 34 Hyatt Regency Cambridge, Overlooking Boston — 18 84 12 — 19 95 114 57 — 1998 40 Hyatt Regency Maui Resort & Spa — 92 212 71 — 81 294 375 119 — 2003 40 Hyatt Regency Reston — 11 78 29 — 12 106 118 56 — 1998 40 Hyatt Regency San Francisco Airport — 16 119 111 — 20 226 246 103 — 1998 40 Hyatt Regency Washington on Capitol Hill — 40 230 42 — 40 272 312 100 — 2005 40 JW Marriott Atlanta Buckhead — 16 21 30 — 16 51 67 37 — 1990 40 JW Marriott Hotel Rio de Janeiro — 13 29 3 (21 ) 6 18 24 4 — 2010 40 JW Marriott Houston — 4 26 44 — 6 68 74 41 — 1994 40 JW Marriott Mexico City — 11 35 21 — 10 57 67 49 — 1996 40 JW Marriott Washington D.C. — 26 98 63 — 26 161 187 91 — 2003 40 HOST HOTELS & RESORTS, INC., HOST HOTELS & RESORTS, L.P., AND SUBSIDIARIES REAL ESTATE AND ACCUMULATED DEPRECIATION (continued) December 31, 2017 (in millions) Initial Cost Subsequent Foreign Gross Amount at December 31, 2017 Date of Buildings & Costs Currency Buildings & Accumulated Completion of Date Depreciation Description Debt Land Improvements Capitalized Adjustment Land Improvements Total Depreciation Construction Acquired Life Manchester Grand Hyatt, San Diego — — 548 61 — — 609 609 150 — 2011 35 Marina del Rey Marriott — — 13 35 — — 48 48 28 — 1995 40 Marriott Marquis San Diego Marina — — 202 376 — — 578 578 289 — 1996 40 Miami Marriott Biscayne Bay — 38 27 40 — 38 67 105 50 — 1998 40 Minneapolis Marriott City Center — 34 27 44 — 34 71 105 60 — 1995 40 New Orleans Marriott — 16 96 137 — 16 233 249 156 — 1996 40 New York Marriott Downtown — 19 79 48 — 19 127 146 82 — 1997 40 New York Marriott Marquis — 49 552 225 — 49 777 826 604 — 1986 40 Newark Liberty International Airport Marriott — — 30 48 — — 78 78 49 — 1984 40 Newport Beach Marriott Bayview — 6 14 12 — 6 26 32 17 — 1988 40 Newport Beach Marriott Hotel & Spa — 11 13 117 — 8 133 141 86 — 1988 40 Orlando World Center Marriott — 18 157 387 — 29 533 562 288 — 1997 40 Philadelphia Airport Marriott — — 42 19 — — 61 61 36 — 1995 40 Residence Inn Arlington Pentagon City — 6 29 12 — 6 41 47 24 — 1996 40 Rio de Janeiro Parque Olimpico Hotels — 21 39 — (21 ) 13 26 39 4 2014 — 35 San Antonio Marriott Rivercenter — — 86 86 — — 172 172 104 — 1996 40 San Antonio Marriott Riverwalk — — 45 36 — — 81 81 47 — 1995 40 San Francisco Marriott Fisherman’s Wharf — 6 20 32 — 6 52 58 31 — 1994 40 San Francisco Marriott Marquis — — 278 123 — — 401 401 280 — 1989 40 San Ramon Marriott — — 22 24 — — 46 46 28 — 1996 40 Santa Clara Marriott — — 39 59 — — 98 98 87 — 1989 40 Scottsdale Marriott at McDowell Mountains — 8 48 9 — 8 57 65 21 — 2004 40 Scottsdale Marriott Suites Old Town — 3 20 12 — 3 32 35 20 — 1996 40 Sheraton Boston Hotel — 42 262 69 — 42 331 373 124 — 2006 40 Sheraton New York Times Square Hotel — 346 409 204 — 346 613 959 242 — 2006 40 Sheraton Parsippany Hotel — 8 30 22 — 8 52 60 23 — 2006 40 Sheraton San Diego Hotel & Marina — — 328 39 — — 367 367 123 — 2006 40 Swissôtel Chicago — 29 132 84 — 30 215 245 102 — 1998 40 Tampa Airport Marriott — — 9 25 — — 34 34 29 — 1971 40 The Camby Hotel — 10 63 29 — 10 92 102 45 — 1998 40 The Don CeSar — 46 158 — — 46 158 204 5 — 2017 34 The Fairmont Kea Lani, Maui — 55 294 65 — 55 359 414 137 — 2004 40 The Logan — 26 60 71 — 27 130 157 56 — 1998 40 HOST HOTELS & RESORTS, INC., HOST HOTELS & RESORTS, L.P., AND SUBSIDIARIES REAL ESTATE AND ACCUMULATED DEPRECIATION (continued) December 31, 2017 (in millions) Initial Cost Subsequent Foreign Gross Amount at December 31, 2017 Date of Buildings & Costs Currency Buildings & Accumulated Completion of Date Depreciation Description Debt Land Improvements Capitalized Adjustment Land Improvements Total Depreciation Construction Acquired Life The Phoenician Hotel — 72 307 49 — 74 354 428 34 — 2015 32 The Ritz-Carlton, Amelia Island — 25 115 84 — 25 199 224 107 — 1998 40 The Ritz-Carlton, Marina del Rey — — 52 35 — — 87 87 54 — 1997 40 The Ritz-Carlton, Naples — 19 126 142 — 21 266 287 167 — 1996 40 The Ritz-Carlton, Naples Golf Resort — 22 10 78 — 22 88 110 33 2002 — 40 The Ritz-Carlton, Tysons Corner — — 89 35 — — 124 124 64 — 1998 40 The St. Regis Houston — 6 33 21 — 6 54 60 26 — 2006 40 The Westin Buckhead Atlanta — 5 84 34 — 6 117 123 60 — 1998 40 The Westin Chicago River North — 33 116 12 — 33 128 161 26 — 2010 40 The Westin Cincinnati — — 54 19 — — 73 73 28 — 2006 40 The Westin Denver Downtown — — 89 20 — — 109 109 38 — 2006 40 The Westin Georgetown, Washington D.C. — 16 80 16 — 16 96 112 36 — 2006 40 The Westin Indianapolis — 12 100 17 — 12 117 129 40 — 2006 40 The Westin Kierland Resort & Spa — 100 280 27 — 100 307 407 92 — 2006 40 The Westin Los Angeles Airport — — 102 25 — — 127 127 45 — 2006 40 The Westin Mission Hills Resort & Spa — 40 47 (37 ) — 13 37 50 25 — 2006 40 The Westin New York Grand Central — 156 152 81 — 156 233 389 95 — 2011 40 The Westin Seattle — 39 175 34 — 39 209 248 69 — 2006 40 The Westin South Coast Plaza, Costa Mesa — — 46 24 — — 70 70 42 — 2006 40 The Westin Waltham-Boston — 9 59 18 — 9 77 86 29 — 2006 40 The Whitley, A Luxury Collection Hotel, Atlanta Buckhead — 14 81 71 — 15 151 166 95 — 1996 40 Toronto Marriott Downtown Eaton Centre Hotel — — 27 32 — — 59 59 35 — 1995 40 W Hollywood — — 204 — — — 204 204 6 — 2017 35 W New York - Union Square — 48 145 16 — 48 161 209 34 — 2010 40 W Seattle — 11 125 12 — 11 137 148 41 — 2006 40 Washington Dulles Airport Marriott — — 3 46 — — 49 49 39 — 1970 40 Washington Marriott at Metro Center — 20 24 28 — 20 52 72 37 — 1994 40 Westfields Marriott Washington Dulles — 7 32 18 — 7 50 57 34 — 1994 40 YVE Hotel Miami — 15 41 1 — 15 42 57 5 — 2014 33 Total hotels: — 1,960 8,974 4,553 (42 ) 1,929 13,516 15,445 6,264 Other properties, each less than 5% of total — 5 1 12 — 5 13 18 8 — various 40 TOTAL $ — $ 1,965 $ 8,975 $ 4,565 $ (42 ) $ 1,934 $ 13,529 $ 15,463 $ 6,272 HOST HOTELS & RESORTS, INC., AND SUBSIDIARIES HOST HOTELS & RESORTS, L.P., AND SUBSIDIARIES REAL ESTATE AND ACCUMULATED DEPRECIATION December 31, 2017 (in millions) Notes: (A) The change in total cost of properties for the fiscal years ended December 31, 2017, 2016 and 2015 is as follows: Balance at December 31, 2014 $ 15,160 Additions: Acquisitions 419 Capital expenditures and transfers from construction-in-progress 383 Deductions: Dispositions and other (368 ) Assets held for sale (78 ) Balance at December 31, 2015 15,516 Additions: Acquisitions 58 Capital expenditures and transfers from construction-in-progress 510 Deductions: Dispositions and other (331 ) Assets held for sale (223 ) Balance at December 31, 2016 15,530 Additions: Acquisitions 447 Capital expenditures and transfers from construction-in-progress 191 Deductions: Dispositions and other (567 ) Impairments (43 ) Assets held for sale (95 ) Balance at December 31, 2017 $ 15,463 (B) The change in accumulated depreciation and amortization of real estate assets for the fiscal years ended December 31, 2017, 2016 and 2015 is as follows: Balance at December 31, 2014 $ 5,283 Depreciation and amortization 558 Dispositions and other (148 ) Depreciation on assets held for sale (27 ) Balance at December 31, 2015 5,666 Depreciation and amortization 572 Dispositions and other (159 ) Depreciation on assets held for sale (130 ) Balance at December 31, 2016 5,949 Depreciation and amortization 563 Dispositions and other (247 ) Depreciation on assets held for sale 7 Balance at December 31, 2017 $ 6,272 (C) The aggregate cost of real estate for federal income tax purposes is approximately $10,698 million at December 31, 2017. (D) The total cost of properties excludes construction-in-progress properties.

