Host Hotels & Resorts 10-K 25 Feb 15 2014 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2014	Feb. 20, 2015	Jun. 30, 2014
Document And Entity Information [Line Items]
Document Type	10-K
Amendment Flag	FALSE
Document Period End Date	31-Dec-14
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Trading Symbol	HST
Entity Registrant Name	HOST HOTELS & RESORTS, INC.
Entity Central Index Key	1070750
Current Fiscal Year End Date	-19
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		757,520,164
Entity Public Float			$16,274,124,536
HOST HOTELS & RESORTS L.P.
Document And Entity Information [Line Items]
Entity Registrant Name	HOST HOTELS & RESORTS L.P.
Entity Central Index Key	1061937
Current Fiscal Year End Date	-19
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		750,840,635

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Dec. 31, 2014		Dec. 31, 2013
In Millions, unless otherwise specified
ASSETS
Property and equipment, net	$10,575		$10,995
Due from managers	70		52
Advances to and investments in affiliates	433		415
Deferred financing costs, net	35		42
Furniture, fixtures and equipment replacement fund	129		173
Other	281		244
Restricted cash			32
Cash and cash equivalents	684		861
Total assets	12,207		12,814
Debt
Senior notes, including $386 million and $371 million, respectively, net of discount, of Exchangeable Senior Debentures	2,884		3,018
Credit facility	704		946
Mortgage debt	404		709
Other			86
Total debt	3,992		4,759
Accounts payable and accrued expenses	298		214
Other	324		389
Total liabilities	4,614		5,362
Partnership interests	225		190
Host Hotels & Resorts, Inc. stockholders’ equity:
Common stock, par value $.01, 1,050 million shares authorized, 755.8 million shares and 754.8 million shares issued and outstanding, respectively	8		8
Additional paid-in capital	8,476		8,492
Accumulated other comprehensive loss	-50		-9
Deficit	-1,098		-1,263
Total equity of Host Hotels & Resorts, Inc. stockholders	7,336		7,228
Non-controlling interests—other consolidated partnerships	32		34
Total equity	7,368		7,262
Total liabilities, non-controlling interests and equity	12,207		12,814
Host Hotels & Resorts, L.P. capital:
Accumulated other comprehensive loss	-50		-9
HOST HOTELS & RESORTS L.P.
ASSETS
Property and equipment, net	10,575		10,995
Due from managers	70		52
Advances to and investments in affiliates	433		415
Deferred financing costs, net	35		42
Furniture, fixtures and equipment replacement fund	129		173
Other	281		244
Restricted cash			32
Cash and cash equivalents	684		861
Total assets	12,207		12,814
Debt
Senior notes, including $386 million and $371 million, respectively, net of discount, of Exchangeable Senior Debentures	2,884		3,018
Credit facility	704		946
Mortgage debt	404		709
Other			86
Total debt	3,992		4,759
Accounts payable and accrued expenses	298		214
Other	324		389
Total liabilities	4,614		5,362
Partnership interests	225	[1]	190	[1]
Host Hotels & Resorts, Inc. stockholders’ equity:
Accumulated other comprehensive loss	-50		-9
Total liabilities, non-controlling interests and equity	12,207		12,814
Host Hotels & Resorts, L.P. capital:
General partner	1		1
Limited partner	7,385		7,236
Accumulated other comprehensive loss	-50		-9
Total Host Hotels & Resorts, L.P. capital	7,336		7,228
Non-controlling interests—consolidated partnerships	32		34
Total capital	$7,368		$7,262
[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 $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, except Share data, unless otherwise specified
Senior notes	$386	$371
Credit facility	704	946
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	1,050,000,000	1,050,000,000
Common stock, shares issued	755,800,000	754,800,000
Common stock, shares outstanding	755,800,000	754,800,000
HOST HOTELS & RESORTS L.P.
Senior notes	386	371
Credit facility	704	946
Term Loan
Credit facility	500	500
Term Loan | HOST HOTELS & RESORTS L.P.
Credit facility	$500	$500

CONSOLIDATED_STATEMENTS_OF_OPE

CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)	12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
REVENUES
Rooms	$3,452		$3,317		$3,082
Food and beverage	1,546		1,503		1,419
Other	356		346		558
Total revenues	5,354		5,166		5,059
EXPENSES
Rooms	924		894		836
Food and beverage	1,109		1,095		1,049
Other departmental and support expenses	1,264		1,249		1,219
Management fees	227		222		199
Other property-level expenses	386		376		576
Depreciation and amortization	701		697		722
Corporate and other expenses	43		121		107
Gain on insurance settlements	-10				-11
Total operating costs and expenses	4,644		4,654		4,697
OPERATING PROFIT	710		512		362
Interest income	4		4		23
Interest expense	-214	[1]	-304	[1]	-373	[1]
Gain on sale of assets	236		33		13
Gain (loss) on foreign currency transactions and derivatives	-1		3		-4
Equity in earnings (losses) of affiliates	26		-17		2
INCOME BEFORE INCOME TAXES	761		231		23
Provision for income taxes	-14		-21		-31
INCOME (LOSS) FROM CONTINUING OPERATIONS	747		210		-8
Income from discontinued operations, net of tax			115		71
NET INCOME	747		325		63
Less: Net income attributable to non-controlling interests	-15		-8		-2
NET INCOME ATTRIBUTABLE TO REPORTING ENTITY	732		317		61
Basic earnings (loss) per common share/unit:
Continuing operations	$0.97		$0.27		($0.01)
Discontinued operations			$0.16		$0.09
Basic earnings (loss) per common share/unit	$0.97		$0.43		$0.08
Diluted earnings (loss) per common share/unit:
Continuing operations	$0.96		$0.27		($0.01)
Discontinued operations			$0.15		$0.09
Diluted earnings (loss) per common share/unit	$0.96		$0.42		$0.08
HOST HOTELS & RESORTS L.P.
REVENUES
Rooms	3,452		3,317		3,082
Food and beverage	1,546		1,503		1,419
Other	356		346		558
Total revenues	5,354		5,166		5,059
EXPENSES
Rooms	924		894		836
Food and beverage	1,109		1,095		1,049
Other departmental and support expenses	1,264		1,249		1,219
Management fees	227		222		199
Other property-level expenses	386		376		576
Depreciation and amortization	701		697		722
Corporate and other expenses	43		121		107
Gain on insurance settlements	-10				-11
Total operating costs and expenses	4,644		4,654		4,697
OPERATING PROFIT	710		512		362
Interest income	4		4		23
Interest expense	-214		-304		-373
Gain on sale of assets	236		33		13
Gain (loss) on foreign currency transactions and derivatives	-1		3		-4
Equity in earnings (losses) of affiliates	26		-17		2
INCOME BEFORE INCOME TAXES	761		231		23
Provision for income taxes	-14		-21		-31
INCOME (LOSS) FROM CONTINUING OPERATIONS	747		210		-8
Income from discontinued operations, net of tax			115		71
NET INCOME	747		325		63
Less: Net income attributable to non-controlling interests	-6		-4		-1
NET INCOME ATTRIBUTABLE TO REPORTING ENTITY	$741		$321		$62
Basic earnings (loss) per common share/unit:
Continuing operations	$0.99		$0.28		($0.01)
Discontinued operations			$0.15		$0.10
Basic earnings (loss) per common share/unit	$0.99		$0.43		$0.09
Diluted earnings (loss) per common share/unit:
Continuing operations	$0.99		$0.28		($0.01)
Discontinued operations			$0.15		$0.10
Diluted earnings (loss) per common share/unit	$0.99		$0.43		$0.09
[1]	Interest expense and interest paid for 2014, 2013 and 2012 include cash prepayment premiums of approximately $2 million, $23 million and $21 million, respectively.

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
NET INCOME	$747	$325	$63
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX:
Foreign currency translation and other comprehensive income (loss) of unconsolidated affiliates	-60	-18	20
Change in fair value of derivative instruments	19	-3	-7
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX	-41	-21	13
COMPREHENSIVE INCOME	706	304	76
Less: Comprehensive income attributable to non-controlling interests	-15	-8	-2
COMPREHENSIVE INCOME ATTRIBUTABLE TO HOST HOTELS & RESORTS, INC.	691	296	74
HOST HOTELS & RESORTS L.P.
NET INCOME	747	325	63
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX:
Foreign currency translation and other comprehensive income (loss) of unconsolidated affiliates	-60	-18	20
Change in fair value of derivative instruments	19	-3	-7
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX	-41	-21	13
COMPREHENSIVE INCOME	706	304	76
Less: Comprehensive income attributable to non-controlling interests	-6	-4	-1
COMPREHENSIVE INCOME ATTRIBUTABLE TO HOST HOTELS & RESORTS, INC.	$700	$300	$75

CONSOLIDATED_STATEMENTS_OF_EQU

CONSOLIDATED STATEMENTS OF EQUITY (USD $)	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.
In Millions
Balance at Dec. 31, 2011		$7	$7,750	($1)	($1,079)	$36	$158
Balance, shares at Dec. 31, 2011		705.1
NET INCOME	63				61	1	1
Other changes in ownership			-12				12
Foreign currency translation and other comprehensive income (loss) of unconsolidated affiliates	20			20
Change in fair value of derivative instruments	-7			-7
Common stock issuances			274
Common stock issuances (shares)		17.5
Comprehensive stock and employee stock purchase plans			18
Comprehensive stock and employee stock purchase plans (shares)		1.4
Common stock dividends					-216
Redemptions of limited partner interests for common stock	10		10				-10
Redemptions of limited partner interests for common stock (shares)	0.6	0.6
Contributions from non- controlling interests of consolidated partnerships						1
Distributions to non-controlling interests						-4	-3
Balance at Dec. 31, 2012		7	8,040	12	-1,234	34	158
Balance, shares at Dec. 31, 2012		724.6
NET INCOME	325				317	4	4
Other changes in ownership			-38			-3	38
Foreign currency translation and other comprehensive income (loss) of unconsolidated affiliates	-18			-18
Change in fair value of derivative instruments	-3			-3
Common stock issuances		1	476
Common stock issuances (shares)		28.7
Comprehensive stock and employee stock purchase plans			8
Comprehensive stock and employee stock purchase plans (shares)		1.2
Common stock dividends					-346
Redemptions of limited partner interests for common stock	6		6				-6
Redemptions of limited partner interests for common stock (shares)	0.3	0.3
Contributions from non- controlling interests of consolidated partnerships						7
Distributions to non-controlling interests						-8	-4
Balance at Dec. 31, 2013	7,262	8	8,492	-9	-1,263	34	190
Balance, shares at Dec. 31, 2013	754.8	754.8
NET INCOME	747				732	6	9
Other changes in ownership			-39			-1	38
Foreign currency translation and other comprehensive income (loss) of unconsolidated affiliates	-60			-60
Change in fair value of derivative instruments	19			19
Common stock issuances			4
Common stock issuances (shares)		0.2
Comprehensive stock and employee stock purchase plans			13
Comprehensive stock and employee stock purchase plans (shares)		0.5
Common stock dividends					-567
Redemptions of limited partner interests for common stock	6		6				-6
Redemptions of limited partner interests for common stock (shares)	0.3	0.3
Contributions from non- controlling interests of consolidated partnerships						1
Distributions to non-controlling interests						-8	-6
Balance at Dec. 31, 2014	$7,368	$8	$8,476	($50)	($1,098)	$32	$225
Balance, shares at Dec. 31, 2014	755.8	755.8

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
OPERATING ACTIVITIES
NET INCOME	$747		$325		$63
Discontinued operations:
Gain on dispositions			-97		-48
Depreciation			10		32
Depreciation and amortization	701		697		722
Amortization of finance costs, discounts and premiums, net	24		25		13
Non-cash loss on extinguishment of debt	2	[1]	13	[1]	9	[1]
Stock compensation expense	22		18		16
Deferred income taxes	-1		6		17
Gain on sale of assets	-236		-33		-13
(Gain) loss on foreign currency transactions and derivatives	1		-3		4
Gain on property insurance settlement	-1				-2
Equity in (earnings) losses of affiliates	-26		17		-2
Change in due from managers	-17		21		-42
Change in restricted cash for operating activities	25
Changes in other assets	-34		39		11
Changes in other liabilities	-57		-19		1
Cash provided by operating activities	1,150		1,019		781
INVESTING ACTIVITIES
Proceeds from sales of assets, net	497		643		160
Return of investment in affiliates	42				3
Acquisitions	-138		-166		-441
Deferred sale proceeds received from HPT					51
Advances to and investments in affiliates	-65		-74		-132
Return on mortgage loan investment					82
Capital expenditures:
Renewals and replacements	-324		-303		-366
Redevelopment and acquisition-related investments	-112		-133		-272
New development	-13		-19		-6
Change in furniture, fixtures and equipment ("FF&E") replacement fund	18		-23		16
Property insurance proceeds	2				19
Cash used in investing activities	-93		-75		-886
FINANCING ACTIVITIES
Financing costs	-4		-4		-18
Issuances of debt	4		550		900
Draws on credit facility	4		393		231
Term loan issuance					500
Repayment of credit facility	-225		-207		-89
Repurchase/redemption of senior notes	-150		-801		-1,795
Mortgage debt and other prepayments and scheduled maturities	-384		-411		-113
Scheduled principal repayments			-2		-2
Issuance of common stock	4		303		274
Dividends on common stock	-469		-313		-187
Contributions from non-controlling interests	1		7		1
Distributions to non-controlling interests	-14		-12		-7
Change in restricted cash for financing activities	7		4
Cash used in financing activities	-1,226		-493		-305
Effects of exchange rate changes on cash held	-8		-7		1
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	-177		444		-409
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	861		417		826
CASH AND CASH EQUIVALENTS, END OF PERIOD	684		861		417
HOST HOTELS & RESORTS L.P.
OPERATING ACTIVITIES
NET INCOME	747		325		63
Discontinued operations:
Gain on dispositions			-97		-48
Depreciation			10		32
Depreciation and amortization	701		697		722
Amortization of finance costs, discounts and premiums, net	24		25		13
Non-cash loss on extinguishment of debt	2		13		9
Stock compensation expense	22		18		16
Deferred income taxes	-1		6		17
Gain on sale of assets	-236		-33		-13
(Gain) loss on foreign currency transactions and derivatives	1		-3		4
Gain on property insurance settlement	-1				-2
Equity in (earnings) losses of affiliates	-26		17		-2
Change in due from managers	-17		21		-42
Change in restricted cash for operating activities	25
Changes in other assets	-34		39		11
Changes in other liabilities	-57		-19		1
Cash provided by operating activities	1,150		1,019		781
INVESTING ACTIVITIES
Proceeds from sales of assets, net	497		643		160
Return of investment in affiliates	42				3
Acquisitions	-138		-166		-441
Deferred sale proceeds received from HPT					51
Advances to and investments in affiliates	-65		-74		-132
Return on mortgage loan investment					82
Capital expenditures:
Renewals and replacements	-324		-303		-366
Redevelopment and acquisition-related investments	-112		-133		-272
New development	-13		-19		-6
Change in furniture, fixtures and equipment ("FF&E") replacement fund	18		-23		16
Property insurance proceeds	2				19
Cash used in investing activities	-93		-75		-886
FINANCING ACTIVITIES
Financing costs	-4		-4		-18
Issuances of debt	4		550		900
Draws on credit facility	4		393		231
Term loan issuance					500
Repayment of credit facility	-225		-207		-89
Repurchase/redemption of senior notes	-150		-801		-1,795
Mortgage debt and other prepayments and scheduled maturities	-384		-411		-113
Scheduled principal repayments			-2		-2
Issuance of common OP units	4		303		274
Distributions paid on common OP units	-475		-317		-190
Contributions from non-controlling interests	1		7		1
Distributions to non-controlling interests	-8		-8		-4
Change in restricted cash for financing activities	7		4
Cash used in financing activities	-1,226		-493		-305
Distributions on common OP units	-475		-317		-190
Effects of exchange rate changes on cash held	-8		-7		1
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	-177		444		-409
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	861		417		826
CASH AND CASH EQUIVALENTS, END OF PERIOD	$684		$861		$417
[1]	Interest expense and interest paid for 2014, 2013 and 2012 include cash prepayment premiums of approximately $2 million, $23 million and $21 million, respectively.