Summary of Significant Accoun29

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Basis of Presentation and Principles of Consolidation	Basis of Presentation and Principles of Consolidation The accompanying consolidated financial statements include the consolidated accounts of Host Inc., Host L.P. and their subsidiaries and controlled affiliates, including joint ventures and partnerships. We consolidate subsidiaries when we have the ability to control them. For the majority of our hotel and real estate investments, we consider those control rights to be (i) approval or amendment of developments plans, (ii) financing decisions, (iii) approval or amendments of operating budgets, and (iv) investment strategy decisions. We also evaluate our subsidiaries to determine if they are variable interest entities (“VIEs”). If a subsidiary is a VIE, it is subject to the consolidation framework specifically for VIEs. Typically, the entity that has the power to direct the activities that most significantly impact economic performance consolidates the VIE. We consider an entity a VIE if equity investors own an interest therein that does not have the characteristics of a controlling financial interest or if such investors do not have sufficient equity at risk for the entity to finance its activities without additional subordinated financial support. We review our subsidiaries and affiliates at least annually to determine if (i) they should be considered VIEs, and (ii) whether we should change our consolidation determination based on changes in the characteristics thereof. Three partnerships are considered VIE’s, as the general partner maintains control over the decisions that most significantly impact the partnerships. The first VIE is the operating partnership, Host L.P., which is consolidated by Host Inc., of which Host Inc. is the general partner and holds 99% of the limited partner interests. Host Inc.’s sole significant asset is its investment in Host L.P. and, consequently, substantially all of Host Inc.’s assets and liabilities represent assets and liabilities of Host L.P. All of Host Inc.’s debt is an obligation of Host L.P. and may be settled only with assets of Host L.P. The consolidated partnership that owns the Houston Airport Marriott at George Bush Intercontinental, of which we are the general partner and hold 85% of the partnership interests, also is a VIE. The total assets of this VIE at December 31, 2017 are $53 million and consist primarily of cash and property and equipment. Liabilities for the VIE total $4 million and consist of accounts payable and deferred revenue. The unconsolidated partnership that owns the Philadelphia Marriott Downtown, of which we hold 11% of the limited partner interests, also is a VIE. The carrying amount of this investment at December 31, 2017 is $(6) million and is included in advances to and investments in affiliates. The mortgage debt held by this VIE is non-recourse to us.
Use of Estimates in the Preparation of Financial Statements	Use of Estimates in the Preparation of Financial Statements The preparation of financial statements in conformity with U.S. generally accepted accounting principles, or GAAP, requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
Cash and Cash Equivalents	Cash and Cash Equivalents We consider all highly liquid investments with a maturity of three months or less at the date of purchase to be cash equivalents.
Restricted Cash	Restricted Cash Restricted cash may include reserves for debt service, real estate taxes, insurance, and furniture, fixtures and equipment replacement, as well as cash collateral and excess cash flow deposits due to mortgage debt agreement restrictions and provisions, or reserves required for potential legal damages.
Property and Equipment	Property and Equipment Generally, property and equipment is recorded at cost. For properties we develop, cost includes interest and real estate taxes incurred during construction. For property and equipment acquired in a business combination, we record the assets based on their fair value as of the acquisition date. Replacements and improvements and capital leases are capitalized, while repairs and maintenance are expensed as incurred. We capitalize certain inventory (such as china, glass, silver, and linen) at the time of a hotel opening or acquisition, or when significant inventory is purchased (in conjunction with a major rooms renovation or when the number of rooms or meeting space at a hotel is expanded). These amounts then are amortized over the estimated useful life of three years. Subsequent replacement purchases are expensed when placed in service. We maintain a furniture, fixtures and equipment replacement fund for renewal and replacement capital expenditures at our hotels, which generally is funded with 5% of property revenues. Impairment testing. We analyze our consolidated properties for impairment throughout the year when events or circumstances occur that indicate the carrying value may not be recoverable. We consider a property to be impaired when the sum of the future undiscounted cash flows over our remaining estimated holding period is less than the carrying value of the asset. We test for impairment in several situations, including when a property has a current or projected loss from operations, when it becomes more likely than not that a hotel will be sold before the end of its previously estimated useful life, or when other events, trends, contingencies or changes in circumstances indicate that a triggering event has occurred and the carrying value of an asset may not be recoverable. For impaired assets, we record an impairment expense equal to the excess of the carrying value of the asset over its fair value. To the extent that a property has a substantial remaining estimated useful life and management does not believe that it is more likely than not that the property will be sold prior to the end thereof, it would be unusual for undiscounted cash flows to be insufficient to recover the property’s carrying value. In the absence of other factors, we assume that the estimated useful life is equal to the remaining GAAP depreciable life because of the continuous property maintenance and improvement capital expenditures required under our management agreements. We adjust our assumptions with respect to the remaining useful life of the property if situations dictate otherwise, such as an expiring ground lease, or that it is more likely than not that the asset will be sold prior to its previously expected useful life. We also consider the effect of regular renewal and replacement capital expenditures on the estimated useful life of our properties, including critical infrastructure, which regularly is maintained and then replaced at the end of its useful life. In the evaluation of the potential impairment of our assets, we make many assumptions and estimates, including: • projected cash flows, both from operations and from the eventual sale; • the expected useful life and holding period of the asset; • the future required capital expenditures; and • fair values, including consideration of capitalization rates, discount rates and comparable selling prices, as well as available third-party appraisals. While we consider all of the above indicators as preliminary indicators to determine if the carrying value may not be recovered by undiscounted cash flows, we reviewed the actual year-to-date and the projected cash flows from operations in order to identify properties with actual or projected annual operating losses or minimal operating profit as of December 31, 2017. The projected cash flows consider items such as booking pace, occupancy, room rate and property-level operating costs. As a result of our review, we identified one property that required further consideration of property and market specific conditions or factors to determine if it was impaired. During 2017, we recognized impairment expense of $43 million on the W New York, which is included in depreciation and amortization expense. During negotiations with potential buyers, we received notice that the building commission would broadly interpret a local ordinance that would significantly restrict any potential alternative uses of the property, thus lowering its market value. In other circumstances, we use an undiscounted cash flow analysis, considering a range of RevPAR and operating margins compared to the prior years’ operating results in evaluating the probability-weighted projected cash flows from operations. To appropriately evaluate the extent to which the carrying value of the asset is recoverable, we projected cash flows at a stabilized growth rate over its remaining estimated useful life using assumptions and estimates that we believe reflect current market conditions. No impairment was recorded in 2016 and 2015. Classification of Assets as “Held for Sale”. We will classify a hotel as held for sale when the sale thereof is probable, will be completed within one year and actions to complete the sale are unlikely to change or that the sale will not occur. This policy is consistent with our experience with real estate transactions under which the timing and final terms of a sale frequently are not known until purchase agreements are executed, the buyer has a significant deposit at risk and no financing contingencies exist which could prevent the transaction from being completed in a timely manner. We typically classify assets as held for sale when all of the following conditions are met: • Host Inc.’s Board of Directors has approved the sale (to the extent that the dollar amount of the sale requires Board approval); • a binding agreement to sell the property has been signed under which the buyer has committed a significant amount of nonrefundable cash; and • no significant financing contingencies exist which could prevent the transaction from being completed in a timely manner. If these criteria are met, we will cease recording depreciation expense and will record an impairment expense if the fair value less costs to sell is less than the carrying amount of the hotel. We will classify the assets and related liabilities as held for sale on the balance sheet. Gains on sales of properties are recognized at the time of sale or are deferred and recognized as income in subsequent periods as conditions requiring deferral are satisfied or expire without further cost to us. Discontinued Operations. We generally include the operations of a hotel that was sold or a hotel that has been classified as held for sale in continuing operations, including the gain or loss on the sale, unless the sale represents a strategic shift that will have a major impact on our future operations and financial results. Asset retirement obligations. We recognize the fair value of any liability for conditional asset retirement obligations, including environmental remediation liabilities, when incurred, which generally is upon acquisition, construction, or development and/or through the normal operation of the asset, if sufficient information exists with which to reasonably estimate the fair value of the obligation. Depreciation and Amortization Expense. We depreciate our property and equipment using the straight-line method. Depreciation expense is based on the estimated useful life of our assets and amortization expense for leasehold improvements is based on the shorter of the lease term or the estimated useful life of the related assets. The useful lives of the assets are based on a number of assumptions, including cost and timing of capital expenditures to maintain and refurbish the assets, as well as specific market and economic conditions. While management believes its estimates are reasonable, a change in the estimated useful lives could affect depreciation expense and net income (loss) or the gain or loss on the sale of any of our hotels.
Intangible Assets and Acquired Liabilities	Intangible Assets and Acquired Liabilities In conjunction with our acquisitions, we may identify intangible assets and other liabilities. These identifiable intangible assets and other liabilities typically include above and below market contracts, including ground and retail leases and management and franchise agreements, which are recorded at fair value. These contract values are based on the present value of the difference between contractual amounts to be paid pursuant to the contracts acquired and our estimate of the fair value of rates for similar contracts measured over the period equal to the remaining non-cancelable term of the contract. Intangible assets and other liabilities are amortized using the straight-line method over the remaining non-cancelable term of the related agreements.
Non-Controlling Interests	Non-Controlling Interests Other Consolidated Partnerships. As of December 31, 2017, we consolidate three majority-owned partnerships that have third-party, non-controlling ownership interests. The third-party partnership interests are included in non-controlling interest-other consolidated partnerships on the consolidated balance sheets and totaled $29 million and $39 million as of December 31, 2017 and 2016, respectively. One of the partnerships has a finite life that terminates in 2095, and the associated non-controlling interests are mandatorily redeemable at the end of, but not prior to, the finite life. Net income attributable to non-controlling interests of consolidated partnerships is included in our determination of net income. Net income attributable to non-controlling interests of third parties was immaterial for each of the years ended December 31, 2017, 2016 and 2015. Host Inc.’s treatment of the non-controlling interests of Host L.P. Host Inc. adjusts the non-controlling interests of Host L.P. each period so that the amount presented equals the greater of its carrying value based on its historical cost or its redemption value. The historical cost is based on the proportional relationship between the historical cost of equity held by our common stockholders relative to that of the unitholders of Host L.P. The redemption value is based on the amount of cash or Host Inc. common stock, at our option, that would be paid to the non-controlling interests of Host L.P. if it were terminated. We have estimated that the redemption value is equivalent to the number of shares issuable upon conversion of the OP units currently owned by unrelated third parties (one OP unit may be exchanged for 1.021494 shares of Host Inc. common stock) valued at the market price of Host Inc. common stock at the balance sheet date. Non-controlling interests of Host L.P. are classified in the mezzanine section of the balance sheet as they do not meet the requirements for equity classification because the redemption feature requires the delivery of registered shares. The table below details the historical cost and redemption values for the non-controlling interests of Host L.P.: As of December 31, 2017 2016 OP units outstanding (millions) 8.2 8.6 Market price per Host Inc. common share $ 19.85 $ 18.84 Shares issuable upon conversion of one OP unit 1.021494 1.021494 Redemption value (millions) $ 167 $ 165 Historical cost (millions) 80 84 Book value (millions) (1) 167 165 ___________ (1) Net income is allocated to the non-controlling interests of Host L.P. based on their weighted average ownership percentage during the period. Net income attributable to Host Inc. has been reduced by the amount attributable to non-controlling interests in Host L.P., which totaled $7 million, $9 million, and $7 million for 2017, 2016, and 2015, respectively.
Investments in Affiliates	Investments in Affiliates Other-than-Temporary Impairment of an Investment. We perform an analysis on each of our equity method investments for impairment based on the occurrence of triggering events that would indicate that the carrying amount of an investment exceeds its fair value on an other-than-temporary basis. Triggering events can include a decline in distributable cash flows from the investment, a change in the expected useful life or other significant events which would decrease the value of the investment. Our investments primarily consist of joint ventures which own hotels; therefore, generally we will have few observable inputs and will determine fair value based on a discounted cash flow analysis of the investment, as well as consideration of the impact of other elements (i.e. control premiums, etc.). We use certain inputs, such as available third-party appraisals and forecast net operating income for the hotels, to estimate the expected cash flows. If an equity method investment is impaired and that impairment is determined to be other than temporary, an expense is recorded for the difference between the fair value and the carrying amount of the investment. No other-than-temporary impairment expense was recorded in 2017, 2016 and 2015. Distributions from Investments in Affiliates. We classify the distributions from our equity investments in the statements of cash flows based upon an evaluation of the specific facts and circumstances of each distribution. For example, distributions from cash generated by property operations are classified as cash flows from operating activities. However, distributions received as a result of property sales are classified as cash flows from investing activities.
Income Taxes	Income Taxes Host Inc. has elected to be treated as a REIT effective January 1, 1999, pursuant to the U.S. Internal Revenue Code of 1986, as amended. It is our intention to continue to comply with the REIT qualification requirements and to maintain our qualification for taxation as a REIT. A corporation that elects REIT status and meets certain tax law requirements regarding the distribution of its taxable income to its stockholders as prescribed by applicable tax laws and complies with certain other requirements (relating primarily to the composition of its assets and the sources of its gross income) generally is not subject to federal and state income taxation on its operating income that is distributed to its stockholders. As a partnership for federal income tax purposes, Host L.P. is not subject to federal income tax. Host L.P. is, however, subject to state, local and foreign income and franchise tax in certain jurisdictions. Additionally, each of the Host L.P. taxable REIT subsidiaries is taxable as a regular C corporation, subject to federal, state and foreign income tax. Our consolidated income tax provision or benefit includes the income tax provision or benefit related to the operations of our taxable REIT subsidiaries, and state, local, and foreign income and franchise taxes incurred by Host L.P. and its subsidiaries. Deferred Under the partnership agreement, Host L.P. generally is required to reimburse Host Inc. for any tax payments it is required to make. Accordingly, the tax information included herein represents disclosures regarding Host Inc. and its subsidiaries. Deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases, and for net operating loss, capital loss, interest expense, and tax credit carryovers. Deferred tax assets and liabilities are measured using enacted tax rates in effect for the year in which such amounts are expected to be realized or settled. The effect on deferred tax assets and liabilities from a change in tax rates is recognized in earnings in the period when the new rate is enacted. However, deferred tax assets are recognized only to the extent that it is more likely than not that they will be realized based on consideration of available evidence, including future reversals of existing taxable temporary differences, future projected taxable income and tax planning strategies. As a result of the enactment of the Tax Cuts and Jobs Act on December 22, 2017, the net deferred tax asset as at December 31, 2017 has been revalued at the new corporate income tax rate of 21% that is effective on January 1, 2018. GAAP prescribes a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken in a tax return. We must determine whether it is “more-likely-than-not” that a tax position will be sustained upon examination, including resolution of any related appeals or litigation processes, based on the technical merits of the position. Once it is determined that a position meets the more-likely-than-not recognition threshold, the position is measured at the largest amount of benefit that is greater than 50% likely of being realized upon settlement in order to determine the amount of benefit to recognize in the financial statements. This accounting standard applies to all tax positions related to income taxes. We recognize accrued interest related to unrecognized tax benefits in interest expense and penalties in operating expenses.
Deferred Charges	Deferred Charges Financing costs related to long-term debt are deferred and amortized over the remaining life of the debt using the effective interest method. These costs are presented as a direct deduction from the related long-term debt on the balance sheets.
Foreign Currency Translation	Foreign Currency Translation As of December 31, 2017, our international operations consist of hotels located in Brazil, Canada and Mexico, as well as investments in the Euro JV and the Asia/Pacific JV. The financial statements of these hotels and our investments therein are maintained in their functional currency, which generally is the local currency, and their operations are translated to U.S. dollars using the average exchange rates for the period. The assets and liabilities of the hotels and the investments therein are translated to U.S. dollars using the exchange rate in effect at the balance sheet date. The resulting translation adjustments are reflected in other comprehensive income (loss). Foreign currency transactions are recorded in the functional currency for each applicable foreign entity using the exchange rates prevailing at the dates of the transactions. Assets and liabilities denominated in foreign currencies are remeasured at period end exchange rates. The resulting exchange differences are recorded in gain (loss) on foreign currency transactions and derivatives on the accompanying consolidated statements of operations, except when recorded in other comprehensive income (loss) as qualifying net investment hedges.
Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) The components of total accumulated other comprehensive income (loss) in the balance sheets are as follows (in millions): As of December 31, 2017 2016 Gain on foreign currency forward contracts $ 26 $ 40 Loss on interest rate swap cash flow hedges (5 ) (5 ) Foreign currency translation (83 ) (121 ) Other comprehensive loss attributable to non-controlling interests 2 3 Total accumulated other comprehensive loss $ (60 ) $ (83 ) During 2017, we reclassified a net loss due to foreign currency translation of $14 million that had been recognized previously in other comprehensive income (loss) due to the sale of the Hilton Melbourne South Wharf on July 28, 2017. During 2016, we reclassified a net loss due to foreign currency translation of $17 million that had been recognized previously in other comprehensive income (loss) upon the sale of two hotels in Chile and four hotels in New Zealand in 2016. The reclassified losses were recorded as a reduction to the gain on sale of these hotels.
Revenues	Revenues Our results of operations include revenues and expenses of our hotels. Revenues are recognized when the services are provided. Additionally, we collect sales, use, occupancy and similar taxes at our hotels, which we present on a net basis (excluded from revenues) in our statements of operations.
Fair Value Measurement	Fair Value In evaluating the fair value of both financial and non-financial assets and liabilities, GAAP outlines a valuation framework and creates a fair value hierarchy that distinguishes between market assumptions based on market data (“observable inputs”) and a reporting entity’s own assumptions about market data (“unobservable inputs”). Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability at the measurement date in an orderly transaction (an “exit price”). Assets and liabilities are measured using inputs from three levels of the fair value hierarchy. The three levels are as follows: Level 1 — Inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that we have the ability to access at the measurement date. An active market is defined as a market in which transactions occur with sufficient frequency and volume to provide pricing on an ongoing basis. Level 2 — Inputs include quoted prices in active markets for similar assets and liabilities, quoted prices for identical or similar assets or liabilities in markets that are not active (markets with few transactions), inputs other than quoted prices that are observable for the asset or liability (i.e., interest rates, yield curves, etc.), and inputs that are derived principally from or corroborated by observable market data correlation or other means. Level 3 — Unobservable inputs reflect our assumptions about the pricing of an asset or liability when observable inputs are not available.
Earnings Per Common Share (Unit)	Earnings Per Common Share (Unit) Basic earnings per common share (unit) is computed by dividing net income attributable to common stockholders (unitholders) by the weighted average number of shares of Host Inc. common stock or Host L.P. common units outstanding. Diluted earnings per common share (unit) is computed by dividing net income attributable to common stockholders (unitholders), as adjusted for potentially dilutive securities, by the weighted average number of shares of Host Inc. common stock or Host L.P. common units outstanding plus other potentially dilutive securities. Dilutive securities may include shares granted under comprehensive stock plans or the common OP units distributed to Host Inc. to support such shares granted, and other non-controlling interests that have the option to convert their limited partner interests to common OP units and convertible debt securities. No effect is shown for any securities that are anti-dilutive. The calculation of Host Inc. basic and diluted earnings per common share is shown below (in millions, except per share amounts): Year ended December 31, 2017 2016 2015 Net income $ 571 $ 771 $ 565 Less: Net income attributable to non-controlling interests (7 ) (9 ) (7 ) Net income attributable to Host Inc. $ 564 $ 762 $ 558 Basic weighted average shares outstanding 738.6 743.0 752.4 Assuming distribution of common shares granted under the comprehensive stock plans, less shares assumed purchased at market 0.5 0.7 0.5 Diluted weighted average shares outstanding (1) 739.1 743.7 752.9 Basic earnings per common share $ .76 $ 1.03 $ .74 Diluted earnings per common share $ .76 $ 1.02 $ .74 ___________ (1) There were approximately 25 million potentially dilutive shares (on a weighted average basis) for the year ended December 31, 2015 related to our exchangeable senior debentures, which were anti-dilutive for the period. The exchangeable senior debentures were redeemed in 2015 in exchange for 32 million common shares of Host Inc. The calculation of Host L.P. basic and diluted earnings per common unit is shown below (in millions, except per unit amounts): Year ended December 31, 2017 2016 2015 Net income $ 571 $ 771 $ 565 Less: Net loss attributable to non-controlling interests — — — Net income attributable to Host L.P. $ 571 $ 771 $ 565 Basic weighted average units outstanding 731.5 736.3 745.7 Assuming distribution of common units to support shares granted under the comprehensive stock plans, less shares assumed purchased at market 0.5 0.6 0.5 Diluted weighted average units outstanding (1) 732.0 736.9 746.2 Basic earnings per common unit $ .78 $ 1.05 $ .76 Diluted earnings per common unit $ .78 $ 1.05 $ .76 ___________ (1) There were approximately 25 million potentially dilutive units (on a weighted average basis) for the year ended December 31, 2015 related to our exchangeable senior debentures, which were anti-dilutive for the period. The exchangeable senior debentures were redeemed in 2015 and Host L.P. issued 31.3 million units to Host Inc. in connection with such redemption.
Share-Based Payments	Share-Based Payments At December 31, 2017, Host Inc. maintained two stock-based employee compensation plans. Upon the issuance of Host’s common stock under the compensation plans, Host L.P. will issue to Host Inc. common OP units of an equivalent value. These liabilities are included in the consolidated financial statements for Host Inc. and Host L.P. We recognize costs resulting from Host Inc.’s share-based payment transactions over their vesting periods. We classify share-based payment awards granted in exchange for employee services either as equity-classified awards or liability-classified awards Equity-classified awards are measured based on the fair value on the date of grant. Liability-classified awards are remeasured to fair value each reporting period. Effective January 1, 2017, we implemented a new stock-based employee compensation plan. In conjunction with the adoption of ASU No. 2016-09, the awards under the new plan are classified as equity. The plan includes awards that vest over a one-year, two-year and three-year period. For performance-based awards, compensation cost will be recognized when the achievement of the performance condition is considered probable. If a performance condition has more than one outcome that is probable, recognition of compensation cost will be based on the condition that is the most likely outcome. No compensation cost is recognized for awards for which employees do not render the requisite services.
Concentrations of Credit Risk	Concentrations of Credit Risk Financial instruments that potentially subject us to significant concentrations of credit risk consist principally of cash and cash equivalents. We are exposed to credit risk with respect to cash held at various financial institutions, access to our credit facility, and amounts due or payable under our derivative contracts. As of December 31, 2017, we do not have any credit risk exposure related to our derivative instruments. At December 31, 2016, our exposure to risk related to our derivative instruments totaled $12 million. The counterparties to such instruments are investment grade financial institutions. Our credit risk exposure with regard to our cash and the available capacity under the revolver portion of our credit facility is spread among a diversified group of investment grade financial institutions.
Business Combinations	Business Combinations We recognize identifiable assets acquired, liabilities assumed, and non-controlling interests in a business combination at their fair values at the acquisition date based on the exit price (i.e. the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date). We evaluate several factors, including market data for similar assets, expected cash flows discounted at risk adjusted rates and replacement cost for the assets to determine an appropriate exit cost when evaluating the fair value of our assets and liabilities acquired. Property and equipment are recorded at fair value and such fair value is allocated to buildings, improvements, furniture, fixtures and equipment using appraisals and valuations performed by management and independent third parties. Acquisition-related costs, such as due diligence, legal and accounting fees, are not capitalized or applied in determining the fair value of the acquired assets. Other items that we evaluate in a business combination include identifiable intangible assets, capital lease assets and obligations and goodwill. Identifiable intangible assets typically consist of assumed contracts, including ground and retail leases and management and franchise agreements, which are recorded at fair value. Capital lease obligations that are assumed as part of the acquisition of a leasehold interest are measured at fair value and are included as debt on the accompanying balance sheet and we record the corresponding right-to-use assets. Classification of a lease does not change if it is part of a business combination. In making estimates of fair values for purposes of allocating purchase price, we may utilize a number of sources that arise in connection with the acquisition or financing of a property and other market data, including third-party appraisals and valuations. In certain situations, and usually only in connection with the acquisition of a foreign hotel, a deferred tax liability is recognized due to the difference between the fair value and the tax basis of the acquired assets at the acquisition date. Any consideration paid in excess of the net fair value of the identifiable assets and liabilities acquired would be recorded to goodwill. In very limited circumstances, we may record a bargain purchase gain if the consideration paid is less than the net fair value of the assets and liabilities acquired.
Reclassifications	Reclassifications Certain prior year financial statement amounts have been reclassified to conform with the current year presentation.
New Accounting Standards	New Accounting Standards In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) Other Income – Gains and Losses from the Derecognition of Nonfinancial Assets (Subtopic 610-20) In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842), In March 2016, the FASB issued ASU No. 2016-09, Improvements to Employee Share-Based Payment Accounting In November 2016, the FASB issued ASU No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash In January 2017, the FASB issued ASU No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business