CONSOLIDATED_STATEMENTS_OF_CAP

CONSOLIDATED STATEMENTS OF CAPITAL (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
NET INCOME	$747	$325	$63
Foreign currency translation and other comprehensive income (loss) of unconsolidated affiliates	-60	-18	20
Change in fair value of derivative instruments	19	-3	-7
Redemptions of limited partner interests for common stock	6	6	10
Redemptions of limited partner interests for common stock (shares)	0.3	0.3	0.6
HOST HOTELS & RESORTS L.P.
Beginning Balance	7,262
NET INCOME	747	325	63
Foreign currency translation and other comprehensive income (loss) of unconsolidated affiliates	-60	-18	20
Change in fair value of derivative instruments	19	-3	-7
Redemptions of limited partner interests for common stock	6	6	10
Redemptions of limited partner interests for common stock (shares)	0.3	0.3	0.6
Ending Balance	7,368	7,262
HOST HOTELS & RESORTS L.P. | General Partner
Beginning Balance	1	1	1
Beginning Balance, units	738.9	709.4	690.3
Common OP unit issuances (units)	0.1	28.1	17.1
Units issued to Host Inc. for the comprehensive stock and employee stock purchase plans (units)	0.7	1.1	1.4
Redemptions of limited partner interests for common stock (shares)	0.3	0.3	0.6
Ending Balance	1	1	1
Ending Balance, units	740	738.9	709.4
HOST HOTELS & RESORTS L.P. | Limited Partner
Beginning Balance	7,236	6,812	6,677
NET INCOME	732	317	61
Other changes in ownership	-39	-38	-12
Common OP unit issuances	4	477	274
Units issued to Host Inc. for the comprehensive stock and employee stock purchase plans	13	8	18
Distributions on common OP units	-567	-346	-216
Redemptions of limited partner interests for common stock	6	6	10
Ending Balance	7,385	7,236	6,812
HOST HOTELS & RESORTS L.P. | Accumulated Other Comprehensive Income (Loss)
Beginning Balance	-9	12	-1
Foreign currency translation and other comprehensive income (loss) of unconsolidated affiliates	-60	-18	20
Change in fair value of derivative instruments	19	-3	-7
Ending Balance	-50	-9	12
HOST HOTELS & RESORTS L.P. | Non-controlling Interests of Other Consolidated Partnerships
Beginning Balance	34	34	36
NET INCOME	6	4	1
Other changes in ownership	-1	-3
Contributions from non- controlling interests of consolidated partnerships	1	7	1
Distributions to non-controlling interests	-8	-8	-4
Ending Balance	32	34	34
HOST HOTELS & RESORTS L.P. | Limited Partnership Interests Of Third Parties
Beginning Balance	190	158	158
NET INCOME	9	4	1
Other changes in ownership	38	38	12
Distributions on common OP units	-6	-4	-3
Redemptions of limited partner interests for common stock	-6	-6	-10
Ending Balance	$225	$190	$158

Supplemental_Schedule_of_Nonca

Supplemental Schedule of Noncash Investing and Financing Activities	12 Months Ended
	Dec. 31, 2014
Supplemental Schedule of Noncash Investing and Financing Activities	Supplemental schedule of noncash investing and financing activities:
	During 2014, 2013 and 2012, Host Inc. issued approximately 0.3 million, 0.3 million and 0.6 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, $6 million and $10 million, respectively.
	In March 2013, holders of approximately $174 million of the 3.25% Exchangeable Debentures elected to exchange their debentures for approximately 11.7 million shares of Host Inc. common stock.
	In November 2012, we contributed land with a book value of $11 million and a fair value of $36 million to a joint venture with Hyatt Residential Group to develop a vacation ownership project in Maui, Hawaii. We recorded an initial investment of $8 million related to our 67% ownership in the joint venture and an initial gain of $8 million related to the portion of the land attributable to Hyatt Residential Group’s 33% interest, for which we received cash of $12 million.
HOST HOTELS & RESORTS L.P.
Supplemental Schedule of Noncash Investing and Financing Activities	Supplemental schedule of noncash investing and financing activities:
	During 2014, 2013 and 2012, non-controlling partners converted common operating partnership units (“OP units”) valued at $6 million, $6 million and $10 million, respectively, in exchange for 0.3 million, 0.3 million and 0.6 million shares, respectively, of Host Inc. common stock.
	In March 2013, holders of approximately $174 million of the 3.25% Exchangeable Debentures elected to exchange their debentures for approximately 11.7 million shares of Host Inc. common stock. In connection with the debentures exchanged for Host Inc. common stock, Host L.P. issued 11.5 million common OP units.
	In November 2012, we contributed land with a book value of $11 million and a fair value of $36 million to a joint venture with Hyatt Residential Group to develop a vacation ownership project in Maui, Hawaii. We recorded an initial investment of $8 million related to our 67% ownership in the joint venture and an initial gain of $8 million related to the portion of the land attributable to Hyatt Residential Group’s 33% interest, for which we received cash of $12 million.