Summary of Significant Accoun30

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2017
Consolidated Portfolio of Hotels by Location	As of December 31, 2017, the hotels in our consolidated portfolio are located in the following countries: Hotels United States 88 Brazil 3 Canada 2 Mexico 1 Total 94
Historical Cost and Redemption Values for the Non-Controlling Interests	The table below details the historical cost and redemption values for the non-controlling interests of Host L.P.: As of December 31, 2017 2016 OP units outstanding (millions) 8.2 8.6 Market price per Host Inc. common share $ 19.85 $ 18.84 Shares issuable upon conversion of one OP unit 1.021494 1.021494 Redemption value (millions) $ 167 $ 165 Historical cost (millions) 80 84 Book value (millions) (1) 167 165 ___________ (1)
Components of Total Accumulated Other Comprehensive Income in the Balance Sheets	The components of total accumulated other comprehensive income (loss) in the balance sheets are as follows (in millions): As of December 31, 2017 2016 Gain on foreign currency forward contracts $ 26 $ 40 Loss on interest rate swap cash flow hedges (5 ) (5 ) Foreign currency translation (83 ) (121 ) Other comprehensive loss attributable to non-controlling interests 2 3 Total accumulated other comprehensive loss $ (60 ) $ (83 )
Earnings Per Common Share (Unit)	The calculation of Host Inc. basic and diluted earnings per common share is shown below (in millions, except per share amounts): Year ended December 31, 2017 2016 2015 Net income $ 571 $ 771 $ 565 Less: Net income attributable to non-controlling interests (7 ) (9 ) (7 ) Net income attributable to Host Inc. $ 564 $ 762 $ 558 Basic weighted average shares outstanding 738.6 743.0 752.4 Assuming distribution of common shares granted under the comprehensive stock plans, less shares assumed purchased at market 0.5 0.7 0.5 Diluted weighted average shares outstanding (1) 739.1 743.7 752.9 Basic earnings per common share $ .76 $ 1.03 $ .74 Diluted earnings per common share $ .76 $ 1.02 $ .74 ___________ (1) There were approximately 25 million potentially dilutive shares (on a weighted average basis) for the year ended December 31, 2015 related to our exchangeable senior debentures, which were anti-dilutive for the period. The exchangeable senior debentures were redeemed in 2015 in exchange for 32 million common shares of Host Inc.
HOST HOTELS & RESORTS L.P.
Earnings Per Common Share (Unit)	The calculation of Host L.P. basic and diluted earnings per common unit is shown below (in millions, except per unit amounts): Year ended December 31, 2017 2016 2015 Net income $ 571 $ 771 $ 565 Less: Net loss attributable to non-controlling interests — — — Net income attributable to Host L.P. $ 571 $ 771 $ 565 Basic weighted average units outstanding 731.5 736.3 745.7 Assuming distribution of common units to support shares granted under the comprehensive stock plans, less shares assumed purchased at market 0.5 0.6 0.5 Diluted weighted average units outstanding (1) 732.0 736.9 746.2 Basic earnings per common unit $ .78 $ 1.05 $ .76 Diluted earnings per common unit $ .78 $ 1.05 $ .76 ___________ (1) There were approximately 25 million potentially dilutive units (on a weighted average basis) for the year ended December 31, 2015 related to our exchangeable senior debentures, which were anti-dilutive for the period. The exchangeable senior debentures were redeemed in 2015 and Host L.P. issued 31.3 million units to Host Inc. in connection with such redemption.
European Joint Venture
Consolidated Portfolio of Hotels by Location	As of December 31, 2017, the Euro JV hotels are located in the following countries: Hotels Belgium 1 France 3 Germany 1 Spain 2 Sweden 1 The Netherlands 2 United Kingdom 1 Total 11

Property and Equipment (Tables)

Property and Equipment (Tables)	12 Months Ended
	Dec. 31, 2017
Property Plant And Equipment [Abstract]
Property and Equipment	Property and equipment consists of the following (in millions): As of December 31, 2017 2016 Land and land improvements $ 1,934 $ 2,047 Buildings and leasehold improvements 13,529 13,483 Furniture and equipment 2,357 2,377 Construction in progress 106 86 17,926 17,993 Less accumulated depreciation and amortization (8,234 ) (7,848 ) $ 9,692 $ 10,145

Investments in Affiliates (Tabl

Investments in Affiliates (Tables)	12 Months Ended
	Dec. 31, 2017
Investments In And Advances To Affiliates Schedule Of Investments [Abstract]
Summary of Investments in Affiliates	We own investments in joint ventures for which the equity method of accounting is used. The debt of our joint ventures is non-recourse to, and not guaranteed by, us, and a default of such debt does not trigger a default under any of our debt instruments. Investments in affiliates consist of the following (in millions): As of December 31, 2017 Ownership Interests Our Investment Our Portion of Debt Total Debt Distributions received in 2017 (1) Assets Euro JV (2) 32.1 - 33.4% $ 271 $ 316 $ 1,029 $ 31 Eleven hotels in Europe Asia/Pacific JV 25 % 15 — — — A 36% interest in seven hotels in India Maui JV 67 % 83 27 41 7 131-unit vacation ownership project in Maui, HI Hyatt Place JV 50 % (13 ) 30 60 3 One hotel in Nashville, TN Harbor Beach JV 49.9 % (28 ) 75 149 7 One hotel in Fort Lauderdale, FL Philadelphia Marriott Downtown JV 11 % (6 ) 24 217 1 One hotel in Philadelphia, PA Fifth Wall Ventures 5 — — — Real estate industry technology investment Total $ 327 $ 472 $ 1,496 $ 49 As of December 31, 2016 Ownership Interests Our Investment Our Portion of Debt Total Debt Distributions received in 2016 (1) Assets Euro JV 32.1 - 33.4% $ 227 $ 236 $ 744 $ 18 Ten hotels in Europe Asia/Pacific JV (3) 25 % 17 — — 9 A 36% interest in five operating hotels and two hotels in final stages of completion in India Maui JV 67 % 81 27 41 — 131-unit vacation ownership project in Maui, HI Hyatt Place JV (4) 50 % (12 ) 30 60 17 One hotel in Nashville, TN Harbor Beach JV 49.9 % (24 ) 75 149 6 One hotel in Fort Lauderdale, FL Philadelphia Marriott Downtown JV 11 % (6 ) 24 221 2 One hotel in Philadelphia, PA Fifth Wall Ventures 3 — — — Real estate industry technology investment Total $ 286 $ 392 $ 1,215 $ 52 ___________ (1) Distributions received were funded by cash from operations unless otherwise noted. (2) Distributions received from Euro JV in 2017 include $9 million of loan refinancing proceeds. (3) Distributions received from the Asia/Pacific JV in 2016 were primarily related to the sale of the Four Points by Sheraton Perth in 2015. (4) Distributions received from the Hyatt Place JV in 2016 include $14 million of loan refinancing proceeds.
Combined Summarized Balance Sheet Information	Combined summarized balance sheet information for our affiliates is as follows (in millions): As of December 31, 2017 2016 Property and equipment, net $ 1,945 $ 1,634 Timeshare inventory 117 137 Other assets 566 514 Total assets $ 2,628 $ 2,285 Debt $ 1,496 $ 1,215 Other liabilities 330 319 Equity 802 751 Total liabilities and equity $ 2,628 $ 2,285
Combined Summarized Operating Results For Affiliates	Combined summarized operating results for our affiliates is as follows (in millions): Year ended December 31, 2017 2016 2015 Total revenues $ 621 $ 599 $ 769 Operating expenses Expenses (436 ) (437 ) (558 ) Depreciation and amortization (78 ) (73 ) (84 ) Operating profit 107 89 127 Interest income 6 5 3 Interest expense (56 ) (57 ) (80 ) Other gain (loss) 4 (2 ) 141 Net income $ 61 $ 35 $ 191

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2017
Debt Disclosure [Abstract]
Debt	Debt consists of the following (in millions): As of December 31, 2017 2016 Series Z senior notes, with a rate of 6% due October 2021 $ 298 $ 297 Series B senior notes, with a rate of 5¼% due March 2022 348 347 Series C senior notes, with a rate of 4¾% due March 2023 447 446 Series D senior notes, with a rate of 3¾% due October 2023 398 398 Series E senior notes, with a rate of 4% due June 2025 496 496 Series F senior notes, with a rate of 4½% due February 2026 396 396 Series G senior notes, with a rate of 3⅞% due April 2024 395 — Total senior notes 2,778 2,380 Credit facility revolver 174 209 2017 Credit facility term loan due May 2021 498 500 2015 Credit facility term loan due September 2020 498 497 Mortgage debt (non-recourse) and other, with an average interest rate of 8.8% and 3.4% at December 31, 2017 and 2016, respectively, maturing through February 2024 6 63 Total debt $ 3,954 $ 3,649
Mortgage Debt Issuances And Repayments	We have made the following mortgage debt repayments since January 2016: Maturity Transaction Date Property Rate Date Amount Repayments July 2017 Hilton Melbourne South Wharf 3.3 % 11/22/2017 $ (69 ) September 2016 Novotel and ibis Christchurch 3.6 % 2/18/2018 (17 ) April 2016 Hyatt Regency Reston 3.5 % 7/1/2016 (100 ) March 2016 ibis Wellington 3.7 % 2/18/2018 (11 ) February 2016 Novotel Wellington 5.7 % 2/18/2018 (9 )
Aggregate Debt Maturities	Aggregate debt maturities are as follows (in millions): As of December 31, 2017 2018 $ — 2019 — 2020 500 2021 978 2022 350 Thereafter 2,155 3,983 Deferred financing costs (27 ) Unamortized (discounts) premiums, net (3 ) Capital lease obligations 1 $ 3,954
Interest Expense	The following items are included in interest expense (in millions): Year ended December 31, 2017 2016 2015 (1) Interest expense $ 167 $ 154 $ 227 Amortization of debt premiums/discounts, net (2) (1 ) (1 ) (13 ) Amortization of deferred financing costs (6 ) (6 ) (8 ) Non-cash losses on debt extinguishments — — (11 ) Change in accrued interest (2 ) (3 ) 12 Interest paid (3) $ 158 $ 144 $ 207 ___________ (1) Interest expense and interest paid for 2015 includes cash prepayment premiums of approximately $30 million. (2) For 2015, this primarily represents the amortization of the debt discount on exchangeable senior debentures, which is considered non-cash interest expense. (3) Does not include capitalized interest of $1 million, $3 million and $5 million for 2017, 2016 and 2015, respectively.

Equity of Host Inc. and Capit34

Equity of Host Inc. and Capital of Host L.P. (Tables)	12 Months Ended
	Dec. 31, 2017
Equity [Abstract]
Common Dividends Declared Per Share	The table below presents the amount of common dividends declared per share and common distributions per unit as follows: Year ended December 31, 2017 2016 2015 Common stock $ .85 $ .85 $ .80 Common OP units .868 .868 .817

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Primary Components of Net Deferred Tax Asset	We have recorded a 100% valuation allowance of approximately $27 million against the deferred tax asset related to the net operating loss carryovers as of December 31, 2017 with respect to our hotel in Mexico. During 2016, we reversed the $3 million valuation allowance previously recorded against the deferred tax asset related to the net operating loss carryovers of our hotels in Canada. The net increase in valuation allowance for the year ending December 31, 2017 is approximately $5 million. The net decrease in valuation allowance for the year ending December 31, 2016 is approximately $1 million. The primary components of our net deferred tax assets are as follows (in millions): As of December 31, 2017 2016 Deferred tax assets Net operating loss and capital loss carryovers $ 34 $ 43 Alternative minimum tax and investment tax credits — 8 Property and equipment 3 4 Investments in domestic affiliates — 2 Deferred revenue and expenses 27 42 Foreign exchange net losses (AOCI) 12 12 Other — 2 Total gross deferred tax assets 76 113 Less: Valuation allowance (27 ) (22 ) Total deferred tax assets, net of valuation allowance $ 49 $ 91 Deferred tax liabilities Property and equipment — (11 ) Investments in domestic and foreign affiliates (8 ) (7 ) Other — (2 ) Total gross deferred tax liabilities (8 ) (20 ) Net deferred tax assets $ 41 $ 71
Income From Continuing Operations Before Income Taxes	Our U.S. and foreign income from continuing operations before income taxes was as follows (in millions): Year ended December 31, 2017 2016 2015 U.S. income $ 593 $ 763 $ 530 Foreign income 58 48 44 Total $ 651 $ 811 $ 574
Provision for Income Taxes from Continuing Operations	The provision for income taxes from continuing operations consists of (in millions): Year ended December 31, 2017 2016 2015 Current —Federal $ 17 $ — $ 2 —State 6 1 (1 ) —Foreign 19 12 3 42 13 4 Deferred —Federal 32 24 2 —State 4 6 — —Foreign 2 (3 ) 3 38 27 5 Income tax provision – continuing operations $ 80 $ 40 $ 9
Income Tax Provision Calculated at Statutory U.S. Federal Income Tax Rate and Actual Income Tax Provision Recorded	The differences between the income tax provision calculated at the statutory U.S. federal income tax rate of 35% (21% beginning with calendar year 2018) and the actual income tax provision recorded for continuing operations are as follows (in millions): Year ended December 31, 2017 2016 2015 Statutory federal income tax provision $ 228 $ 284 $ 204 Adjustment for nontaxable income of Host Inc. (190 ) (260 ) (203 ) State income tax provision, net 10 7 1 Provision for uncertain tax positions — — 1 Remeasurement of domestic net deferred tax assets 11 — — Foreign income tax provision 21 9 6 Income tax provision $ 80 $ 40 $ 9
Unrecognized Tax Benefits Reconciliation	A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in millions): 2017 2016 Balance at January 1 $ 11 $ 11 Balance at December 31 $ 11 $ 11

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2017
Leases [Abstract]
Future Minimum Annual Rental Commitments Required Under Non-Cancelable Operating Leases	The following table presents the future minimum annual rental commitments required under non-cancelable operating leases for which we are the lessee (in millions): As of December 31, 2017 2018 $ 42 2019 41 2020 39 2021 39 2022 37 Thereafter 1,289 Total minimum lease payments $ 1,487
Rent Expense	Rent expense is included in other property-level expenses and consists of (in millions): Year ended December 31, 2017 2016 2015 Minimum rentals on operating leases $ 46 $ 45 $ 46 Additional rentals based on sales 38 38 33 Less: sublease rentals (1 ) (2 ) (2 ) $ 83 $ 81 $ 77

Employee Stock Plans (Tables)

Employee Stock Plans (Tables)	12 Months Ended
	Dec. 31, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Schedule of Assumption used with Black Scholes Option to Determine the Fair Value of Award Granted	We value the TSR awards using the economic theory 2017 Award Grants NAREIT index Standard & Poor's index Selected Lodging Company index Grant date stock price $ 18.56 $ 18.56 $ 18.56 Volatility 25.2 % 25.2 % 25.2 % Beta 1.178 1.182 1.006 Risk-free rate - one year award 0.82 % 0.82 % 0.82 % Risk-free rate - two year award 1.20 % 1.20 % 1.20 % Risk-free rate - three year award 1.48 % 1.48 % 1.48 %
Schedule Payout for TSR Awards	The payout schedule for the TSR awards is as follows, with linear interpolation for points between the 30 th th TSR Percentile Ranking Payout (% of Maximum) At or above 75th percentile 100 % 50th percentile 50 30th percentile 25 Below 30th percentile 0
Summary of Status of Senior Executive Plans	The following table is a summary of the status of our senior executive plans for the three years ended December 31, 2017: Year ended December 31, 2017 2016 2015 Shares Fair Value Shares Fair Value Shares Fair Value (in millions) (per share) (in millions) (per share) (in millions) (per share) Balance, at beginning of year — $ — — $ — — $ — Granted 1.4 15 1.6 18 1.3 16 Vested (1) (0.5 ) 20 (0.6 ) 19 (0.4 ) 15 Forfeited/expired (0.2 ) 20 (1.0 ) 19 (0.9 ) 15 Balance, at end of year 0.7 14 — — — — Issued in calendar year (1) 0.3 19 0.2 15 0.5 24 ___________ (1) Shares that vest at December 31 of each year are issued to the employees in the first quarter of the following year, although the requisite service period is complete. Accordingly, the 0.3 million shares issued in 2017 include shares vested at December 31, 2016, after adjusting for shares withheld to meet employee tax requirements. The shares withheld for employee tax requirements were valued at $4.9 million, $2.4 million and $9.8 million for 2017, 2016 and 2015, respectively.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Fair Values of Certain Financial Liabilities and Other Financial Instruments	The fair value of certain financial liabilities is shown below (in millions): December 31, 2017 December 31, 2016 Carrying Amount Fair Value Carrying Amount Fair Value Financial liabilities Senior notes (Level 1) $ 2,778 $ 2,932 $ 2,380 $ 2,477 Credit facility (Level 2) 1,170 1,178 1,206 1,211 Mortgage debt and other, excluding capital leases (Level 5 5 62 62

Geographic and Business Segme39

Geographic and Business Segment Information (Tables)	12 Months Ended
	Dec. 31, 2017
Segment Reporting [Abstract]
Revenues and Long-Lived Assets by Geographical Area	The following table presents revenues and long-lived assets for each of the geographical areas in which we operate (in millions): 2017 2016 2015 Revenues Property and Equipment, net Revenues Property and Equipment, net Revenues Property and Equipment, net United States $ 5,260 $ 9,548 $ 5,259 $ 9,913 $ 5,129 $ 10,294 Australia 19 — 34 85 34 88 Brazil 22 59 34 63 30 53 Canada 59 71 54 71 58 66 Chile — — 9 — 25 44 Mexico 27 14 29 13 29 18 New Zealand — — 11 — 45 20 Total $ 5,387 $ 9,692 $ 5,430 $ 10,145 $ 5,350 $ 10,583

Quarterly Financial Data (una40

Quarterly Financial Data (unaudited) (Tables)	12 Months Ended
	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Data	2017 First Second Third Fourth Quarter Quarter Quarter Quarter (in millions, except per share/unit amounts) Host Hotels & Resorts, Inc.: Revenues $ 1,348 $ 1,441 $ 1,254 $ 1,344 Operating profit 171 244 127 134 Net income 161 212 105 93 Net income attributable to Host Hotels & Resorts, Inc. 158 210 104 92 Basic earnings per common share .21 .28 .14 .12 Diluted earnings per common share .21 .28 .14 .12 Host Hotels & Resorts, L.P. (1) Net income attributable to Host Hotels & Resorts, L.P. 160 212 106 93 Basic earnings per common unit .22 .29 .14 .13 Diluted earnings per common unit .22 .29 .14 .13 2016 First Second Third Fourth Quarter Quarter Quarter Quarter (in millions, except per share/unit amounts) Host Hotels & Resorts, Inc.: Revenues $ 1,339 $ 1,459 $ 1,295 $ 1,337 Operating profit 151 239 144 150 Net income 184 351 108 128 Net income attributable to Host Hotels & Resorts, Inc. 182 347 107 126 Basic earnings per common share .24 .47 .14 .17 Diluted earnings per common share .24 .47 .14 .17 Host Hotels & Resorts, L.P. (1) Net income attributable to Host Hotels & Resorts, L.P. 184 352 108 127 Basic earnings per common unit .25 .48 .15 .17 Diluted earnings per common unit .25 .48 .15 .17 ___________ (1) Other income statement line items not presented for Host L.P. are equal to the amounts presented for Host Inc.

Supplemental Schedule of Nonc41

Supplemental Schedule of Noncash Investing and Financing Activities (Host Hotels & Resorts, Inc) - Additional Information (Detail) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Other Significant Noncash Transactions [Line Items]
Redemptions of limited partner interests for common stock (shares)	0.3	0.6	0.1
Redemptions of limited partner interests for common stock	$ 6	$ 10	$ 3
2.5% Exchangeable Senior Debentures Due 2029
Other Significant Noncash Transactions [Line Items]
Exchangeable senior debentures, exchanged			$ 399
Debt interest rate			2.50%
Debt converted into shares of Host Inc. common stock			32

Supplemental Schedule of Nonc42

Supplemental Schedule of Noncash Investing and Financing Activities (HOST HOTELS & RESORTS, L.P.) - Additional Information (Detail) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Other Significant Noncash Transactions [Line Items]
Redemptions of limited partner interests for common stock	$ 6	$ 10	$ 3
Redemptions of limited partner interests for common stock (shares)	0.3	0.6	0.1
2.5% Exchangeable Senior Debentures Due 2029
Other Significant Noncash Transactions [Line Items]
Exchangeable senior debentures, exchanged			$ 399
Debt interest rate			2.50%
Debt converted into shares of Host Inc. common stock			32
HOST HOTELS & RESORTS L.P.
Other Significant Noncash Transactions [Line Items]
Redemptions of limited partner interests for common stock	$ 6	$ 10	$ 3
Redemptions of limited partner interests for common stock (shares)	0.3	0.6	0.1
HOST HOTELS & RESORTS L.P. | 2.5% Exchangeable Senior Debentures Due 2029
Other Significant Noncash Transactions [Line Items]
Exchangeable senior debentures, exchanged			$ 399
Debt interest rate			2.50%
Debt converted into shares of Host Inc. common stock			32
Common OP unit issuances (units)			31.3

Summary of Significant Accoun43

Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017USD ($)HotelFundPropertyEntityContractGroundLease	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Significant Accounting Policies [Line Items]
Number of hotels | Hotel		94
Advances to and investments in affiliates		$ (327,000,000)	$ (286,000,000)
Percentage of property revenue allocated for renewal and replacement capital expenditures		5.00%
Number of impaired assets | Property		1
Impairment charges			0	$ 0
Number of majority-owned partnerships that have third-party, non-controlling ownership interests that have been consolidated | Entity		3
Non-controlling interests—other consolidated partnerships		$ 29,000,000	39,000,000
Number of majority-owned partnerships that have third-party, non-controlling ownership interests with finite lives | Entity		1
Majority-owned partnerships with mandatorily redeemable non-controlling interests, termination year		2,095
Net income		$ 7,000,000	9,000,000	7,000,000
Other-than-temporary impairment		$ 0	0	0
Corporate income tax rate		35.00%
Percentage greater than threshold of income tax examination minimum likelihood of tax benefits being realized upon settlement		50.00%
Net gain related to sale of assets, previously recognized in foreign currency translation and other comprehensive income (loss) of unconsolidated affiliates, reclassified		$ (14,000,000)	(17,000,000)	(3,000,000)
Stock-based employee compensation plans | Contract		2
Exposure risk related for derivative contracts		$ 0	12,000,000
Number of ground leases | Hotel		26
Restricted cash included with cash and cash equivalents on the consolidated statement of cash flows		$ 1,000,000	2,000,000	15,000,000
ASU 2016-02
Significant Accounting Policies [Line Items]
Number of ground leases | GroundLease		26
Percentage of operating lease payments		85.00%
ASU 2016-18 | New Accounting Pronouncement, Early Adoption, Effect
Significant Accounting Policies [Line Items]
Restricted cash included with cash and cash equivalents on the consolidated statement of cash flows		$ 196,000,000	172,000,000	156,000,000
Asset | ASU 2016-02 | Minimum
Significant Accounting Policies [Line Items]
Right of use asset and operating lease liability		400,000,000
Asset | ASU 2016-02 | Maximum
Significant Accounting Policies [Line Items]
Right of use asset and operating lease liability		500,000,000
Liability | ASU 2016-02 | Minimum
Significant Accounting Policies [Line Items]
Right of use asset and operating lease liability		400,000,000
Liability | ASU 2016-02 | Maximum
Significant Accounting Policies [Line Items]
Right of use asset and operating lease liability		$ 500,000,000
RSU Awards | Vesting over one-year Period
Significant Accounting Policies [Line Items]
Equity award vesting period		1 year
RSU Awards | Vesting over two-year Period
Significant Accounting Policies [Line Items]
Equity award vesting period		2 years
RSU Awards | Vesting over three-year Period
Significant Accounting Policies [Line Items]
Equity award vesting period		3 years
Hilton Melbourne South Wharf
Significant Accounting Policies [Line Items]
Net gain related to sale of assets, previously recognized in foreign currency translation and other comprehensive income (loss) of unconsolidated affiliates, reclassified		$ (14,000,000)
2 Hotels in Chile and 4 Hotels in New Zealand
Significant Accounting Policies [Line Items]
Net gain related to sale of assets, previously recognized in foreign currency translation and other comprehensive income (loss) of unconsolidated affiliates, reclassified			$ (17,000,000)
Scenario Forecast
Significant Accounting Policies [Line Items]
Corporate income tax rate	21.00%
W New York
Significant Accounting Policies [Line Items]
Impairment charges		$ 43,000,000
Property, Plant and Equipment, Other Types
Significant Accounting Policies [Line Items]
Estimated useful lives		3 years
Houston Airport Marriott at George Bush Intercontinental | Variable Interest Entities
Significant Accounting Policies [Line Items]
Total assets of VIE		$ 53,000,000
Liabilities of VIE		$ 4,000,000
Houston Airport Marriott at George Bush Intercontinental | General Partner
Significant Accounting Policies [Line Items]
General partner and limited partner interest		85.00%
Philadelphia Marriott Downtown | Variable Interest Entities Not Primary Beneficiary
Significant Accounting Policies [Line Items]
Advances to and investments in affiliates		$ (6,000,000)
Philadelphia Marriott Downtown | Limited Partnership Interests Of Parent Company Ownership
Significant Accounting Policies [Line Items]
General partner and limited partner interest		11.00%
European Joint Venture
Significant Accounting Policies [Line Items]
Number of hotels | Hotel		11
Number of funds | Fund		2
European Joint Venture | Minimum
Significant Accounting Policies [Line Items]
Investment ownership percentage		32.10%	32.10%
European Joint Venture | Maximum
Significant Accounting Policies [Line Items]
Investment ownership percentage		33.40%	33.40%
European Joint Venture | Fund I
Significant Accounting Policies [Line Items]
Investment ownership percentage		32.10%
Number of hotels | Hotel		3
European Joint Venture | Fund II
Significant Accounting Policies [Line Items]
Investment ownership percentage		33.40%
Number of hotels | Hotel		8
HOST HOTELS & RESORTS, INC.
Significant Accounting Policies [Line Items]
Percentage of the common OP units		99.00%
HOST HOTELS & RESORTS, INC. | General Partner
Significant Accounting Policies [Line Items]
Percentage of the common OP units		99.00%
HOST HOTELS & RESORTS L.P.
Significant Accounting Policies [Line Items]
Advances to and investments in affiliates		$ (327,000,000)	$ (286,000,000)
OP units conversion basis		One OP unit may be exchanged for 1.021494 shares of Host Inc. common stock) valued at the market price of Host Inc.
Shares issuable upon conversion of one OP unit		1.021494	1.021494
Net gain related to sale of assets, previously recognized in foreign currency translation and other comprehensive income (loss) of unconsolidated affiliates, reclassified		$ (14,000,000)	$ (17,000,000)	(3,000,000)
Restricted cash included with cash and cash equivalents on the consolidated statement of cash flows		$ 1,000,000	$ 2,000,000	$ 15,000,000

Consolidated Portfolio of Hotel

Consolidated Portfolio of Hotels by Location (Detail)	Dec. 31, 2017Hotel
Real Estate Properties [Line Items]
Hotels	94
European Joint Venture
Real Estate Properties [Line Items]
Hotels	11
United States
Real Estate Properties [Line Items]
Hotels	88
Brazil
Real Estate Properties [Line Items]
Hotels	3
Canada
Real Estate Properties [Line Items]
Hotels	2
Mexico
Real Estate Properties [Line Items]
Hotels	1
Belgium | European Joint Venture
Real Estate Properties [Line Items]
Hotels	1
France | European Joint Venture
Real Estate Properties [Line Items]
Hotels	3
Germany | European Joint Venture
Real Estate Properties [Line Items]
Hotels	1
Spain | European Joint Venture
Real Estate Properties [Line Items]
Hotels	2
Sweden | European Joint Venture
Real Estate Properties [Line Items]
Hotels	1
The Netherlands | European Joint Venture
Real Estate Properties [Line Items]
Hotels	2
United Kingdom | European Joint Venture
Real Estate Properties [Line Items]
Hotels	1

Historical Cost and Redemption

Historical Cost and Redemption Values for Non-Controlling Interests (Detail) $ / shares in Units, shares in Millions, $ in Millions		Dec. 31, 2017USD ($)$ / sharesshares	Dec. 31, 2016USD ($)$ / sharesshares
Shares Subject To Mandatory Redemption By Settlement Terms [Line Items]
Book value (millions)		$ 167	$ 165
HOST HOTELS & RESORTS L.P.
Shares Subject To Mandatory Redemption By Settlement Terms [Line Items]
OP units outstanding (millions) | shares		8.2	8.6
Market price per Host Inc. common share | $ / shares		$ 19.85	$ 18.84
Shares issuable upon conversion of one OP unit		1.021494	1.021494
Redemption value (millions)		$ 167	$ 165
Historical cost (millions)		80	84
Book value (millions)	[1]	$ 167	$ 165
[1]	The book value recorded is equal to the greater of the redemption value or the historical cost.

Components of Total Accumulated

Components of Total Accumulated Other Comprehensive Income in Balance Sheets (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Equity [Abstract]
Gain on foreign currency forward contracts	$ 26	$ 40
Loss on interest rate swap cash flow hedges	(5)	(5)
Foreign currency translation	(83)	(121)
Other comprehensive loss attributable to non-controlling interests	2	3
Total accumulated other comprehensive loss	$ (60)	$ (83)

Host Inc. Earnings (Loss) Per C

Host Inc. Earnings (Loss) Per Common Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Earnings Per Share [Abstract]
NET INCOME		$ 571	$ 771	$ 565
Less: Net (income) loss attributable to non-controlling interests		(7)	(9)	(7)
NET INCOME ATTRIBUTABLE TO REPORTING ENTITY		$ 564	$ 762	$ 558
Basic weighted average shares outstanding		738.6	743	752.4
Assuming distribution of common shares granted under the comprehensive stock plans, less shares assumed purchased at market		0.5	0.7	0.5
Diluted weighted average shares/units outstanding	[1]	739.1	743.7	752.9
Basic earnings per common share		$ 0.76	$ 1.03	$ 0.74
Diluted earnings per common share		$ 0.76	$ 1.02	$ 0.74
[1]	There were approximately 25 million potentially dilutive shares (on a weighted average basis) for the year ended December 31, 2015 related to our exchangeable senior debentures, which were anti-dilutive for the period. The exchangeable senior debentures were redeemed in 2015 in exchange for 32 million common shares of Host Inc.

Host Inc. Earnings (Loss) Per48

Host Inc. Earnings (Loss) Per Common Share (Parenthetical) (Detail) - HOST HOTELS & RESORTS, INC. shares in Millions	12 Months Ended
	Dec. 31, 2015shares
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive shares which were not included in the computation of diluted EPS	25
Common shares issued in exchange of senior debentures	32

Host LP Earnings (Loss) Per Com

Host LP Earnings (Loss) Per Common Unit (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended																12 Months Ended
		Dec. 31, 2017	[2]	Sep. 30, 2017	[2]	Jun. 30, 2017	[2]	Mar. 31, 2017	[2]	Dec. 31, 2016	[2]	Sep. 30, 2016	[2]	Jun. 30, 2016	[2]	Mar. 31, 2016	[2]	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Earnings Per Share Diluted [Line Items]
NET INCOME																		$ 571	$ 771	$ 565
Less: Net (income) loss attributable to non-controlling interests																		(7)	(9)	(7)
NET INCOME ATTRIBUTABLE TO REPORTING ENTITY																		$ 564	$ 762	$ 558
Basic weighted average shares outstanding																		738.6	743	752.4
Assuming distribution of common units to support shares granted under the comprehensive stock plans, less shares assumed purchased at market																		0.5	0.7	0.5
Diluted weighted average shares/units outstanding	[1]																	739.1	743.7	752.9
Basic earnings per common share																		$ 0.76	$ 1.03	$ 0.74
Diluted earnings per common share																		$ 0.76	$ 1.02	$ 0.74
HOST HOTELS & RESORTS L.P.
Earnings Per Share Diluted [Line Items]
NET INCOME																		$ 571	$ 771	$ 565
NET INCOME ATTRIBUTABLE TO REPORTING ENTITY		$ 93		$ 106		$ 212		$ 160		$ 127		$ 108		$ 352		$ 184		$ 571	$ 771	$ 565
Basic weighted average shares outstanding																		731.5	736.3	745.7
Assuming distribution of common units to support shares granted under the comprehensive stock plans, less shares assumed purchased at market																		0.5	0.6	0.5
Diluted weighted average shares/units outstanding	[3]																	732	736.9	746.2
Basic earnings per common share		$ 0.13		$ 0.14		$ 0.29		$ 0.22		$ 0.17		$ 0.15		$ 0.48		$ 0.25		$ 0.78	$ 1.05	$ 0.76
Diluted earnings per common share		$ 0.13		$ 0.14		$ 0.29		$ 0.22		$ 0.17		$ 0.15		$ 0.48		$ 0.25		$ 0.78	$ 1.05	$ 0.76
[1]	There were approximately 25 million potentially dilutive shares (on a weighted average basis) for the year ended December 31, 2015 related to our exchangeable senior debentures, which were anti-dilutive for the period. The exchangeable senior debentures were redeemed in 2015 in exchange for 32 million common shares of Host Inc.
[2]	Other income statement line items not presented for Host L.P. are equal to the amounts presented for Host Inc.
[3]	There were approximately 25 million potentially dilutive units (on a weighted average basis) for the year ended December 31, 2015 related to our exchangeable senior debentures, which were anti-dilutive for the period. The exchangeable senior debentures were redeemed in 2015 and Host L.P. issued 31.3 million units to Host Inc. in connection with such redemption.