Summary_of_Significant_Account

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2014
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 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, 2014, the hotels in our consolidated portfolio are located in the following countries:
		Hotels
	United States		97
	Australia		1
	Brazil		3
	Canada		3
	Chile		2
	Mexico		1
	New Zealand		7
	Total		114
	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”) (10 hotels) and a 33.4% interest in the second fund (“Euro JV Fund II”) (9 hotels).
	As of December 31, 2014, the Euro JV hotels are located in the following countries:
		Hotels
	Belgium		3
	France		4
	Germany		2
	Italy		3
	Poland		1
	Spain		2
	Sweden		1
	The Netherlands		2
	United Kingdom		1
	Total		19
	Asia/Pacific Joint Venture
	We own a 25% non-controlling interest in a joint venture in Asia (“Asia/Pacific JV”) that owns the 278-room Four Points by Sheraton, Perth, in Australia. The Asia/Pacific JV also owns a non-controlling interest in a joint venture in India that is investing in seven hotels, two in Bangalore, one in Chennai and four that are in various stages of development.
	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 the entity. 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. For those partnerships and joint ventures where we are the general partner, we review the rights of the limited partners to determine if those rights would overcome the presumption of control as the general partner. Limited partner rights which would overcome presumption of control by the general partner include the substantive ability to dissolve (liquidate) the limited partnership or otherwise remove the general partners without cause and substantive participating rights over activities considered most significant to the business of the partnership or joint venture, primarily voting rights.
	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 would consolidate 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 of these entities.
	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 includes 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, and a reserve required for potential legal damages. For purposes of the statements of cash flows, changes in restricted cash caused by changes in required legal reserves are shown as operating activities. Changes in restricted cash caused by using such funds for furniture, fixtures and equipment replacement are shown as investing activities. The remaining changes in restricted cash are the direct result of restrictions under our loan agreements and are reflected in cash flows from financing activities.
	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 depreciate our property and equipment using the straight-line method over the estimated useful lives of the assets. Leasehold improvements are amortized over the shorter of the lease term or the useful lives of the related assets.
	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 are then 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 certain 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 the property will be disposed of prior to the end of its useful life, 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 life is equal to the 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 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 impairment of our assets, we make many assumptions and estimates, including:
	·	projected cash flows, both from operations and the eventual disposition;
	·	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, 2014. 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 two properties that required further consideration of property and market specific conditions or factors to determine if the property was impaired using an undiscounted cash flow analysis. Management considered a range of RevPAR and operating margins compared to prior years’ operating results in evaluating the probability-weighted projected cash flows from operations. To appropriately evaluate if the carrying value of the assets was recoverable, we projected cash flows such that the individual properties would return to normalized levels of operations generally within five years and thereafter grow at a stabilized rate of approximately 3% over the remaining estimated lives of the properties. This stabilized growth rate is lower than the projected growth rate for the urban upper upscale properties, which we believe is most representative of our portfolio, over the period from 2013 through 2023. Based on this testing, none of the properties previously identified required further analysis. Management believes its assumptions and estimates reflect current market conditions. During 2014, 2013 and 2012, we recognized impairment expenses of $6 million, $1 million and $60 million, respectively, on one property each year, which impairment expenses are included in depreciation and amortization, based on changes in estimated holding periods.
	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 are frequently 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 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 deferred and recognized as income in subsequent periods as conditions requiring deferral are satisfied or expire without further cost to us.
	Discontinued Operations. In April 2014, the Financial Accounting Standards Board issued Accounting Standards Update (ASU) 2014-08 Presentation of Financial Statements (Topic 205) and Property, Plant and Equipment (Topic 360) - Reporting Discontinued Operations and Disclosure of Disposal of Components of an Entity (“ASU 2014-08 Reporting for Discontinued Operations”). Under this standard, a disposal of a component of an entity or a group of components of an entity is required to be reported in discontinued operations only if the disposal represents a strategic shift that has, or will have, a major effect on an entity’s operations and financial results.  In addition, it requires an entity to present, for each comparative period, the assets and liabilities of a disposal group that includes a discontinued operation separately in the asset and liability sections, respectively, of the statement of financial position. As a result, the operations through the date of disposal and the gain or loss on sale of properties will be included in continuing operations, unless the sale represents a strategic shift. We adopted this standard as of January 1, 2014. No prior year restatements are permitted for this change in policy.
	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. 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 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 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 Liabilities
	In conjunction with our acquisitions, we may identify intangible assets and liabilities. Identifiable intangible assets and liabilities typically include 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 corresponding contracts measured over the period equal to the remaining non-cancelable term of the contract. Intangible assets and 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, 2014, we consolidate six 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 $32 million and $34 million as of December 31, 2014 and 2013, respectively. Two of the partnerships have finite lives that terminate between 2081 and 2095, and the associated non-controlling interests are mandatorily redeemable at the end of, but not prior to, the finite life. At December 31, 2014 and 2013, the fair values of the non-controlling interests in the partnerships with finite lives were approximately $85 million and $68 million, respectively.
	Net income (loss) attributable to non-controlling interests of consolidated partnerships is included in our determination of net income (loss). Net income attributable to non-controlling interests of third parties is $6 million, $4 million and $1 million for 2014, 2013 and 2012, respectively.
	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. 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:
		As of December 31,
		2014			2013
OP units outstanding (millions)			9.3			9.5
Market price per Host Inc. common share		$	23.77		$	19.44
Shares issuable upon conversion of one OP unit			1.021494			1.021494
Redemption value (millions)		$	225		$	190
Historical cost (millions)			94			95
Book value (millions) (1)			225			190
___________
(1)The book value recorded is equal to the greater of the redemption value or the historical cost.
Net income (loss) 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 $9 million, $4 million and $1 million for 2014, 2013 and 2012, respectively.
Investments in Affiliates
Other-than-Temporary Impairment of an Investment.  We perform an analysis for our equity method investments for impairment based on the occurrence of triggering events that would indicate that the carrying amount of the 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 hotel properties; 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 hotel properties, 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 was recorded in 2014, 2013, or 2012.
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 current intention to adhere to 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 revenues) 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. In addition to paying federal and state income tax on any retained income, one of our subsidiary REITs is subject to a tax on “built-in gains” on sales of certain assets. 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.
Deferred Tax Assets and Liabilities. 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, 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.
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.
Foreign Currency Translation
As of December 31, 2014, our international operations consist of hotels located in Australia, Brazil, Canada, Chile, Mexico, and New Zealand, 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 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.
Derivative Instruments
We are subject to market exposures in several aspects of our business and may enter into derivative instruments in order to hedge the effect of these market exposures on our operations. Potential market exposures for which we may use derivative instruments to hedge include: (i) changes in the fair value of our international investments due to fluctuations in currency exchange rates, (ii) changes in the fair value of our fixed-rate debt due to changes in the underlying interest rates, and (iii) variability in interest payments due to changes in the underlying interest rate for our floating-rate debt. Derivative instruments are subject to fair value reporting at each reporting date and the increase or decrease in fair value is recorded in net income (loss) or other comprehensive income (loss), based on the applicable hedge accounting guidance. We estimate the fair value of these instruments through the use of third party valuations, which utilize the market standard methodology of netting the discounted future cash receipts and the discounted future expected cash payments. Prior to entering into the derivative instrument, we evaluate whether the transaction will qualify for hedge accounting and continue to evaluate hedge effectiveness throughout the life of the instrument. Derivative instruments that meet the requirements for hedge accounting are recorded on the balance sheet at fair value, with offsetting changes recorded to net income (loss) or other comprehensive income (loss), based on the applicable hedge accounting guidance. We incorporate credit valuation adjustments to reflect, as applicable, our own nonperformance risk or the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of our derivative instruments for the effect of nonperformance risk, we have considered the impact of netting any applicable credit enhancements, such as collateral postings, thresholds, mutual puts and accumulated guarantees. The variable cash flow streams are based on an expectation of future interest and exchange rates derived from observed market interest and exchange rate curves. The values of these instruments will change over time as cash receipts and payments are made and as market conditions change.
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,
		2014			2013
Gain on foreign currency forward contracts		$	19		$	—
Loss on interest rate swap cash flow hedges			(2	)		(2	)
Foreign currency translation			(67	)		(7	)
Total accumulated other comprehensive loss		$	(50	)	$	(9	)
There were no material amounts reclassified out of accumulated other comprehensive income (loss) to net income for the year ended December 31, 2014 and 2013. During 2012, we reclassified a net gain of $2 million that had been recognized previously in gain on foreign currency forward sale contracts in other comprehensive income related to two foreign currency denominated subsidiaries that were substantially liquidated during the year and recognized such gain in gain (loss) on foreign currency transactions and derivatives on our consolidated statement of operations.
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) on our statements of operations.
Fair Value Measurement
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.
Host Inc. Earnings Per Common Share
Basic earnings per common share is computed by dividing net income attributable to common stockholders by the weighted average number of shares of Host Inc. common stock outstanding. Diluted earnings per common share is computed by dividing net income attributable to common stockholders, as adjusted for potentially dilutive securities, by the weighted average number of shares of Host Inc. common stock outstanding plus other potentially dilutive securities. Dilutive securities may include shares granted under comprehensive stock plans, other non-controlling interests that have the option to convert their limited partnership interests to common OP units and convertible debt securities. No effect is shown for any securities that are anti-dilutive.
The calculation of basic and diluted earnings per common share is shown below (in millions, except per share amounts):
		Year ended December 31,
		2014			2013			2012
Net income		$	747		$	325		$	63
Less: Net income attributable to non-controlling interests			(15	)		(8	)		(2	)
Net income attributable to Host Inc.			732			317			61
Assuming conversion of exchangeable senior debentures			27			—			—
Diluted income attributable to Host Inc.		$	759		$	317		$	61
Basic weighted average shares outstanding			755.4			744.4			718.2
Assuming weighted average shares for conversion of			30.3			2.4			—
exchangeable senior debentures
Assuming distribution of common shares granted under the			1.1			1.1			1.4
comprehensive stock plans, less shares assumed
purchased at market
Diluted weighted average shares outstanding (1)			786.8			747.9			719.6
Basic earnings per common share		$	0.97		$	0.43		$	0.08
Diluted earnings per common share		$	0.96		$	0.42		$	0.08
___________
-1	There were approximately 30 million and 40 million potentially dilutive shares as of December 31, 2013 and 2012, respectively, related to our exchangeable senior debentures, which shares were not included in the computation of diluted earnings per share because to do so would have been anti-dilutive for the period.
Host L.P. Earnings Per Common Unit
Basic earnings per common unit is computed by dividing net income attributable to common unitholders by the weighted average number of common units outstanding. Diluted earnings per common unit is computed by dividing net income attributable to common unitholders, as adjusted for potentially dilutive securities, by the weighted average number of common units outstanding plus other potentially dilutive securities. Dilutive securities may include units distributed to Host Inc. to support Host Inc. common shares granted under comprehensive stock plans, other non-controlling interests that have the option to convert their limited partnership interests to common OP units and convertible debt securities. No effect is shown for any securities that are anti-dilutive.
The calculation of basic and diluted earnings per common unit is shown below (in millions, except per unit amounts):
		Year ended December 31,
		2014			2013			2012
Net income		$	747		$	325		$	63
Less: Net income attributable to non-controlling interests			(6	)		(4	)		(1	)
Net income attributable to Host L.P.			741			321			62
Assuming conversion of exchangeable senior debentures			27			1			—
Diluted income attributable to Host L.P.		$	768		$	322		$	62
Basic weighted average units outstanding			748.9			738.4			713.3
Assuming weighted average units for conversion of			29.7			2.4			—
exchangeable senior debentures
Assuming distribution of common units granted under the			1			1.1			1.3
comprehensive stock plans, less units assumed
purchased at market
Diluted weighted average units outstanding (1)			779.6			741.9			714.6
Basic earnings per common unit		$	0.99		$	0.43		$	0.09
Diluted earnings per common unit		$	0.99		$	0.43		$	0.09
___________
-1	There were approximately 29 million and 40 million potentially dilutive units as of December 31, 2013 and 2012, respectively, related to our exchangeable senior debentures, which units were not included in the computation of diluted earnings per unit because to do so would have been anti-dilutive for the period.
Share-Based Payments
At December 31, 2014, 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 awards or liability awards based upon cash settlement options. 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. Awards are classified as liability awards to the extent that settlement features allow the recipient to determine percentage of the restricted stock awards withheld to meet the recipients’ tax withholding requirements. As these awards vest over a one-year period ending December 31, the value is calculated as the estimated number of shares earned during the year times the stock price at year end, less estimated forfeitures. 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. At December 31, 2014 and December 31, 2013, our exposure to risk related to our derivative instruments totaled $13 million and $4 million, respectively, and the counterparties to such instruments are investment grade financial institutions. Our credit risk exposure with regard to our cash and the $796 million available under 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 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. 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, 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
Certain prior year financial statement amounts have been reclassified to conform with the current year presentation.
New Accounting Standards
In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2014-09, Revenue from Contracts with Customers (Topic 606), which affects virtually all aspects of an entity’s revenue recognition.  The core principle of the new standard is that revenue should be recognized to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services.  The standard is effective for annual reporting periods beginning after December 15, 2016.  We have not yet completed our assessment of the effect of the new standard on our financial statements, including possible transition alternatives.

Property_and_Equipment

Property and Equipment	12 Months Ended
	Dec. 31, 2014
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,
			2014			2013
	Land and land improvements		$	1,990		$	1,973
	Buildings and leasehold improvements			13,336			13,435
	Furniture and equipment			2,217			2,223
	Construction in progress			209			176
				17,752			17,807
	Less accumulated depreciation and amortization			(7,177	)		(6,812	)
			$	10,575		$	10,995
	The aggregate cost of real estate for federal income tax purposes is approximately $10.4 billion at December 31, 2014.

Investments_in_Affiliates

Investments in Affiliates	12 Months Ended
	Dec. 31, 2014
Investments In And Advances To Affiliates Schedule Of Investments [Abstract]
Investments in Affiliates	3	Investments in Affiliates
	We own investments in joint ventures that are accounted for under the equity method of accounting. The debt of the Euro JV and Asia/Pacific JV is non-recourse to, and not guaranteed by, us. The debt of the Hyatt Place JV and the construction loan for the Maui JV is jointly and/or severally guaranteed by the partners of the joint ventures. Investments in affiliates consist of the following (in millions):
			As of December 31, 2014
			Ownership			Our			Our Portion
			Interests			Investment			of Debt			Total Debt		Assets
	Euro JV		32.1 - 33.4		%	$	348		$	388		$	1,186	Nineteen hotels in Europe
	Asia/Pacific JV			25	%		22			9			37	One hotel in Australia and a 36% interest in three operating hotels and four hotels under development in India
	Maui JV			67	%		61			64			96	131-unit vacation ownership project in Maui, Hawaii
	Hyatt Place JV			50	%		7			16			31	One hotel in Nashville, Tennessee
	Philadelphia			11	%		(5	)		25			227	One hotel in Philadelphia, PA
	Marriott
	Downtown
	Total					$	433		$	502		$	1,577
			As of December 31, 2013
			Ownership			Our			Our Portion
			Interests			Investment			of Debt			Total Debt		Assets
	Euro JV		32.1 - 33.4		%	$	374		$	444		$	1,363	Nineteen hotels in Europe
	Asia/Pacific JV			25	%		20			10			39	One hotel in Australia and a 36% interest in two operating hotels and five hotels under development in India
	Maui JV			67	%		16			34			50	131-unit vacation ownership project in Maui, Hawaii
	Hyatt Place JV			50	%		5			12			24	One hotel in Nashville, Tennessee
	Total					$	415		$	500		$	1,476
	European Joint Venture
	We own general and limited partner interests in the Euro JV that consists of two separate funds, with the other partners thereof including 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% ownership 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 ownership 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 2021, subject to two one-year extensions. As of December 31, 2014, the total assets of the Euro JV are approximately €1.9 billion ($2.3 billion). As asset manager of the Euro JV funds, we earn asset management fees based on the amount of equity commitments and equity invested, which in 2014, 2013 and 2012 were approximately $16 million, $15 million and $13 million, respectively.
	As of December 31, 2014, the partners have funded approximately €647 million, or 94%, of the total equity commitment for Euro JV Fund I and €364 million, or 81%, of the total equity commitment for Euro JV Fund II. On April 17, 2013 and June 25, 2013, the Euro JV partners executed amendments of the Euro JV partnership agreement in order to provide the funds necessary for a €95 million principal reduction associated with the refinancing of a mortgage loan secured by a portfolio of six properties, as well as to provide funds for general joint venture purposes, to extend the commitment period of Euro JV Fund I to December 2015 and to extend the commitment period of Euro JV Fund II by one year to June 2014 through the exercise of the extension option. Effective June 27, 2014, the Euro JV partners executed an amendment and restatement of the Euro JV partnership agreement which allows contributions to the joint venture in the form of loans, as opposed to only equity contributions and amended the agreement to extend the commitment period for Euro JV Fund II by one year to June 27, 2015. The partners expect to utilize the remaining equity commitment for Euro JV Fund I for capital expenditures and financing needs.
	In April 2014, the Euro JV made a cash distribution to its partners totaling €37 million, of which Host’s share was €12 million ($17 million).
	On September 30, 2014, Euro JV Fund II acquired a 90% ownership interest in the 394-room Grand Hotel Esplanade in Berlin. The hotel was acquired based on an aggregate gross value of €81 million ($102 million), and is subject to a mortgage loan of approximately €48 million ($61 million) with a margin of 219 basis points over the Euro Interbank Offered Rate (“Euribor”). The loan is non-recourse to the Euro JV. We contributed approximately €10 million ($14 million) to the Euro JV in connection with this acquisition, partially funded through a draw on our credit facility.
	On October 16, 2014, the Euro JV Fund I sold the 350-room Sheraton Skyline Hotel & Conference Centre for £33 million ($53 million) plus certain customary closing adjustments and recognized a gain of approximately £8 million ($12 million). In connection with the sale, the Euro JV repaid the associated mortgage loan of £21.1 million ($34 million).
	On August 29, 2013, Euro JV Fund II acquired the 465-room Sheraton Stockholm Hotel in Sweden for approximately €102 million ($135 million). In connection with the acquisition, the Euro JV entered into a €61 million ($81 million) mortgage loan with an interest rate of 5.67% that matures in 2018. The loan is non-recourse to the Euro JV. We contributed approximately €14 million ($19 million) to the Euro JV in connection with this acquisition, funded through a draw on our credit facility.
	On October 22, 2013, Euro JV Fund II sold the Courtyard Paris La Defense West – Colombes for €19 million ($26 million) plus certain customary closing adjustments and recognized a gain of approximately €1.7 million ($2.3 million). In connection with the sale, the Euro JV repaid the associated €10.4 million ($14.4 million) mortgage loan.
	The Euro JV has €980 million ($1,186 million) of mortgage debt, including debt incurred in its recent acquisitions, all of which is non-recourse to us. A default of the Euro JV mortgage debt does not trigger a default under any of our debt. On July 3, 2014, the Euro JV refinanced the €69 million ($94 million) loan secured by three properties in Brussels with Natixis, reducing the outstanding principal amount of the mortgage loan to €47.8 million using funds provided by the partners. Interest on the new loan is a combination of fixed and floating for an initial all-in rate of 2.0% and has a maturity date of July 3, 2019. On June 20, 2013, the Euro JV refinanced a mortgage loan secured by six properties, extending the maturity date to 2016, with a one year extension option subject to meeting certain conditions. The loan has a fixed and floating rate component with an initial interest rate of 4.5%. In connection with the refinancing, the joint venture reduced the outstanding principal amount of the mortgage loan from €337 million ($446 million) to €242 million ($320 million). We funded our portion of the principal reduction, as well as certain closing costs and other funding requirements, through a €37 million ($48 million) draw on our credit facility.
	We have entered into four foreign currency forward sale contracts in order to hedge the foreign currency exposure resulting from the eventual repatriation of our net investment in the Euro JV. The forward purchases will occur between August 2015 and May 2017. We have hedged €177 million (approximately $228 million) of our investment through these contracts and designated draws under our credit facility in Euros. See Note 12 – “Fair Value Measurement” for further information.
	Our unconsolidated investees analyze their properties for impairment throughout the year when events or circumstances occur that indicate the carrying amount may not be recoverable. A property is considered to be impaired when the sum of the future undiscounted cash flows over its remaining estimated holding period is less than the carrying amount of the asset. If a property is impaired, an expense is recorded for the difference between the fair value and the carrying amount of the hotel. In 2013, we recognized an expense of approximately $15 million reflecting our share of the impairment of one such property in equity in earnings (losses) of affiliates.
	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 after a period of seven years, which occurs in March of 2015. 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 expired in March of 2012. As a result, unanimous approval of the joint venture partners is necessary to fund additional acquisitions. Certain funding commitments remain, however, related to existing investments.
	As of December 31, 2014, the Asia/Pacific JV partners have invested approximately $83 million (of which our share was $21 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. This joint venture owns two hotels in Bangalore and one in Chennai and is developing four additional properties in Chennai and Delhi. The three hotels that are operating and the four hotels under development will be managed by Accor under the Pullman, ibis and Novotel brands.
	Maui Joint Venture
	In December 2014, we opened Hyatt Ka’anapali Beach, A Hyatt Residence Club, in which we hold a 67% non-controlling interest. The 131–unit vacation ownership project in Maui, Hawaii is adjacent to our Hyatt Regency Maui Resort & Spa. The development costs were funded with a $110 million construction loan and member contributions. As of December 31, 2014, $86 million has been drawn on the construction loan. The construction loan is jointly and severally guaranteed by both partners and matures in December 2015. Additionally, the joint venture has issued $10 million of debt to fund loans to the timeshare owners, which loans all are nonrecourse to Host.  As of December 31, 2014, we have contributed land valued at $36 million, approximately $8 million of pre-formation expenditures and additional contributions of $43 million. Development costs as of December 31, 2014 totaled $180 million. In 2014, sales of the timeshares totaled $54 million.
	Combined Financial Information of Unconsolidated Investees
	Combined summarized balance sheet information for our affiliates is as follows (in millions):
			As of December 31,
			2014			2013
	Property and equipment, net		$	2,369		$	2,362
	Timeshare inventory			178			106
	Other assets			424			376
	Total assets		$	2,971		$	2,844
	Debt		$	1,577		$	1,476
	Other liabilities			163			135
	Equity			1,231			1,233
	Total liabilities and equity		$	2,971		$	2,844
	Combined summarized operating results for our affiliates is as follows (in millions):
			Year ended December 31,
			2014			2013			2012
	Total revenues		$	776		$	617		$	428
	Operating expenses
	Expenses			(568	)		(489	)		(346	)
	Depreciation and amortization			(91	)		(131	)		(56	)
	Operating profit (loss)			117			(3	)		26
	Interest expense			(79	)		(59	)		(43	)
	Gain on disposition			12			2			—
	Net income (loss)		$	50		$	(60	)	$	(17	)