Host LP Earnings (Loss) Per C50

Host LP Earnings (Loss) Per Common Unit (Parenthetical) (Detail) - HOST HOTELS & RESORTS L.P. shares in Millions	12 Months Ended
	Dec. 31, 2015shares
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive shares which were not included in the computation of diluted EPS	25
Units issued by Host L.P.	31.3

Summary of Property and Equipme

Summary of Property and Equipment (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property Plant And Equipment [Abstract]
Land and land improvements	$ 1,934	$ 2,047
Buildings and leasehold improvements	13,529	13,483
Furniture and equipment	2,357	2,377
Construction in progress	106	86
Property, Plant and Equipment, Gross, Total	17,926	17,993
Less accumulated depreciation and amortization	(8,234)	(7,848)
Property and equipment, net	$ 9,692	$ 10,145	$ 10,583

Property and Equipment - Additi

Property and Equipment - Additional information (Detail) $ in Millions	Dec. 31, 2017USD ($)
Property Plant And Equipment [Abstract]
Cost of real estate for federal income tax purposes	$ 10,698

Summary of Investments in Affil

Summary of Investments in Affiliates (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2017		Dec. 31, 2016
Schedule Of Investments [Line Items]
Our Investment		$ 327		$ 286
Our Portion of Debt		472		392
Total Debt		1,496		1,215
Distributions received	[1]	49		52
European Joint Venture
Schedule Of Investments [Line Items]
Our Investment		271		227
Our Portion of Debt		316		236
Total Debt		1,029		744
Distributions received	[1]	$ 31	[2]	$ 18
Assets		Eleven hotels in Europe		Ten hotels in Europe
European Joint Venture | Lower Limit
Schedule Of Investments [Line Items]
Investment ownership percentage		32.10%		32.10%
European Joint Venture | Upper Limit
Schedule Of Investments [Line Items]
Investment ownership percentage		33.40%		33.40%
Asia/Pacific Joint Venture
Schedule Of Investments [Line Items]
Investment ownership percentage		25.00%		25.00%
Our Investment		$ 15		$ 17
Distributions received	[1],[3]			$ 9
Assets		A 36% interest in seven hotels in India		A 36% interest in five operating hotels and two hotels in final stages of completion in India
Maui JV
Schedule Of Investments [Line Items]
Investment ownership percentage		67.00%		67.00%
Our Investment		$ 83		$ 81
Our Portion of Debt		27		27
Total Debt		41		$ 41
Distributions received	[1]	$ 7
Assets		131-unit vacation ownership project in Maui, HI		131-unit vacation ownership project in Maui, HI
Hyatt Place JV
Schedule Of Investments [Line Items]
Investment ownership percentage		50.00%		50.00%
Our Investment		$ (13)		$ (12)
Our Portion of Debt		30		30
Total Debt		60		60
Distributions received	[1]	$ 3		$ 17	[4]
Assets		One hotel in Nashville, TN		One hotel in Nashville, TN
Harbor Beach JV
Schedule Of Investments [Line Items]
Investment ownership percentage		49.90%		49.90%
Our Investment		$ (28)		$ (24)
Our Portion of Debt		75		75
Total Debt		149		149
Distributions received	[1]	$ 7		$ 6
Assets		One hotel in Fort Lauderdale, FL		One hotel in Fort Lauderdale, FL
Philadelphia Marriott Downtown JV
Schedule Of Investments [Line Items]
Investment ownership percentage		11.00%		11.00%
Our Investment		$ (6)		$ (6)
Our Portion of Debt		24		24
Total Debt		217		221
Distributions received	[1]	$ 1		$ 2
Assets		One hotel in Philadelphia, PA		One hotel in Philadelphia, PA
Fifth Wall Ventures
Schedule Of Investments [Line Items]
Our Investment		$ 5		$ 3
Assets		Real estate industry technology investment		Real estate industry technology investment
[1]	Distributions received were funded by cash from operations unless otherwise noted.
[2]	Distributions received from Euro JV in 2017 include $9 million of loan refinancing proceeds.
[3]	Distributions received from the Asia/Pacific JV in 2016 were primarily related to the sale of the Four Points by Sheraton Perth in 2015.
[4]	Distributions received from the Hyatt Place JV in 2016 include $14 million of loan refinancing proceeds.

Summary of Investments in Aff54

Summary of Investments in Affiliates (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
European Joint Venture
Schedule Of Investments [Line Items]
Loan refinancing proceeds	$ 9
Hyatt Place JV
Schedule Of Investments [Line Items]
Loan refinancing proceeds		$ 14

Investments in Affiliates - Add

Investments in Affiliates - Additional Information (Detail) € in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2017USD ($)HotelRoom	Dec. 31, 2017EUR (€)	Dec. 31, 2016USD ($)	Dec. 31, 2014USD ($)	Dec. 31, 2017EUR (€)HotelRoom
Investments In And Advances To Affiliates [Line Items]
Total assets	$ 2,628		$ 2,285
Number of hotels | Hotel	94				94
Total Debt	$ 1,496		1,215
Mortgage debt	$ 6		63
Mortgages debt and other
Investments In And Advances To Affiliates [Line Items]
Maturity period of the loan	2024-02	2024-02
European Joint Venture
Investments In And Advances To Affiliates [Line Items]
Total assets | €					€ 1,700
Management fees	$ 8		8	$ 11
Number of extension period	two one-year extensions	two one-year extensions
Joint venture agreement expiration period	2021-06	2021-06
Number of hotels | Hotel	11				11
Total Debt	$ 1,029		$ 744
European Joint Venture | Hilton Amsterdam Airport Schiphol | Amsterdam
Investments In And Advances To Affiliates [Line Items]
Number of rooms | Room	433				433
Consideration paid for acquisition | €		€ 148
New mortgage debt | €		€ 81.4
Mortgage loan, maturity date	Dec. 13, 2022	Dec. 13, 2022
European Joint Venture | Hilton Amsterdam Airport Schiphol | Amsterdam | HOST HOTELS & RESORTS, INC.
Investments In And Advances To Affiliates [Line Items]
Partners contribution	$ 27	€ 23
European Joint Venture | Fund I
Investments In And Advances To Affiliates [Line Items]
Investment ownership percentage	32.10%				32.10%
Number of hotels | Hotel	3				3
European Joint Venture | Fund II
Investments In And Advances To Affiliates [Line Items]
Investment ownership percentage	33.40%				33.40%
Number of hotels | Hotel	8				8
Asia/Pacific Joint Venture
Investments In And Advances To Affiliates [Line Items]
Investment ownership percentage	25.00%		25.00%		25.00%
Asia/Pacific Joint Venture | India
Investments In And Advances To Affiliates [Line Items]
Investment ownership percentage	36.00%				36.00%
Partners contribution	$ 104
Asia/Pacific Joint Venture | HOST HOTELS & RESORTS, INC. | India
Investments In And Advances To Affiliates [Line Items]
Partners contribution	$ 26
Asia/Pacific Joint Venture | Bangalore | India
Investments In And Advances To Affiliates [Line Items]
Number of hotels | Hotel	2				2
Asia/Pacific Joint Venture | Chennai | India
Investments In And Advances To Affiliates [Line Items]
Number of hotels | Hotel	3				3
Asia/Pacific Joint Venture | New Delhi | India
Investments In And Advances To Affiliates [Line Items]
Number of hotels | Hotel	2				2
Maui JV
Investments In And Advances To Affiliates [Line Items]
Investment ownership percentage	67.00%		67.00%		67.00%
Number of rooms | Room	131				131
Total Debt	$ 41		$ 41
Maui JV | Not Guaranteed
Investments In And Advances To Affiliates [Line Items]
Total Debt	$ 41
Hyatt Place Nashville Downtown
Investments In And Advances To Affiliates [Line Items]
Investment ownership percentage	50.00%				50.00%
Mortgage debt	$ 60
Maturity period of the loan	2019-08	2019-08
Mortgage loan, base rate description	1-month USD LIBOR plus	1-month USD LIBOR plus
Mortgage loan, interest rate	4.60%				4.60%
Hyatt Place Nashville Downtown | Mortgages debt and other
Investments In And Advances To Affiliates [Line Items]
Number of extension period	two 12-month extension options	two 12-month extension options
Hyatt Place Nashville Downtown | 1-month USD LIBOR
Investments In And Advances To Affiliates [Line Items]
Mortgage loan, basis spread on variable rate	3.00%	3.00%
Hyatt Place Nashville Downtown | Tennessee
Investments In And Advances To Affiliates [Line Items]
Number of rooms | Room	255				255
Harbor Beach JV
Investments In And Advances To Affiliates [Line Items]
Investment ownership percentage	49.90%		49.90%		49.90%
Total Debt	$ 149		$ 149
Harbor Beach JV | Mortgage Loan
Investments In And Advances To Affiliates [Line Items]
Mortgage loan, maturity date	Jan. 1, 2024	Jan. 1, 2024
Mortgage debt	$ 149
Mortgage loan, interest rate	4.75%				4.75%
Mortgage loan, principal payment terms	No principal payments are due until the loan maturity date of January 1, 2024.	No principal payments are due until the loan maturity date of January 1, 2024.
Harbor Beach JV | Florida
Investments In And Advances To Affiliates [Line Items]
Number of rooms | Room	650				650

Combined Summarized Balance She

Combined Summarized Balance Sheet Information (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Investments In And Advances To Affiliates Schedule Of Investments [Abstract]
Property and equipment, net	$ 1,945	$ 1,634
Timeshare inventory	117	137
Other assets	566	514
Total assets	2,628	2,285
Debt	1,496	1,215
Other liabilities	330	319
Equity	802	751
Total liabilities and equity	$ 2,628	$ 2,285

Combined Summarized Operating R

Combined Summarized Operating Results for Affiliates (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Investments In And Advances To Affiliates Schedule Of Investments [Abstract]
Total revenues	$ 621	$ 599	$ 769
Expenses	(436)	(437)	(558)
Depreciation and amortization	(78)	(73)	(84)
Operating profit	107	89	127
Interest income	6	5	3
Interest expense	(56)	(57)	(80)
Other gain (loss)	4	(2)	141
Net income	$ 61	$ 35	$ 191

Debt (Detail)

Debt (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Senior notes	$ 2,778	$ 2,380
Credit facility	1,170	1,206
Mortgage debt (non-recourse) and other, with an average interest rate of 8.8% and 3.4% at December 31, 2017 and 2016, respectively, maturing through February 2024	6	63
Total debt	3,954	3,649
Series Z senior notes 6% due October 2021
Debt Instrument [Line Items]
Senior notes	298	297
Series B senior notes 5.25% due March 2022
Debt Instrument [Line Items]
Senior notes	348	347
Series C senior notes 4.75% due March 2023
Debt Instrument [Line Items]
Senior notes	447	446
Series D senior notes 3.75% due October 2023
Debt Instrument [Line Items]
Senior notes	398	398
Series E senior notes 4% due June 2025
Debt Instrument [Line Items]
Senior notes	496	496
Series G senior notes 3.875% due April 2024
Debt Instrument [Line Items]
Senior notes	395
Series F senior notes 4.5% due February 2026
Debt Instrument [Line Items]
Senior notes	396	396
Term Loan due May 2021
Debt Instrument [Line Items]
Credit facility	498	500
Term Loan due September 2020
Debt Instrument [Line Items]
Credit facility	498	497
Revolver
Debt Instrument [Line Items]
Credit facility	$ 174	$ 209

Debt (Parenthetical) (Detail)

Debt (Parenthetical) (Detail) - Mortgages debt and other	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Average interest rate	8.80%	3.40%
Debt instrument maturity period	2024-02

Debt - Additional Information (

Debt - Additional Information (Detail)	Mar. 20, 2017USD ($)	Dec. 29, 2015USD ($)	Sep. 10, 2015USD ($)	Dec. 31, 2017USD ($)Entity	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	May 31, 2017USD ($)
Debt Instrument [Line Items]
Repayment of debt				$ 395,000,000	$ 816,000,000	$ 725,000,000
Aggregate borrowing capacity							$ 1,000,000,000
Additional borrowing capacity				500,000,000
Credit facility				1,170,000,000	1,206,000,000
Draws on credit facility				340,000,000	734,000,000	845,000,000
Cash and cash equivalents				$ 913,000,000	372,000,000	221,000,000
Assets that are secured by mortgage debt | Entity				0
Interest Expense
Debt Instrument [Line Items]
Loss on extinguishment				$ 1,000,000	0	$ 41,000,000
Foreign Currency Borrowings
Debt Instrument [Line Items]
Aggregate borrowing capacity				500,000,000
Swingline Loans
Debt Instrument [Line Items]
Aggregate borrowing capacity				$ 100,000,000
Lower Limit | Covenant Requiring Guarantees
Debt Instrument [Line Items]
Leverage ratio				6
Revolver
Debt Instrument [Line Items]
Repayment of debt	$ 250,000,000
Credit facility maturity date				May 31, 2021
Credit facility				$ 174,000,000	209,000,000
Renewal period of credit facility				Two additional six-month terms
Line of credit interest terms				We pay interest on revolver borrowings under the credit facility at floating rates equal to LIBOR plus a margin
Facility commitment fee				0.20%
Line of credit facility remaining borrowing capacity				$ 822,000,000
Revolver | Upper Limit | LIBOR | Investment grade
Debt Instrument [Line Items]
Basis point addition				1.55%
Facility commitment fee				0.30%
Revolver | Lower Limit | LIBOR | Investment grade
Debt Instrument [Line Items]
Basis point addition				0.825%
Facility commitment fee				0.125%
Letter of Credit
Debt Instrument [Line Items]
Aggregate borrowing capacity				$ 100,000,000
Term Loan due May 2021
Debt Instrument [Line Items]
Credit facility maturity date				May 31, 2021
Credit facility				$ 500,000,000
Renewal period of credit facility				One additional year
Term loan, interest rate				2.70%
Term Loan due May 2021 | LIBOR
Debt Instrument [Line Items]
Basis point addition				1.10%
Revolving Credit Facility
Debt Instrument [Line Items]
Net proceeds from (repayment of) credit facility				$ (55,000,000)	(82,000,000)
Revolving Credit Facility | LIBOR
Debt Instrument [Line Items]
Basis point addition				1.00%
Term Loan due September 2020
Debt Instrument [Line Items]
Aggregate borrowing capacity			$ 500,000,000
Debt Instrument, term				5 years
Term loan, interest rate				2.70%
Draws on credit facility		$ 200,000,000	$ 300,000,000
Term Loan due September 2020 | LIBOR
Debt Instrument [Line Items]
Basis point addition				1.10%
Series G senior notes 3.875% due April 2024
Debt Instrument [Line Items]
Face amount of debt	$ 400,000,000
Debt interest rate	3.875%
Proceed from issuance of note	$ 395,000,000
Frequency of interest payable				Interest is payable semi-annually
Date of first payment	Nov. 15, 2017
Maturity date	Apr. 30, 2024
Covenant Requirement | Credit facility
Debt Instrument [Line Items]
Debt covenant compliance				As of December 31, 2017, we are in compliance with the financial covenants under our credit facility.
Debt instrument covenant description				Additionally, total debt used in the calculation of our leverage ratio is based on a “net debt” concept, under which cash and cash equivalents in excess of $100 million are deducted from our total debt balance.
Covenant Requirement | Credit facility | Upper Limit
Debt Instrument [Line Items]
Leverage ratio				7.25
Covenant Requirement | Credit facility | Lower Limit
Debt Instrument [Line Items]
Unsecured interest coverage ratio				1.75%
Fixed charge coverage ratio				1.25%
Cash and cash equivalents				$ 100,000,000
Debt Covenant | Less Restrictive Covenant
Debt Instrument [Line Items]
Leverage ratio				6
Senior Notes
Debt Instrument [Line Items]
Face amount of debt				$ 2,800,000,000	2,400,000,000
Unamortized discount				$ 22,000,000	$ 20,000,000
Debt covenant compliance				As of December 31, 2017, we are in compliance with all of these covenants.
Senior Notes | Upper Limit
Debt Instrument [Line Items]
Debt repurchase authorized amount				$ 250,000,000

Mortgage Debt Issuances and Rep

Mortgage Debt Issuances and Repayments (Detail) - USD ($) $ in Millions	1 Months Ended					12 Months Ended
	Jul. 31, 2017	Sep. 30, 2016	Apr. 30, 2016	Mar. 31, 2016	Feb. 29, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Mortgage repayment						$ (69)	$ (137)	$ (35)
Hilton Melbourne South Wharf
Debt Instrument [Line Items]
Rate	3.30%
Maturity date	Nov. 22, 2017
Mortgage repayment	$ (69)
Novotel and ibis Christchurch
Debt Instrument [Line Items]
Rate		3.60%
Maturity date		Feb. 18, 2018
Mortgage repayment		$ (17)
Hyatt Regency Reston
Debt Instrument [Line Items]
Rate			3.50%
Maturity date			Jul. 1, 2016
Mortgage repayment			$ (100)
Ibis Wellington
Debt Instrument [Line Items]
Rate				3.70%
Maturity date				Feb. 18, 2018
Mortgage repayment				$ (11)
Novotel Wellington
Debt Instrument [Line Items]
Rate					5.70%
Maturity date					Feb. 18, 2018
Mortgage repayment					$ (9)

Aggregate Debt Maturities (Deta

Aggregate Debt Maturities (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Debt Disclosure [Abstract]
2,020	$ 500
2,021	978
2,022	350
Thereafter	2,155
Debt principal outstanding	3,983
Deferred financing costs	(27)
Unamortized (discounts) premiums, net	(3)
Capital lease obligations	1
Total debt	$ 3,954	$ 3,649

Interest Expense (Detail)

Interest Expense (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Debt Disclosure [Abstract]
Interest expense		$ 167	$ 154	$ 227	[1]
Amortization of debt premiums/discounts, net	[2]	(1)	(1)	(13)	[1]
Amortization of deferred financing costs		(6)	(6)	(8)	[1]
Non-cash losses on debt extinguishments	[1]			(11)
Change in accrued interest		(2)	(3)	12	[1]
Interest paid	[3]	$ 158	$ 144	$ 207	[1]
[1]	Interest expense and interest paid for 2015 includes cash prepayment premiums of approximately $30 million.
[2]	For 2015, this primarily represents the amortization of the debt discount on exchangeable senior debentures, which is considered non-cash interest expense.
[3]	Does not include capitalized interest of $1 million, $3 million and $5 million for 2017, 2016 and 2015, respectively.