Debt

Debt	12 Months Ended
	Dec. 31, 2014
Debt Disclosure [Abstract]
Debt	4	Debt
	Debt consists of the following (in millions):
			As of December 31,
			2014				2013
	Series Q senior notes, with a rate of 6¾% due June 2016		$	—			$	150
	Series V senior notes, with a rate of 6% due November 2020			500				500
	Series X senior notes, with a rate of 5⅞% due June 2019			498				497
	Series Z senior notes, with a rate of 6% due October 2021			300				300
	Series B senior notes, with a rate of 5¼% due March 2022			350				350
	Series C senior notes, with a rate of 4¾% due March 2023			450				450
	Series D senior notes, with a rate of 3¾% due October 2023			400				400
	2009 Exchangeable Senior Debentures, with a rate of 2½% due October 2029			386				371
	Total senior notes			2,884				3,018
	Credit facility revolver			204				446
	Credit facility term loan due June 2017			500				500
	Mortgage debt (non-recourse), with an average interest rate of 5.0% and 4.1% at			404				709
	December 31, 2014 and 2013, respectively, maturing through January 2024
	Other			—				86
	Total debt		$	3,992			$	4,759
	Senior Notes
	General. Under the terms of our senior notes indenture, which includes our Exchangeable Senior Debentures, our senior notes are equal in right of payment with all of our unsubordinated indebtedness and senior to all of our subordinated obligations. The face amount of our senior notes as of December 31, 2014 and 2013 was $2.9 billion and $3.1 billion, respectively. The senior notes balance as of December 31, 2014 and 2013 includes discounts of approximately $16 million and $32 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, 2014, we are in compliance with all of these covenants.
	We completed the following senior notes transactions:
	—	In February 2014, we redeemed the remaining $150 million 6¾ Series Q senior notes due 2016 for an aggregate price of $152 million.
	—	We redeemed $400 million ($200 million in June 2013 and $200 million in September 2013) of our 6¾% Series Q senior notes due 2016, for an aggregate price of $404 million, using proceeds from debt issuances and asset dispositions.
	—	On March 19, 2013, we issued $400 million of our 3 3⁄4% Series D senior notes due October of 2023 for net proceeds of approximately $396 million. The net proceeds from the issuance of the Series D senior notes, together with cash on hand, were used to redeem the $400 million of our 9% Series T senior notes due 2017 at an aggregate price of $418 million in May 2013.
	—	In March 2013, holders of $174 million face amount of our 31⁄4% exchangeable senior debentures (the “2004 Debentures”) elected to exchange their debentures for shares of Host Inc. common stock totaling approximately 11.7 million shares, rather than receive the cash redemption proceeds. In connection with this exchange, Host L.P. issued 11.5 million common OP units. The remaining $1 million of debentures were redeemed for cash.
	Exchangeable Debentures. As of December 31, 2014, we have $400 million of 21⁄2% exchangeable senior debentures outstanding that were issued on December 22, 2009 (the “2009 Debentures”). The 2009 Debentures are equal in right of payment with all of our other senior notes. Holders have the right to require us to purchase the 2009 Debentures at a price equal to 100% of the principal amount outstanding plus accrued interest (the “put option”) on October 15, 2015 and on certain subsequent dates. Holders of the 2009 Debentures also have the right to exchange the 2009 Debentures prior to maturity under certain conditions, including at any time at which the closing price of Host Inc.’s common stock is more than 130% ($16.71) of the exchange price per share for at least 20 of the last 30 consecutive trading days of the calendar quarter or at any time up to two days prior to the date on which the 2009 Debentures have been called for redemption. We can redeem for cash all, or part of, any of the 2009 Debentures at any time subsequent to October 20, 2015, at a redemption price of 100% of the principal amount plus accrued interest. If, at any time, we elect to redeem the 2009 Debentures and the exchange value exceeds the cash redemption price, we would expect the holders to elect to exchange the 2009 Debentures at the respective exchange value rather than receive the cash redemption price. The exchange value is equal to the applicable exchange rate multiplied by the price of Host Inc.’s common stock. Upon exchange, the 2009 Debentures would be exchanged for Host Inc.’s common stock, cash, or a combination thereof, at our option. Based on Host Inc.’s stock price at December 31, 2014, the if-converted value of the 2009 Debentures would exceed the outstanding principal amount by $339 million. As of December 31, 2014, the closing price of Host Inc.‘s common stock exceeded 130% of the exchange price for more than 20 of 30 consecutive trading days. Therefore, the 2009 Debentures are exchangeable by holders through March 31, 2015. Currently, each $1,000 Debenture would be exchanged for 77.8265 Host Inc. common shares (for an equivalent per share price of $12.85), for a total of 31.1 million shares.
	We separately account for the liability and equity components of our 2009 Debentures in order to reflect the fair value of the liability component based on our non-convertible borrowing cost at the issuance date. Accordingly, we recorded the liability components of the 2009 Debentures at fair value as of the date of issuance and will amortize the resulting discount as an increase to interest expense through the initial put option date of the 2009 Debentures, which is the expected life of the debt. However, there is no effect of this accounting treatment on our cash interest payments. We measured the fair value of the liability components of the 2009 Debentures at issuance based on an effective interest rate of 6.9%. The initial allocations between the liability and equity components of the 2009 Debentures, net of the original issue discount, based on the effective interest rate at the time of issuance was $316 million and $82 million, respectively. As of December 31, 2014, the debt carrying value and unamortized discount were $386 million and $14 million, respectively.
	Interest expense recorded for our exchangeable senior debentures (including interest expense for debentures redeemed in 2013 and 2012) consists of the following (in millions):
			Year ended December 31,
			2014				2013			2012
	Contractual interest expense (cash)		$	10			$	10		$	19
	Non-cash interest expense due to discount amortization			16				15			17
	Total interest expense		$	26			$	25		$	36
	Authorization for Repurchase of Senior Notes and Exchangeable Senior Debentures. In February 2015, Host Inc.’s Board of Directors authorized repurchases of up to $500 million of senior notes, exchangeable senior debentures and mortgage debt (other than in accordance with their terms).
	Credit Facility. On June 27, 2014, we entered into a new 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, New Zealand dollars, Japanese yen, Euros, British pound sterling and, if available to the lenders, Mexican peso, of up to the foreign currency equivalent of $500 million, subject to a lower amount in the case of New Zealand dollar and Mexican peso borrowings. The credit facility also provides 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 credit facility has an initial scheduled maturity of June 2018, with two six-month renewal options. The credit facility contained a term loan facility of $500 million, which replaced and refinanced the term loan under our prior facility of like amount. The term loan facility has an initial scheduled maturity of June 2017, with two one-year renewal options, resulting in a maturity for the entire credit facility in June 2019, if all renewal options are exercised, subject to certain conditions, including the payment of an extension fee and the accuracy of representations and warranties.
	We had the following transactions under this credit facility during 2014 and 2013 (draws used for bridge financing to facilitate transactions are not included in the below discussion):
	—	On January 10, 2014, we repaid $225 million on the revolver portion of our credit facility and as of December 31, 2014, we have $796 million of available capacity.
	—	In 2013, we drew $68 million in net proceeds in Euros on the revolver portion of our credit facility, primarily to facilitate acquisitions and a debt refinancing related to our investment in the Euro JV.
	—	In 2013, we also drew $118 million of net proceeds of the revolver portion of our credit facility in U.S. dollars (net of a $7 million repayment of our draw in Australian dollars) primarily to facilitate the redemption of the Series Q senior notes.
	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 under the credit facility. 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 charges 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 included in interest expense on our consolidated statement 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, 2014, we are in compliance with the financial covenants under our credit facility.
	Collateral and Guarantees. The credit facility initially does not include any subsidiary guarantees or pledges of equity interests in our subsidiaries, and the guarantees and pledges are required only 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. In the event that such guarantee and pledge requirement is triggered, the guarantees and pledges ratably would benefit the credit facility, as well as the notes outstanding under Host L.P.’s senior notes indenture, interest rate and currency hedges and certain other hedging and bank product arrangements with lenders that are parties to the credit facility. Even when triggered, the guarantees and pledges only would be required by certain U.S. and Canadian subsidiaries of Host L.P. and a substantial portion of our subsidiaries would provide neither guarantees nor pledges of equity interests. As of December 31, 2014, our leverage ratio was 2.6x.
	Interest and Fees. We pay interest on revolver borrowings under the credit facility at floating rates equal to LIBOR plus a margin ranging from 87.5 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, 2014, we are able to borrow at a rate of LIBOR plus 100 basis points and pay a facility fee of 20 basis points. Interest on the term loan consists of floating rates plus a margin ranging from 90 to 175 basis points (depending on Host L.P.’s unsecured long-term debt rating). Based on Host L.P.’s unsecured long-term debt rating at December 31, 2014, the margin is 112.5 basis points for an all-in interest rate of 1.29%.
	Other Covenants and Events of Default. The credit facility contains restrictive covenants on customary matters. Certain covenants become less restrictive at any time that our leverage ratio falls 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, 2014, we have mortgage debt secured by 10 assets, with an average interest rate of 5.0%, which mortgage debt matures between 2016 and 2024. Interest is payable monthly. As of December 31, 2014, we are in compliance with the covenants under all of our mortgage debt obligations.
	We had the following mortgage debt issuances and repayments since January 2013:
									Maturity
	Transaction Date		Property		Rate				Date	Amount
	Issuances/Assumptions									(in millions)
	Dec-13		Harbor Beach Marriott Resort & Spa			4.75	%		1/1/24	$	150
	Repayments
	Feb-14		The Ritz-Carlton, Naples and Newport Beach Marriott Hotel			3.25	%		3/1/14		(300	)
	Dec-13		Harbor Beach Marriott Resort & Spa			5.55	%		3/1/14		(134	)
	Dec-13		The Westin Denver Downtown			8.51	%		12/11/23		(31	)
	May-13		Orlando World Center Marriott			4.75	%		7/1/13		(246	)
	Aggregate Debt Maturities
	Aggregate debt maturities are as follows (in millions):
			As of December 31, 2014
	2015		$	400
	2016			253
	2017			500
	2018			204
2019			500
Thereafter			2,150
			4,007
Unamortized (discounts) premiums, net			(16	)
Capital lease obligations			1
		$	3,992
Other
On October 30, 2014 we redeemed the $12 million 7.125% Dulles Airport Industrial Development Revenue Bonds. On June 25, 2014, we redeemed the $40 million 7.75% Philadelphia Airport Industrial Development Revenue Bonds. Additionally, on June 15, 2014, we redeemed the $32 million 7% Newark Airport Industrial Development Refunding Revenue Bonds.
Interest
The following items are included in interest expense (in millions):
		Year ended December 31,
		2014(1)				2013(1)			2012(1)
Interest expense		$	214			$	304		$	373
Amortization of debt premiums/discounts, net (2)			(16	)			(15	)		(18	)
Amortization of deferred financing costs			(8	)			(10	)		(12	)
Non-cash losses on debt extinguishments			(2	)			(13	)		(9	)
Change in accrued interest			1				16			4
Interest paid (3)		$	189			$	282		$	338
___________
-1	Interest expense and interest paid for 2014, 2013 and 2012 include cash prepayment premiums of approximately $2 million, $23 million and $21 million, respectively.
-2	Primarily represents the amortization of the debt discount on our Debentures, which is considered non-cash interest expense.
-3	Does not include capitalized interest of $7 million, $6 million and $6 million during 2014, 2013 and 2012, respectively.
Our debt repayments resulted in debt extinguishment costs included in interest expense for 2014, 2013 and 2012 of $4 million, $36 million and $30 million, respectively.

Equity_of_Host_Inc_and_Capital

Equity of Host Inc. and Capital of Host L.P.	12 Months Ended
	Dec. 31, 2014
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 755.8 million and 754.8 million were outstanding as of December 31, 2014 and 2013, respectively. Fifty million shares of no par value preferred stock are authorized; none of such preferred shares were outstanding as of December 31, 2014 and 2013.
	Capital of Host L.P.
	As of December 31, 2014, 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, 2014 and 2013, Host L.P. has 749.1 million and 748.4 million OP units outstanding, respectively, of which Host Inc. held 739.9 million and 738.9 million, respectively.
	Issuances of Common Stock and Common OP Units
	During 2013, Host Inc. issued 16.9 million shares of common stock, at an average price of $17.78 per share, for net proceeds of approximately $297 million. These issuances were made in “at-the-market” offerings pursuant to Sales Agency Financing Agreements with BNY Mellon Capital Markets, LLC and Scotia Capital (USA) Inc. In connection with the common stock issuance, Host L.P. issued 16.5 million common OP units. These issuances completed the capacity under the current agreements.
	During March 2013, $174 million of the 2004 Debentures were exchanged for shares of Host Inc. common stock, totaling approximately 11.7 million shares. In connection with the exchange, Host L.P. issued 11.5 million common OP units.
	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 through 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 2014 were considered 65% ordinary income, 22% capital gain distribution and 13% unrecaptured Section 1250 gain. The dividends that were taxable to our stockholders in 2013 were considered 96.5% ordinary income and 3.5% unrecaptured Section 1250 gain. No portion of these 2014 and 2013 dividends was considered qualified dividends subject to a reduced tax rate.
	The table below presents the amount of common dividends declared per share and common distributions per unit as follows:
			Year ended December 31,
			2014		2013		2012
	Common stock		$	0.75	$	0.46	$	0.3
	Common OP units			0.766		0.47		0.306
	On February 17, 2015, 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 15, 2015, to stockholders of record on March 31, 2015.