Interest Expense (Parenthetical

Interest Expense (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Debt Disclosure [Abstract]
Prepayment premiums			$ 30
Capitalized interest	$ 1	$ 3	$ 5

Equity of Host Inc. and Capit65

Equity of Host Inc. and Capital of Host L.P. - Additional Information (Detail) $ / shares in Units, $ in Millions	Feb. 21, 2018$ / shares	Dec. 31, 2017$ / sharesshares	Dec. 31, 2016USD ($)$ / sharesshares	Dec. 31, 2015$ / shares	Feb. 21, 2017USD ($)
Stockholders Equity Note [Line Items]
Common stock, shares authorized		1,050,000,000	1,050,000,000
Common stock, par value | $ / shares		$ 0.01	$ 0.01
Common stock, shares outstanding		739,100,000	737,800,000
Dividend policy		The amount of any future dividends will be determined by Host Inc.’s Board of Directors.
Dividends taxable as ordinary income to stockholders		88.00%	66.00%
Dividends taxable as qualified income to stockholders		1.00%	4.00%
Dividends taxable as unrecaptured Section 1250 gain		3.00%	6.00%
Capital Gains Distribution Percentage		8.00%	24.00%
Dividend per share, declared | $ / shares		$ 0.85	$ 0.85	$ 0.80
Lower Limit
Stockholders Equity Note [Line Items]
Percentage of annual taxable income Host Inc is required to distribute		90.00%
HOST HOTELS & RESORTS, INC.
Stockholders Equity Note [Line Items]
Common stock, shares authorized		1,050,000,000	1,050,000,000
Common stock, par value | $ / shares		$ 0.01	$ 0.01
Common stock, shares outstanding		739,100,000	737,800,000
Preferred stock, shares authorized		50,000,000
Preferred stock, no par value | $ / shares
Preferred stock, shares outstanding		0	0
Percentage of the common OP units		99.00%
Common stock repurchase, shares		0	13,800,000
Common stock repurchase, average price per share | $ / shares			$ 15.79
Common stock repurchase, value | $			$ 218
HOST HOTELS & RESORTS, INC. | Subsequent Event
Stockholders Equity Note [Line Items]
Dividend declaration date	Feb. 21, 2018
Dividend per share, declared | $ / shares	$ 0.20
Dividend payable date	Apr. 16, 2018
Dividend record date	Mar. 29, 2018
HOST HOTELS & RESORTS, INC. | Upper Limit
Stockholders Equity Note [Line Items]
Common stock repurchase, authorized amount | $					$ 500
HOST HOTELS & RESORTS L.P.
Stockholders Equity Note [Line Items]
Percentage of the common OP Units		1.00%
Shares issuable upon conversion of one OP unit		1.021494	1.021494
Common OP units, outstanding		731,700,000	730,800,000
HOST HOTELS & RESORTS L.P. | Limited Partner
Stockholders Equity Note [Line Items]
Common OP units, outstanding		723,500,000	722,200,000

Common Dividends Declared Per S

Common Dividends Declared Per Share (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Equity [Abstract]
Common stock	$ 0.85	$ 0.85	$ 0.80
Common OP units	$ 0.868	$ 0.868	$ 0.817

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Taxes [Line Items]
Number of subsequent years we may not able to qualify as REIT if failed to qualify for taxation as a REIT in any taxable year		4 years
Effective income tax rate		35.00%
Increase to deferred income tax provision due to remeasurement of domestic deferred tax assets		$ 11
Valuation allowance		27	$ 22
Net (decrease) and increase in valuation allowance		5	(1)
Deferred tax asset operating loss carryforwards		34	43
Total deferred tax assets, net of valuation allowance		49	91
Cash paid for income taxes, net of refunds received		40	15	$ 9
Recognized material interest or penalties		$ 0	0	$ 0
Lower Limit
Income Taxes [Line Items]
Open tax year by major tax jurisdiction		2,014
Upper Limit
Income Taxes [Line Items]
Open tax year by major tax jurisdiction		2,017
Foreign
Income Taxes [Line Items]
Valuation allowance		$ 27
Net operating loss and capital loss carryovers		116
Deferred tax asset operating loss carryforwards		$ 34
Net operating loss carryover expiration date		Our foreign net operating loss carryovers expire through 2037, and our foreign capital loss carryovers have no expiration period.
Net operating loss carryover expiration year		2,037
Mexico
Income Taxes [Line Items]
Valuation allowance		$ 27
Canada
Income Taxes [Line Items]
Reversal of valuation allowance recorded against the deferred tax asset			$ 3
Scenario Forecast
Income Taxes [Line Items]
Effective income tax rate	21.00%
Lower Limit
Income Taxes [Line Items]
Percentage of annual taxable income Host Inc is required to distribute		90.00%

Primary Components of Net Defer

Primary Components of Net Deferred Tax Asset (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Deferred tax assets
Net operating loss and capital loss carryovers	$ 34	$ 43
Alternative minimum tax and investment tax credits		8
Property and equipment	3	4
Investments in domestic affiliates		2
Deferred revenue and expenses	27	42
Foreign exchange net losses (AOCI)	12	12
Other		2
Total gross deferred tax assets	76	113
Less: Valuation allowance	(27)	(22)
Total deferred tax assets, net of valuation allowance	49	91
Deferred tax liabilities
Property and equipment		(11)
Investments in domestic and foreign affiliates	(8)	(7)
Other		(2)
Total gross deferred tax liabilities	(8)	(20)
Net deferred tax assets	$ 41	$ 71

Income from Continuing Operatio

Income from Continuing Operations Before Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
U.S. income	$ 593	$ 763	$ 530
Foreign income	58	48	44
INCOME BEFORE INCOME TAXES	$ 651	$ 811	$ 574

Provision for Income Taxes from

Provision for Income Taxes from Continuing Operations (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Current Federal	$ 17		$ 2
Current State	6	$ 1	(1)
Current Foreign	19	12	3
Current Income Tax Expense (Benefit), Total	42	13	4
Deferred Federal	32	24	2
Deferred State	4	6
Deferred Foreign	2	(3)	3
Deferred income taxes	38	27	5
Income tax provision – continuing operations	$ 80	$ 40	$ 9

Income Tax Provision Calculated

Income Tax Provision Calculated at Statutory U.S. Federal Income Tax Rate and Actual Income Tax Provision Recorded (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Statutory federal income tax provision	$ 228	$ 284	$ 204
Adjustment for nontaxable income of Host Inc.	(190)	(260)	(203)
State income tax provision, net	10	7	1
Provision for uncertain tax positions			1
Remeasurement of domestic net deferred tax assets	11
Foreign income tax provision	21	9	6
Income tax provision – continuing operations	$ 80	$ 40	$ 9

Unrecognized Tax Benefits Recon

Unrecognized Tax Benefits Reconciliation (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Balance at January 1	$ 11	$ 11
Balance at December 31	$ 11	$ 11

Leases - Additional Information

Leases - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2017USD ($)HotelContract
Leases Disclosure [Line Items]
Number of ground leases | Hotel	26
Operating leases information	Leases and subleases contain one or more renewal options
Aggregate contingent liabilities relating to our former restaurant business	$ 9
Minimum payments from restaurants and the Sub lessee payable to us under non-cancelable subleases	$ 6
Lower Limit
Leases Disclosure [Line Items]
Number of renewal options | Contract	1
Minimum additional renewal option period	5 years
Upper Limit
Leases Disclosure [Line Items]
Minimum additional renewal option period	10 years

Future Minimum Annual Rental Co

Future Minimum Annual Rental Commitments Required Under Non-Cancelable Operating Leases (Detail) $ in Millions	Dec. 31, 2017USD ($)
Operating Leases
2,018	$ 42
2,019	41
2,020	39
2,021	39
2,022	37
Thereafter	1,289
Total minimum lease payments	$ 1,487

Rent Expense (Detail)

Rent Expense (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Leases [Abstract]
Minimum rentals on operating leases	$ 46	$ 45	$ 46
Additional rentals based on sales	38	38	33
Less: sublease rentals	(1)	(2)	(2)
Operating Leases, Rent Expense, Total	$ 83	$ 81	$ 77

Employee Stock Plans - Addition

Employee Stock Plans - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Employee Benefits Disclosure [Line Items]
Compensation expense	$ 11	$ 12	$ 11
Granted	1,500,000	2,300,000	1,800,000
Vested	600,000	1,200,000	800,000
RSU Awards | Executive Officer
Employee Benefits Disclosure [Line Items]
Compensation expense	$ 9	$ 10	$ 8
RSU Awards | Vesting over one-year Period
Employee Benefits Disclosure [Line Items]
Vesting term	1 year
RSU Awards | Vesting over two-year Period
Employee Benefits Disclosure [Line Items]
Vesting term	2 years
RSU Awards | Vesting over three-year Period
Employee Benefits Disclosure [Line Items]
Vesting term	3 years
RSU Awards | Time-Based Awards
Employee Benefits Disclosure [Line Items]
Vesting term	3 years
Shares vesting percentage	33.00%
Percentage of shares expected to be released	100.00%
RSU Awards | TSR Awards
Employee Benefits Disclosure [Line Items]
Vesting term	3 years
Shares vesting percentage	33.00%
RSU Awards | Performance-Based Awards
Employee Benefits Disclosure [Line Items]
Shares vesting percentage	34.00%
RSU Awards | TSR Awards, Performance Period One
Employee Benefits Disclosure [Line Items]
Performance period	1 year
RSU Awards | TSR Awards, Performance Period Two
Employee Benefits Disclosure [Line Items]
Performance period	2 years
RSU Awards | TSR Awards, Performance Period Three
Employee Benefits Disclosure [Line Items]
Performance period	3 years
Employee Stock Option
Employee Benefits Disclosure [Line Items]
Compensation expense		1.5	1.8
Stock options outstanding	600,000
Stock options exercisable	600,000
Weighted average remaining life - outstanding	7 years
Weighted average remaining life - exercisable	7 years
Weighted average exercise price - outstanding	$ 18.98
Weighted average exercise price - exercisable	$ 18.98
Proceeds from stock options exercised	$ 7	4	2
Other Stock Plans, Upper-middle management awards
Employee Benefits Disclosure [Line Items]
Vesting term	3 years
Other Stock Plans, employee stock purchase plan
Employee Benefits Disclosure [Line Items]
Employee stock purchase plan discount percentage	10.00%
Other Stock Plans
Employee Benefits Disclosure [Line Items]
Compensation expense	$ 1.7	$ 1.6	$ 1.9
Granted	69,000	118,000	116,000
2009 Comprehensive Plan
Employee Benefits Disclosure [Line Items]
Common stock reserved and available for issuance under the Comprehensive Plan	14,000,000
Senior Executive Plan | RSU Awards
Employee Benefits Disclosure [Line Items]
Granted	1,400,000
Unvested RSUs	700,000
Unrecognized compensation cost related to unvested RSU awards	$ 8
Senior Executive Plan | RSU Awards | Vesting over one-year Period
Employee Benefits Disclosure [Line Items]
Vesting term	1 year
Senior Executive Plan | RSU Awards | Vesting over two-year Period
Employee Benefits Disclosure [Line Items]
Vesting term	2 years
Senior Executive Plan | RSU Awards | Vesting over three-year Period
Employee Benefits Disclosure [Line Items]
Vesting term	3 years

Employee Stock Plans - Assumpti

Employee Stock Plans - Assumptions to Determine Fair Value of Awards granted (Details) - 2017 Award Grants	12 Months Ended
	Dec. 31, 2017$ / shares
NAREIT Index
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Market price per Host Inc. common share	$ 18.56
Volatility	25.20%
Beta	1.178%
NAREIT Index | One Year Award
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free rate	0.82%
NAREIT Index | Two Year Award
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free rate	1.20%
NAREIT Index | Three Year Award
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free rate	1.48%
Selected Lodging Company Index
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Market price per Host Inc. common share	$ 18.56
Volatility	25.20%
Beta	1.182%
Selected Lodging Company Index | One Year Award
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free rate	0.82%
Selected Lodging Company Index | Two Year Award
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free rate	1.20%
Selected Lodging Company Index | Three Year Award
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free rate	1.48%
Standard & Poor's Index
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Market price per Host Inc. common share	$ 18.56
Volatility	25.20%
Beta	1.006%
Standard & Poor's Index | One Year Award
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free rate	0.82%
Standard & Poor's Index | Two Year Award
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free rate	1.20%
Standard & Poor's Index | Three Year Award
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free rate	1.48%

Employee Stock Plans - Schedule

Employee Stock Plans - Schedule Payout for TSR Awards (Detail) - RSU Awards - TSR Awards	Dec. 31, 2017
Disclosure Employee Stock Plans Schedule Payout For T S R Awards Detail [Line Items]
At or above 75th percentile	100.00%
50th percentile	50.00%
30th percentile	25.00%
Below 30th percentile	0.00%

Summary of Status of Senior Exe

Summary of Status of Senior Executive Plans (Detail) - $ / shares shares in Millions		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Shares
Granted		1.5	2.3	1.8
Vested		(0.6)	(1.2)	(0.8)
Restricted Stock | Executive Officer
Shares
Granted		1.4	1.6	1.3
Vested	[1]	(0.5)	(0.6)	(0.4)
Forfeited/expired		(0.2)	(1)	(0.9)
Balance, at end of year		0.7
Issued in calendar year	[1]	0.3	0.2	0.5
Fair Value
Granted		$ 15	$ 18	$ 16
Vested	[1]	20	19	15
Forfeited/expired		20	19	15
Balance, at end of year		14
Issued in calendar year	[1]	$ 19	$ 15	$ 24
[1]	Shares that vest at December 31 of each year are issued to the employees in the first quarter of the following year, although the requisite service period is complete. Accordingly, the 0.3 million shares issued in 2017 include shares vested at December 31, 2016, after adjusting for shares withheld to meet employee tax requirements. The shares withheld for employee tax requirements were valued at $4.9 million, $2.4 million and $9.8 million for 2017, 2016 and 2015, respectively.

Summary of Status of Senior E80

Summary of Status of Senior Executive Plans (Parenthetical) (Detail) - Executive Officer - Restricted Stock - USD ($) shares in Millions, $ in Millions		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares issued	[1]	0.3	0.2	0.5
Value of shares withheld for employee tax requirements		$ 4.9	$ 2.4	$ 9.8
[1]	Shares that vest at December 31 of each year are issued to the employees in the first quarter of the following year, although the requisite service period is complete. Accordingly, the 0.3 million shares issued in 2017 include shares vested at December 31, 2016, after adjusting for shares withheld to meet employee tax requirements. The shares withheld for employee tax requirements were valued at $4.9 million, $2.4 million and $9.8 million for 2017, 2016 and 2015, respectively.

Dispositions - Additional Infor

Dispositions - Additional Information (Detail) $ in Millions	Feb. 23, 2018USD ($)	Dec. 31, 2017USD ($)Hotel	Dec. 31, 2016USD ($)Hotel	Dec. 31, 2015USD ($)Hotel
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Number of hotels sold | Hotel		4	10	8
Gain on sale of assets		$ 99	$ 243	$ 89
Proceeds from sales of assets, net		481	465	$ 275
FF&E replacement fund retained		195	$ 173
Key Bridge Marriott | Subsequent Event
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Proceeds from sales of assets, net	$ 190
FF&E replacement fund retained	$ 8
Australia | Hilton Melbourne South Wharf
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Capital gain tax on disposition		$ 17

Acquisitions - Additional Infor

Acquisitions - Additional Information (Detail) AUD in Millions, $ in Millions	Mar. 07, 2017USD ($)Room	Feb. 16, 2017USD ($)Room	Mar. 31, 2017USD ($)	Oct. 31, 2016USD ($)Apartment	Oct. 31, 2016AUDApartment	Jul. 31, 2016USD ($)	Mar. 31, 2018USD ($)Room
Key Bridge Marriott
Business Acquisition [Line Items]
Payments to purchase ground lease | $						$ 54
Hilton Melbourne South Wharf
Business Acquisition [Line Items]
Other asset acquisition				$ 4	AUD 5
Hilton Melbourne South Wharf | Apartment
Business Acquisition [Line Items]
Number of rooms/apartment | Apartment				8	8
W Hollywood Hotel
Business Acquisition [Line Items]
Number of rooms/apartment | Room	305
Acquisition purchase price | $	$ 219
The Don CeSar Hotel and Beach House Suites
Business Acquisition [Line Items]
Number of rooms/apartment | Room		347
Acquisition purchase price | $		$ 214
Miami Marriott Biscayne Bay
Business Acquisition [Line Items]
Payments to purchase ground lease | $			$ 38
Andaz Maui | Scenario Forecast
Business Acquisition [Line Items]
Number of rooms/apartment | Room							301
Grand Hyatt San Francisco | Scenario Forecast
Business Acquisition [Line Items]
Number of rooms/apartment | Room							668
Hyatt Regency Coconut Point | Scenario Forecast
Business Acquisition [Line Items]
Number of rooms/apartment | Room							454
Andaz Maui, Grand Hyatt San Francisco, and Hyatt Regency Coconut Point | Scenario Forecast
Business Acquisition [Line Items]
Acquisition purchase price | $							$ 1,000

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2017USD ($)Contract	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2017EUR (€)Contract	Dec. 31, 2017NZDContract
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Credit facility	$ 1,170	$ 1,206
Foreign currency translation and other comprehensive income (loss) of unconsolidated affiliates	23		$ (71)
W New York
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impairment loss	43
Designated as Hedging Instrument
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Credit facility	129
Foreign currency translation and other comprehensive income (loss) of unconsolidated affiliates	(14)	2
Matured Foreign Currency Forward Purchase Contract
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Notional amount | €				€ 15,000,000
Total proceeds	4
New Foreign Currency Forward Purchase Contract
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Notional amount | €				15,000,000
Settle Forward Currency Hedges
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Payments of settlement of forward currency hedges	$ 2
Foreign Currency Forward Contracts One
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Notional amount | NZD					NZD 45,000,000
Foreign Currency Forward Contract Two
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Notional amount | €				€ 55,000,000
Foreign currency forward sale contracts
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Number of foreign currency forward contracts outstanding | Contract	3			3	3
Notional amount	$ 70
Change in fair value gain (loss)	(14)	6
Level 3 | W New York
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of property, following the impairment loss	191
Financial assets and liabilities measured on recurring basis | Significant Other Observable Inputs (Level 2) | Foreign currency forward sale contracts
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of derivative assets		$ 12
Fair value of derivative liability	$ 5

Fair Values of Certain Financia

Fair Values of Certain Financial Liabilities and Other Financial Instruments (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Financial liabilities
Senior notes	$ 2,778	$ 2,380
Credit facility, carrying value	1,170	1,206
Mortgage debt and other, excluding capital leases, carrying value	5	62
Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial liabilities
Senior notes (Level 1), fair value	2,932	2,477
Significant Other Observable Inputs (Level 2)
Financial liabilities
Credit facility (Level 2), fair value	1,178	1,211
Significant Other Observable Inputs (Level 2) | Mortgage debt and other, excluding capital leases
Financial liabilities
Mortgage debt and other, excluding capital leases (Level 2), fair value	$ 5	$ 62

Relationship with Marriott In85

Relationship with Marriott International - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Related Party Transaction [Line Items]
Management fees	$ 239	$ 236	$ 226
Agreements with Marriott International Inc
Related Party Transaction [Line Items]
Percentage of management agreements, based on revenues	79.00%
Management fees	$ 199	159	138
Franchise fees	$ 9.7	$ 4.6	$ 2.6

Hotel Management Agreements a86

Hotel Management Agreements and Operating and License Agreements - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017Contract
Liabilities For Guarantees On Long Duration Contracts [Line Items]
Percentage of property revenue allocated for renewal and replacement capital expenditures	5.00%
Lower Limit
Liabilities For Guarantees On Long Duration Contracts [Line Items]
Base management fee as percentage of annual gross revenues	2.00%
Management incentive fee as percentage of operating profit	10.00%
Number of renewal options	1
Lower Limit | Contractual Rights
Liabilities For Guarantees On Long Duration Contracts [Line Items]
Agreement initial term	10 years
Number of renewal options	1
Upper Limit
Liabilities For Guarantees On Long Duration Contracts [Line Items]
Base management fee as percentage of annual gross revenues	3.00%
Management incentive fee as percentage of operating profit	20.00%
Upper Limit | Contractual Rights
Liabilities For Guarantees On Long Duration Contracts [Line Items]
Agreement initial term	25 years
Marriott
Liabilities For Guarantees On Long Duration Contracts [Line Items]
Percentage of management agreements, based on revenues	79.00%
Marriott | Hotels Operating under W, Westin, Sheraton, Luxury Collection and St. Regis Brands
Liabilities For Guarantees On Long Duration Contracts [Line Items]
Base fee percentage	1.00%
Marriott | Occupancy | Licensing Agreements
Liabilities For Guarantees On Long Duration Contracts [Line Items]
Percentage sales paid for fees	5.00%
Marriott | Food and Beverage | Licensing Agreements
Liabilities For Guarantees On Long Duration Contracts [Line Items]
Percentage sales paid for fees	2.00%
Hyatt
Liabilities For Guarantees On Long Duration Contracts [Line Items]
Percentage of management agreements, based on revenues	14.00%

Geographic and Business Segme87

Geographic and Business Segment Information - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017SegmentCountry
Segment Reporting Information [Line Items]
Number of operating segments | Segment	1
Non-US
Segment Reporting Information [Line Items]
Foreign operations, number of countries | Country	3

Revenues and Long-Lived Assets

Revenues and Long-Lived Assets by Geographical Area (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Revenues	$ 5,387	$ 5,430	$ 5,350
Property and equipment, net	9,692	10,145	10,583
United States
Segment Reporting Information [Line Items]
Revenues	5,260	5,259	5,129
Property and equipment, net	9,548	9,913	10,294
Australia
Segment Reporting Information [Line Items]
Revenues	19	34	34
Property and equipment, net		85	88
Brazil
Segment Reporting Information [Line Items]
Revenues	22	34	30
Property and equipment, net	59	63	53
Canada
Segment Reporting Information [Line Items]
Revenues	59	54	58
Property and equipment, net	71	71	66
Chile
Segment Reporting Information [Line Items]
Revenues		9	25
Property and equipment, net			44
Mexico
Segment Reporting Information [Line Items]
Revenues	27	29	29
Property and equipment, net	$ 14	13	18
New Zealand
Segment Reporting Information [Line Items]
Revenues		$ 11	45
Property and equipment, net			$ 20

Guarantees and Contingencies -

Guarantees and Contingencies - Additional Information (Detail)	1 Months Ended		12 Months Ended
	Jan. 31, 2013USD ($)	Jan. 31, 2005Hotel	Dec. 31, 2017USD ($)Hotel	Dec. 31, 2016USD ($)Hotel	Dec. 31, 2015USD ($)Hotel	Sep. 30, 2017USD ($)Hotel	Aug. 31, 2017Hotel
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

Legal Proceedings - Additional

Legal Proceedings - Additional Information (Detail)	Dec. 31, 2017USD ($)
Loss Contingencies [Line Items]
Loss contingency accrual	$ 3,000,000
Maximum
Loss Contingencies [Line Items]
Estimate of possible losses	15,000,000
Other Litigation Cases
Loss Contingencies [Line Items]
Estimate of possible losses	$ 150,000

Quarterly Financial Data (Detai

Quarterly Financial Data (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended																12 Months Ended
	Dec. 31, 2017		Sep. 30, 2017		Jun. 30, 2017		Mar. 31, 2017		Dec. 31, 2016		Sep. 30, 2016		Jun. 30, 2016		Mar. 31, 2016		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Quarterly Financial Information [Line Items]
Revenues																	$ 5,387	$ 5,430	$ 5,350
Operating profit																	676	684	631
NET INCOME																	571	771	565
Net income attributable to Host Hotels & Resorts, Inc.																	$ 564	$ 762	$ 558
Basic earnings per common share																	$ 0.76	$ 1.03	$ 0.74
Diluted earnings per common share																	$ 0.76	$ 1.02	$ 0.74
HOST HOTELS & RESORTS, INC.
Quarterly Financial Information [Line Items]
Revenues	$ 1,344		$ 1,254		$ 1,441		$ 1,348		$ 1,337		$ 1,295		$ 1,459		$ 1,339
Operating profit	134		127		244		171		150		144		239		151
NET INCOME	93		105		212		161		128		108		351		184
Net income attributable to Host Hotels & Resorts, Inc.	$ 92		$ 104		$ 210		$ 158		$ 126		$ 107		$ 347		$ 182
Basic earnings per common share	$ 0.12		$ 0.14		$ 0.28		$ 0.21		$ 0.17		$ 0.14		$ 0.47		$ 0.24
Diluted earnings per common share	$ 0.12		$ 0.14		$ 0.28		$ 0.21		$ 0.17		$ 0.14		$ 0.47		$ 0.24
HOST HOTELS & RESORTS L.P.
Quarterly Financial Information [Line Items]
Revenues																	$ 5,387	$ 5,430	$ 5,350
Operating profit																	676	684	631
NET INCOME																	571	771	565
Net income attributable to Host Hotels & Resorts, Inc.	$ 93	[1]	$ 106	[1]	$ 212	[1]	$ 160	[1]	$ 127	[1]	$ 108	[1]	$ 352	[1]	$ 184	[1]	$ 571	$ 771	$ 565
Basic earnings per common share	$ 0.13	[1]	$ 0.14	[1]	$ 0.29	[1]	$ 0.22	[1]	$ 0.17	[1]	$ 0.15	[1]	$ 0.48	[1]	$ 0.25	[1]	$ 0.78	$ 1.05	$ 0.76
Diluted earnings per common share	$ 0.13	[1]	$ 0.14	[1]	$ 0.29	[1]	$ 0.22	[1]	$ 0.17	[1]	$ 0.15	[1]	$ 0.48	[1]	$ 0.25	[1]	$ 0.78	$ 1.05	$ 0.76
[1]	Other income statement line items not presented for Host L.P. are equal to the amounts presented for Host Inc.

Real Estate and Accumulated D92

Real Estate and Accumulated Depreciation (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Real Estate And Accumulated Depreciation [Line Items]
Debt	$ 3,983
Initial Costs, Land	1,965
Initial Costs, Buildings & Improvements	8,975
Subsequent Costs Capitalized	4,565
Foreign Currency Adjustment	(42)
Land	1,934
Buildings & Improvements	13,529
Total	15,463	$ 15,530	$ 15,516	$ 15,160
Accumulated Depreciation	6,272	$ 5,949	$ 5,666	$ 5,283
Other Property
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	5
Initial Costs, Buildings & Improvements	1
Subsequent Costs Capitalized	12
Land	5
Buildings & Improvements	13
Total	18
Accumulated Depreciation	$ 8
Depreciation Life	40 years
Date Acquired	various
Atlanta Marriott Suites Midtown
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	$ 26
Subsequent Costs Capitalized	12
Buildings & Improvements	38
Total	38
Accumulated Depreciation	$ 22
Date Acquired	1,996
Depreciation Life	40 years
Axiom Hotel
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 36
Initial Costs, Buildings & Improvements	38
Subsequent Costs Capitalized	39
Land	36
Buildings & Improvements	77
Total	113
Accumulated Depreciation	$ 9
Date Acquired	2,014
Depreciation Life	33 years
Boston Marriott Copley Place
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	$ 203
Subsequent Costs Capitalized	79
Buildings & Improvements	282
Total	282
Accumulated Depreciation	$ 140
Date Acquired	2,002
Depreciation Life	40 years
Calgary Marriott Downtown
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 5
Initial Costs, Buildings & Improvements	18
Subsequent Costs Capitalized	46
Land	5
Buildings & Improvements	64
Total	69
Accumulated Depreciation	$ 33
Date Acquired	1,996
Depreciation Life	40 years
Chicago Marriott Suites Downers Grove
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 2
Initial Costs, Buildings & Improvements	14
Subsequent Costs Capitalized	13
Land	2
Buildings & Improvements	27
Total	29
Accumulated Depreciation	$ 15
Date Acquired	1,996
Depreciation Life	40 years
Chicago Marriott Suites O'Hare
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 5
Initial Costs, Buildings & Improvements	36
Subsequent Costs Capitalized	23
Land	5
Buildings & Improvements	59
Total	64
Accumulated Depreciation	$ 28
Date Acquired	1,998
Depreciation Life	40 years
Coronado Island Marriott Resort & Spa
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	$ 53
Subsequent Costs Capitalized	46
Buildings & Improvements	99
Total	99
Accumulated Depreciation	$ 56
Date Acquired	1,997
Depreciation Life	40 years
Costa Mesa Marriott
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 3
Initial Costs, Buildings & Improvements	18
Subsequent Costs Capitalized	10
Land	3
Buildings & Improvements	28
Total	31
Accumulated Depreciation	$ 17
Date Acquired	1,996
Depreciation Life	40 years
Courtyard Chicago Downtown/River North
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 7
Initial Costs, Buildings & Improvements	27
Subsequent Costs Capitalized	15
Land	7
Buildings & Improvements	42
Total	49
Accumulated Depreciation	$ 29
Date Acquired	1,992
Depreciation Life	40 years
Denver Marriott Tech Center Hotel
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 6
Initial Costs, Buildings & Improvements	26
Subsequent Costs Capitalized	81
Land	6
Buildings & Improvements	107
Total	113
Accumulated Depreciation	$ 48
Date Acquired	1,994
Depreciation Life	40 years
Denver Marriott West
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	$ 12
Subsequent Costs Capitalized	15
Buildings & Improvements	27
Total	27
Accumulated Depreciation	$ 22
Date Acquired	1,983
Depreciation Life	40 years
Embassy Suites Chicago-Downtown/Lakefront
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	$ 86
Subsequent Costs Capitalized	17
Buildings & Improvements	103
Total	103
Accumulated Depreciation	$ 39
Date Acquired	2,004
Depreciation Life	40 years
Gaithersburg Marriott Washingtonian Center
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 7
Initial Costs, Buildings & Improvements	22
Subsequent Costs Capitalized	13
Land	7
Buildings & Improvements	35
Total	42
Accumulated Depreciation	$ 23
Date Acquired	1,993
Depreciation Life	40 years
Grand Hyatt Atlanta in Buckhead
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 8
Initial Costs, Buildings & Improvements	88
Subsequent Costs Capitalized	30
Land	8
Buildings & Improvements	118
Total	126
Accumulated Depreciation	$ 62
Date Acquired	1,998
Depreciation Life	40 years
Grand Hyatt Washington
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 154
Initial Costs, Buildings & Improvements	247
Subsequent Costs Capitalized	30
Land	154
Buildings & Improvements	277
Total	431
Accumulated Depreciation	$ 60
Date Acquired	2,012
Depreciation Life	33 years
Hilton Singer Island Oceanfront Resort
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 2
Initial Costs, Buildings & Improvements	10
Subsequent Costs Capitalized	22
Land	2
Buildings & Improvements	32
Total	34
Accumulated Depreciation	$ 24
Date Acquired	1,994
Depreciation Life	40 years
Houston Airport Marriott at George Bush Intercontinental
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	$ 10
Subsequent Costs Capitalized	92
Buildings & Improvements	102
Total	102
Accumulated Depreciation	$ 62
Date Acquired	1,984
Depreciation Life	40 years
Houston Marriott Medical Center
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	$ 19
Subsequent Costs Capitalized	34
Buildings & Improvements	53
Total	53
Accumulated Depreciation	$ 35
Date Acquired	1,998
Depreciation Life	40 years
Hyatt Place Waikiki Beach
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 12
Initial Costs, Buildings & Improvements	120
Subsequent Costs Capitalized	2
Land	11
Buildings & Improvements	123
Total	134
Accumulated Depreciation	$ 20
Date Acquired	2,013
Depreciation Life	34 years
Hyatt Regency Cambridge, Overlooking Boston
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 18
Initial Costs, Buildings & Improvements	84
Subsequent Costs Capitalized	12
Land	19
Buildings & Improvements	95
Total	114
Accumulated Depreciation	$ 57
Date Acquired	1,998
Depreciation Life	40 years
Hyatt Regency Maui Resort & Spa
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 92
Initial Costs, Buildings & Improvements	212
Subsequent Costs Capitalized	71
Land	81
Buildings & Improvements	294
Total	375
Accumulated Depreciation	$ 119
Date Acquired	2,003
Depreciation Life	40 years
Hyatt Regency Reston
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 11
Initial Costs, Buildings & Improvements	78
Subsequent Costs Capitalized	29
Land	12
Buildings & Improvements	106
Total	118
Accumulated Depreciation	$ 56
Date Acquired	1,998
Depreciation Life	40 years
Hyatt Regency San Francisco Airport
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 16
Initial Costs, Buildings & Improvements	119
Subsequent Costs Capitalized	111
Land	20
Buildings & Improvements	226
Total	246
Accumulated Depreciation	$ 103
Date Acquired	1,998
Depreciation Life	40 years
Hyatt Regency Washington on Capitol Hill
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 40
Initial Costs, Buildings & Improvements	230
Subsequent Costs Capitalized	42
Land	40
Buildings & Improvements	272
Total	312
Accumulated Depreciation	$ 100
Date Acquired	2,005
Depreciation Life	40 years
JW Marriott Atlanta Buckhead
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 16
Initial Costs, Buildings & Improvements	21
Subsequent Costs Capitalized	30
Land	16
Buildings & Improvements	51
Total	67
Accumulated Depreciation	$ 37
Date Acquired	1,990
Depreciation Life	40 years
JW Marriott Hotel Rio de Janeiro
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 13
Initial Costs, Buildings & Improvements	29
Subsequent Costs Capitalized	3
Foreign Currency Adjustment	(21)
Land	6
Buildings & Improvements	18
Total	24
Accumulated Depreciation	$ 4
Date Acquired	2,010
Depreciation Life	40 years
JW Marriott Houston
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 4
Initial Costs, Buildings & Improvements	26
Subsequent Costs Capitalized	44
Land	6
Buildings & Improvements	68
Total	74
Accumulated Depreciation	$ 41
Date Acquired	1,994
Depreciation Life	40 years
JW Marriott Mexico City
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 11
Initial Costs, Buildings & Improvements	35
Subsequent Costs Capitalized	21
Land	10
Buildings & Improvements	57
Total	67
Accumulated Depreciation	$ 49
Date Acquired	1,996
Depreciation Life	40 years
JW Marriott, Washington D.C.
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 26
Initial Costs, Buildings & Improvements	98
Subsequent Costs Capitalized	63
Land	26
Buildings & Improvements	161
Total	187
Accumulated Depreciation	$ 91
Date Acquired	2,003
Depreciation Life	40 years
Philadelphia Airport Marriott
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	$ 42
Subsequent Costs Capitalized	19
Buildings & Improvements	61
Total	61
Accumulated Depreciation	$ 36
Date Acquired	1,995
Depreciation Life	40 years
Manchester Grand Hyatt, San Diego
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	$ 548
Subsequent Costs Capitalized	61
Buildings & Improvements	609
Total	609
Accumulated Depreciation	$ 150
Date Acquired	2,011
Depreciation Life	35 years
Residence Inn Arlington Pentagon City
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 6
Initial Costs, Buildings & Improvements	29
Subsequent Costs Capitalized	12
Land	6
Buildings & Improvements	41
Total	47
Accumulated Depreciation	$ 24
Date Acquired	1,996
Depreciation Life	40 years
Rio de Janeiro Parque Olimpico Hotels
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 21
Initial Costs, Buildings & Improvements	39
Foreign Currency Adjustment	(21)
Land	13
Buildings & Improvements	26
Total	39
Accumulated Depreciation	$ 4
Date of Completion of Construction	2,014
Depreciation Life	35 years
Marina del Rey Marriott
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	$ 13
Subsequent Costs Capitalized	35
Buildings & Improvements	48
Total	48
Accumulated Depreciation	$ 28
Date Acquired	1,995
Depreciation Life	40 years
San Antonio Marriott Rivercenter
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	$ 86
Subsequent Costs Capitalized	86
Buildings & Improvements	172
Total	172
Accumulated Depreciation	$ 104
Date Acquired	1,996
Depreciation Life	40 years
Marriott Marquis San Diego Marina
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	$ 202
Subsequent Costs Capitalized	376
Buildings & Improvements	578
Total	578
Accumulated Depreciation	$ 289
Date Acquired	1,996
Depreciation Life	40 years
San Antonio Marriott Riverwalk
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	$ 45
Subsequent Costs Capitalized	36
Buildings & Improvements	81
Total	81
Accumulated Depreciation	$ 47
Date Acquired	1,995
Depreciation Life	40 years
Miami Marriott Biscayne Bay
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 38
Initial Costs, Buildings & Improvements	27
Subsequent Costs Capitalized	40
Land	38
Buildings & Improvements	67
Total	105
Accumulated Depreciation	$ 50
Date Acquired	1,998
Depreciation Life	40 years
San Francisco Marriott Fisherman’s Wharf
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 6
Initial Costs, Buildings & Improvements	20
Subsequent Costs Capitalized	32
Land	6
Buildings & Improvements	52
Total	58
Accumulated Depreciation	$ 31
Date Acquired	1,994
Depreciation Life	40 years
Minneapolis Marriott City Center
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 34
Initial Costs, Buildings & Improvements	27
Subsequent Costs Capitalized	44
Land	34
Buildings & Improvements	71
Total	105
Accumulated Depreciation	$ 60
Date Acquired	1,995
Depreciation Life	40 years
San Francisco Marriott Marquis
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	$ 278
Subsequent Costs Capitalized	123
Buildings & Improvements	401
Total	401
Accumulated Depreciation	$ 280
Date Acquired	1,989
Depreciation Life	40 years
New Orleans Marriott
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 16
Initial Costs, Buildings & Improvements	96
Subsequent Costs Capitalized	137
Land	16
Buildings & Improvements	233
Total	249
Accumulated Depreciation	$ 156
Date Acquired	1,996
Depreciation Life	40 years
San Ramon Marriott
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	$ 22
Subsequent Costs Capitalized	24
Buildings & Improvements	46
Total	46
Accumulated Depreciation	$ 28
Date Acquired	1,996
Depreciation Life	40 years
New York Marriott Downtown
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 19
Initial Costs, Buildings & Improvements	79
Subsequent Costs Capitalized	48
Land	19
Buildings & Improvements	127
Total	146
Accumulated Depreciation	$ 82
Date Acquired	1,997
Depreciation Life	40 years
Santa Clara Marriott
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	$ 39
Subsequent Costs Capitalized	59
Buildings & Improvements	98
Total	98
Accumulated Depreciation	$ 87
Date Acquired	1,989
Depreciation Life	40 years
New York Marriott Marquis
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 49
Initial Costs, Buildings & Improvements	552
Subsequent Costs Capitalized	225
Land	49
Buildings & Improvements	777
Total	826
Accumulated Depreciation	$ 604
Date Acquired	1,986
Depreciation Life	40 years
Scottsdale Marriott at McDowell Mountains
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 8
Initial Costs, Buildings & Improvements	48
Subsequent Costs Capitalized	9
Land	8
Buildings & Improvements	57
Total	65
Accumulated Depreciation	$ 21
Date Acquired	2,004
Depreciation Life	40 years
Scottsdale Marriott Suites Old Town
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 3
Initial Costs, Buildings & Improvements	20
Subsequent Costs Capitalized	12
Land	3
Buildings & Improvements	32
Total	35
Accumulated Depreciation	$ 20
Date Acquired	1,996
Depreciation Life	40 years
Newark Liberty International Airport Marriott
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	$ 30
Subsequent Costs Capitalized	48
Buildings & Improvements	78
Total	78
Accumulated Depreciation	$ 49
Date Acquired	1,984
Depreciation Life	40 years
Sheraton Boston Hotel
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 42
Initial Costs, Buildings & Improvements	262
Subsequent Costs Capitalized	69
Land	42
Buildings & Improvements	331
Total	373
Accumulated Depreciation	$ 124
Date Acquired	2,006
Depreciation Life	40 years
Newport Beach Marriott Bayview
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 6
Initial Costs, Buildings & Improvements	14
Subsequent Costs Capitalized	12
Land	6
Buildings & Improvements	26
Total	32
Accumulated Depreciation	$ 17
Date Acquired	1,988
Depreciation Life	40 years
Newport Beach Marriott Hotel & Spa
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 11
Initial Costs, Buildings & Improvements	13
Subsequent Costs Capitalized	117
Land	8
Buildings & Improvements	133
Total	141
Accumulated Depreciation	$ 86
Date Acquired	1,988
Depreciation Life	40 years
Orlando World Center Marriott
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 18
Initial Costs, Buildings & Improvements	157
Subsequent Costs Capitalized	387
Land	29
Buildings & Improvements	533
Total	562
Accumulated Depreciation	$ 288
Date Acquired	1,997
Depreciation Life	40 years
Sheraton New York Times Square Hotel
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 346
Initial Costs, Buildings & Improvements	409
Subsequent Costs Capitalized	204
Land	346
Buildings & Improvements	613
Total	959
Accumulated Depreciation	$ 242
Date Acquired	2,006
Depreciation Life	40 years
Sheraton Parsippany Hotel
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 8
Initial Costs, Buildings & Improvements	30
Subsequent Costs Capitalized	22
Land	8
Buildings & Improvements	52
Total	60
Accumulated Depreciation	$ 23
Date Acquired	2,006
Depreciation Life	40 years
Swissôtel Chicago
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 29
Initial Costs, Buildings & Improvements	132
Subsequent Costs Capitalized	84
Land	30
Buildings & Improvements	215
Total	245
Accumulated Depreciation	$ 102
Date Acquired	1,998
Depreciation Life	40 years
Sheraton San Diego Hotel Marina
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	$ 328
Subsequent Costs Capitalized	39
Buildings & Improvements	367
Total	367
Accumulated Depreciation	$ 123
Date Acquired	2,006
Depreciation Life	40 years
Tampa Airport Marriott
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	$ 9
Subsequent Costs Capitalized	25
Buildings & Improvements	34
Total	34
Accumulated Depreciation	$ 29
Date Acquired	1,971
Depreciation Life	40 years
The Don CeSar
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 46
Initial Costs, Buildings & Improvements	158
Land	46
Buildings & Improvements	158
Total	204
Accumulated Depreciation	$ 5
Date Acquired	2,017
Depreciation Life	34 years
The Camby Hotel
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 10
Initial Costs, Buildings & Improvements	63
Subsequent Costs Capitalized	29
Land	10
Buildings & Improvements	92
Total	102
Accumulated Depreciation	$ 45
Date Acquired	1,998
Depreciation Life	40 years
The Fairmont Kea Lani Maui
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 55
Initial Costs, Buildings & Improvements	294
Subsequent Costs Capitalized	65
Land	55
Buildings & Improvements	359
Total	414
Accumulated Depreciation	$ 137
Date Acquired	2,004
Depreciation Life	40 years
The Logan
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 26
Initial Costs, Buildings & Improvements	60
Subsequent Costs Capitalized	71
Land	27
Buildings & Improvements	130
Total	157
Accumulated Depreciation	$ 56
Date Acquired	1,998
Depreciation Life	40 years
Ritz Carlton Naples
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 19
Initial Costs, Buildings & Improvements	126
Subsequent Costs Capitalized	142
Land	21
Buildings & Improvements	266
Total	287
Accumulated Depreciation	$ 167
Date Acquired	1,996
Depreciation Life	40 years
Ritz Carlton Naples Golf Resort
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 22
Initial Costs, Buildings & Improvements	10
Subsequent Costs Capitalized	78
Land	22
Buildings & Improvements	88
Total	110
Accumulated Depreciation	$ 33
Date of Completion of Construction	2,002
Depreciation Life	40 years
Ritz Carlton Tysons Corner
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	$ 89
Subsequent Costs Capitalized	35
Buildings & Improvements	124
Total	124
Accumulated Depreciation	$ 64
Date Acquired	1,998
Depreciation Life	40 years
St Regis Houston
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 6
Initial Costs, Buildings & Improvements	33
Subsequent Costs Capitalized	21
Land	6
Buildings & Improvements	54
Total	60
Accumulated Depreciation	$ 26
Date Acquired	2,006
Depreciation Life	40 years
The Westin Buckhead Atlanta
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 5
Initial Costs, Buildings & Improvements	84
Subsequent Costs Capitalized	34
Land	6
Buildings & Improvements	117
Total	123
Accumulated Depreciation	$ 60
Date Acquired	1,998
Depreciation Life	40 years
Westin Chicago River North
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 33
Initial Costs, Buildings & Improvements	116
Subsequent Costs Capitalized	12
Land	33
Buildings & Improvements	128
Total	161
Accumulated Depreciation	$ 26
Date Acquired	2,010
Depreciation Life	40 years
Westin Cincinnati
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	$ 54
Subsequent Costs Capitalized	19
Buildings & Improvements	73
Total	73
Accumulated Depreciation	$ 28
Date Acquired	2,006
Depreciation Life	40 years
Westin Denver Downtown
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	$ 89
Subsequent Costs Capitalized	20
Buildings & Improvements	109
Total	109
Accumulated Depreciation	$ 38
Date Acquired	2,006
Depreciation Life	40 years
Westin Georgetown Washington D C
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 16
Initial Costs, Buildings & Improvements	80
Subsequent Costs Capitalized	16
Land	16
Buildings & Improvements	96
Total	112
Accumulated Depreciation	$ 36
Date Acquired	2,006
Depreciation Life	40 years
Westin Indianapolis
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 12
Initial Costs, Buildings & Improvements	100
Subsequent Costs Capitalized	17
Land	12
Buildings & Improvements	117
Total	129
Accumulated Depreciation	$ 40
Date Acquired	2,006
Depreciation Life	40 years
Westin Kierland Resort Spa
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 100
Initial Costs, Buildings & Improvements	280
Subsequent Costs Capitalized	27
Land	100
Buildings & Improvements	307
Total	407
Accumulated Depreciation	$ 92
Date Acquired	2,006
Depreciation Life	40 years
Westin Los Angeles Airport
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	$ 102
Subsequent Costs Capitalized	25
Buildings & Improvements	127
Total	127
Accumulated Depreciation	$ 45
Date Acquired	2,006
Depreciation Life	40 years
Westin Mission Hills Resort Spa
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 40
Initial Costs, Buildings & Improvements	47
Subsequent Costs Capitalized	(39)
Land	13
Buildings & Improvements	37
Total	50
Accumulated Depreciation	$ 25
Date Acquired	2,006
Depreciation Life	40 years
Westin New York Grand Central
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 156
Initial Costs, Buildings & Improvements	152
Subsequent Costs Capitalized	81
Land	156
Buildings & Improvements	233
Total	389
Accumulated Depreciation	$ 95
Date Acquired	2,011
Depreciation Life	40 years
Westin Seattle
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 39
Initial Costs, Buildings & Improvements	175
Subsequent Costs Capitalized	34
Land	39
Buildings & Improvements	209
Total	248
Accumulated Depreciation	$ 69
Date Acquired	2,006
Depreciation Life	40 years
Westin South Coast Plaza Costa Mesa
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	$ 46
Subsequent Costs Capitalized	24
Buildings & Improvements	70
Total	70
Accumulated Depreciation	$ 42
Date Acquired	2,006
Depreciation Life	40 years
Westin Waltham Boston
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 9
Initial Costs, Buildings & Improvements	59
Subsequent Costs Capitalized	18
Land	9
Buildings & Improvements	77
Total	86
Accumulated Depreciation	$ 29
Date Acquired	2,006
Depreciation Life	40 years
The Whitley, A Luxury Collection Hotel, Atlanta Buckhead
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 14
Initial Costs, Buildings & Improvements	81
Subsequent Costs Capitalized	71
Land	15
Buildings & Improvements	151
Total	166
Accumulated Depreciation	$ 95
Date Acquired	1,996
Depreciation Life	40 years
Toronto Marriott Downtown Eaton Centre Hotel
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	$ 27
Subsequent Costs Capitalized	32
Buildings & Improvements	59
Total	59
Accumulated Depreciation	$ 35
Date Acquired	1,995
Depreciation Life	40 years
The Phoenician Hotel
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 72
Initial Costs, Buildings & Improvements	307
Subsequent Costs Capitalized	49
Land	74
Buildings & Improvements	354
Total	428
Accumulated Depreciation	$ 34
Date Acquired	2,015
Depreciation Life	32 years
W Hollywood
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	$ 204
Buildings & Improvements	204
Total	204
Accumulated Depreciation	$ 6
Date Acquired	2,017
Depreciation Life	35 years
The Ritz Carlton Amelia Island
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 25
Initial Costs, Buildings & Improvements	115
Subsequent Costs Capitalized	84
Land	25
Buildings & Improvements	199
Total	224
Accumulated Depreciation	$ 107
Date Acquired	1,998
Depreciation Life	40 years
W New York Union Square
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 48
Initial Costs, Buildings & Improvements	145
Subsequent Costs Capitalized	16
Land	48
Buildings & Improvements	161
Total	209
Accumulated Depreciation	$ 34
Date Acquired	2,010
Depreciation Life	40 years
W Seattle
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 11
Initial Costs, Buildings & Improvements	125
Subsequent Costs Capitalized	12
Land	11
Buildings & Improvements	137
Total	148
Accumulated Depreciation	$ 41
Date Acquired	2,006
Depreciation Life	40 years
The Ritz Carlton Marina Del Rey
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	$ 52
Subsequent Costs Capitalized	35
Buildings & Improvements	87
Total	87
Accumulated Depreciation	$ 54
Date Acquired	1,997
Depreciation Life	40 years
Washington Dulles Airport Marriott
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	$ 3
Subsequent Costs Capitalized	46
Buildings & Improvements	49
Total	49
Accumulated Depreciation	$ 39
Date Acquired	1,970
Depreciation Life	40 years
Washington Marriott At Metro Center
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 20
Initial Costs, Buildings & Improvements	24
Subsequent Costs Capitalized	28
Land	20
Buildings & Improvements	52
Total	72
Accumulated Depreciation	$ 37
Date Acquired	1,994
Depreciation Life	40 years
Westfields Marriott Washington Dulles
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 7
Initial Costs, Buildings & Improvements	32
Subsequent Costs Capitalized	18
Land	7
Buildings & Improvements	50
Total	57
Accumulated Depreciation	$ 34
Date Acquired	1,994
Depreciation Life	40 years
YVE Hotel Miami
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 15
Initial Costs, Buildings & Improvements	41
Subsequent Costs Capitalized	1
Land	15
Buildings & Improvements	42
Total	57
Accumulated Depreciation	$ 5
Date Acquired	2,014
Depreciation Life	33 years
Total Hotels
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	$ 1,960
Initial Costs, Buildings & Improvements	8,974
Subsequent Costs Capitalized	4,553
Foreign Currency Adjustment	(42)
Land	1,929
Buildings & Improvements	13,516
Total	15,445
Accumulated Depreciation	$ 6,264

Real Estate and Accumulated D93

Real Estate and Accumulated Depreciation (Parenthetical) (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2017USD ($)
Real Estate And Accumulated Depreciation [Line Items]
Cost of real estate for federal income tax purposes	$ 10,698
Upper Limit
Real Estate And Accumulated Depreciation [Line Items]
Other properties, percentage	5.00%

Reconciliation of Carrying Amou

Reconciliation of Carrying Amounts of Real Estate Investments (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Earnings Per Share [Abstract]
Beginning Balance	$ 15,530	$ 15,516	$ 15,160
Additions:
Acquisitions	447	58	419
Capital expenditures and transfers from construction-in-progress	191	510	383
Deductions:
Dispositions and other	(567)	(331)	(368)
Impairments	(43)
Assets held for sale	(95)	(223)	(78)
Ending Balance	$ 15,463	$ 15,530	$ 15,516

Change in Accumulated Depreciat

Change in Accumulated Depreciation and Amortization of Real Estate Assets (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Real Estate And Accumulated Depreciation Other Required Disclosures [Abstract]
Beginning Balance	$ 5,949	$ 5,666	$ 5,283
Depreciation and amortization	563	572	558
Dispositions and other	(247)	(159)	(148)
Depreciation on assets held for sale	7	(130)	(27)
Ending Balance	$ 6,272	$ 5,949	$ 5,666