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2014
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 ended December 31, 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, we generally will not be subject to federal 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 corporate income taxes at regular corporate rates (including any applicable alternative minimum tax) 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 income and excise taxes on our undistributed taxable income.
	We have recorded a 100% valuation allowance of approximately $27 million against the deferred tax asset related to the net operating loss and asset tax credit carryovers as of December 31, 2014 with respect to our hotel in Mexico. There is a $4 million valuation allowance against the deferred tax asset related to the net operating loss and capital loss carryovers as of December 31, 2014 with respect to our hotels in Canada. There is a $4 million valuation allowance related to the net operating loss incurred by our office in Rio de Janeiro as of December 31, 2014. Finally, there is a $10 million valuation allowance against the deferred tax asset related to the net operating loss carryovers as of December 31, 2014 with respect to certain of our U.S. taxable REIT subsidiaries that acted as lessee pursuant to the terminated HPT leases. We expect that the remaining net operating loss and alternative minimum tax credit carryovers for U.S. federal income tax purposes will be realized. The net decrease in the valuation allowance for the year ending December 31, 2014 and December 31, 2013 is approximately $16 million and $2 million, respectively. The primary components of our net deferred tax assets are as follows (in millions):
			As of December 31,
			2014				2013
	Deferred tax assets
	Accrued related party interest		$	21			$	19
	Net operating loss and capital loss carryovers			70				85
	Alternative minimum tax credits			5				5
	Property and equipment			4				4
	Investments in domestic affiliates			3				3
	Deferred revenue and expenses			55				57
	Other			1				1
	Total gross deferred tax assets			159				174
	Less: Valuation allowance			(45	)			(61	)
	Total deferred tax assets, net of valuation allowance		$	114			$	113
	Deferred tax liabilities
	Property and equipment			(17	)			(21	)
	Investments in domestic and foreign affiliates			(8	)			(6	)
	Other			(2	)			(3	)
	Total gross deferred tax liabilities			(27	)			(30	)
	Net deferred tax assets		$	87			$	83
	At December 31, 2014, we have aggregate gross domestic and foreign net operating loss, capital loss and tax credit carryovers of approximately $204 million. We have deferred tax assets related to these loss and tax credit carryovers of approximately $70 million, with a valuation allowance of approximately $45 million. Our net operating loss carryovers expire through 2034, and our foreign capital loss carryovers have no expiration period. Our domestic alternative minimum tax credit carryovers have no expiration period and our foreign asset tax credit carryovers expire through 2017. We believe that it is more likely than not that we will be able to realize our deferred tax assets, net of valuation allowance, of $114 million in the future.
	Our U.S. and foreign income (loss) from continuing operations before income taxes was as follows (in millions):
		Year ended December 31,
		2014				2013				2012
	U.S. income (loss)	$	744			$	213			$	(22	)
	Foreign income		17				18				45
	Total	$	761			$	231			$	23
	The provision for income taxes from continuing operations consists of (in millions):
				Year ended December 31,
				2014				2013				2012
	Current	—Federal		$	3			$	2			$	3
		—State			2				4				1
		—Foreign			10				9				10
					15				15				14
	Deferred	—Federal			(1	)			4				11
		—State			(1	)			1				1
		—Foreign			1				1				5
					(1	)			6				17
	Income tax provision – continuing operations			$	14			$	21			$	31
	The differences between the income tax provision calculated at the statutory U.S. federal income tax rate of 35% and the actual income tax provision recorded for continuing operations are as follows (in millions):
			Year ended December 31,
			2014				2013				2012
	Statutory federal income tax provision – continuing operations		$	265			$	81			$	8
	Adjustment for nontaxable (income) loss of Host Inc. –			(268	)			(77	)			4
	continuing operations
	State income tax provision, net			1				5				2
	Provision for uncertain tax positions			5				2				2
	Foreign income tax provision			11				10				15
	Income tax provision – continuing operations		$	14			$	21			$	31
	Cash paid for income taxes, net of refunds received, was $22 million, $17 million, and $12 million in 2014, 2013, and 2012, respectively.
	A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in millions):
			2014				2013
	Balance at January 1		$	5			$	3
	State increases			2				—
	Other increases			3				2
	Balance at December 31		$	10			$	5
	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% and the actual income tax provision recorded each year.
	We expect an increase to the balance of unrecognized tax benefits within 12 months of the reporting date of approximately $4 million. As of December 31, 2014, the tax years that remain subject to examination by major tax jurisdictions generally include 2011-2014.
	There were no material interest or penalties recognized for the years ended December 31, 2014, 2013 and 2012.

Leases

Leases	12 Months Ended
	Dec. 31, 2014
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.
	Vornado Lease
	On July 30, 2012, we leased the retail and signage components of the New York Marriott Marquis to Vornado Realty Trust (“Vornado”). Vornado will redevelop and expand the existing retail space and a portion of the parking garage into a high-end retail space, as well as create a 25,000 square foot, block front, LED signage. The lease has a 20-year term and, over the term of the lease, each party has options that, if exercised, would result in ownership of the retail space being conveyed to Vornado at a price based on the future cash flow of the leased property. Minimum rental revenue is recognized on a straight-line basis over the term of the lease. The future minimum rental revenue under the non-cancelable lease is $12.5 million on an annual basis. Percentage rent is accrued when the specified income targets have been met.
	Ground Leases
	As of December 31, 2014, all or a portion of 35 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.
	Hospitality Properties Trust
	We owned a leasehold interest in 53 Courtyard by Marriott hotels, which were sold to Hospitality Properties Trust (“HPT”) and leased back to us in 1995. In connection with our conversion to a REIT, we entered into subleases with a subsidiary of Barceló Crestline Corporation (“Barceló”) for these properties and Barceló guaranteed rent payments to HPT as part of the sublease. We terminated the subleases effective July 6, 2010 and resumed acting as owner under the management agreements. Effective upon termination of the subleases, we recorded the operations of the hotels as opposed to rental income. We terminated the lease effective December 31, 2012. At the expiration of the lease in 2012, HPT paid us deferred proceeds related to the initial sale of approximately $51 million. Approximately $11 million related to tenant collections accounts and $5 million for working capital were received in 2013.
	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 $13 million as of December 31, 2014. However, management considers 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 on 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 leases for which we are the lessee (in millions):
			As of December 31, 2014
			Capital			Operating
			Leases			Leases
	2015		$	1		$	46
	2016			—			44
	2017			—			44
	2018			—			42
	2019			—			40
	Thereafter			—			1,572
	Total minimum lease payments		$	1		$	1,788
	Minimum payments for the operating leases have not been reduced by aggregate minimum sublease rentals from restaurants of approximately $10 million per year that are payable to us under non-cancelable subleases.
	Rent expense is included in other property-level expenses on our consolidated statements of operations and consists of (in millions):
			Year ended December 31,
			2014			2013			2012
	Minimum rentals on operating leases		$	48		$	50		$	117
	Additional rentals based on sales			32			32			31
	Rental payments based on real estate tax assessments			—			24			23
	Less: sublease rentals			(3	)		(3	)		(3	)
			$	77		$	103		$	168

Employee_Stock_Plans

Employee Stock Plans	12 Months Ended
	Dec. 31, 2014
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 liabilities 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 awards of Host Inc.’s common stock and options to purchase our common stock and the Employee Stock Purchase Plan (“ESPP”). At December 31, 2014, there were approximately 17 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 or liability awards. Equity awards are measured based on their fair value as of the date of grant. In contrast, liability awards are re-measured to fair value each reporting period.
	During 2014, 2013 and 2012, we recorded stock-based compensation expense of approximately $22 million, $18 million and $16 million, respectively. Shares granted in 2014, 2013 and 2012 totaled 2.0 million, 2.2 million and 1.8 million, respectively, while 1.3 million, 1.2 million and 0.9 million shares, respectively, vested during those years.
	Senior Executive Plan
	During 2014, Host Inc. granted 1.5 million shares of restricted stock awards and 0.4 million shares of stock option awards, to senior executives (the “Annual Plan”), which amount represents the maximum number of shares that can be earned during the year if performance is at the “high” level of achievement. The stock option awards have an exercise price of $19.57 per share for performance year 2014. The restricted stock awards and stock option awards vest on an annual basis; therefore, no awards were outstanding at December 31, 2014.
	Restricted stock awards
	Vesting of restricted stock awards is based on (1) the achievement of relative total shareholder return (“TSR”) and (2) the company and personal performance of employees attributable to specific management business objectives. Approximately 50% of the restricted stock awards 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, with the remaining 50% based on the achievement of management business objectives. Restricted stock awards granted to U.S. senior executives are classified as liability awards, due to settlement features that allow the recipient to have a percentage of the restricted stock awards withheld to meet tax requirements in excess of the statutory minimum withholding requirements. The fair value of these shares is adjusted at each balance sheet date and, at year end, is equal to the number of shares earned during the year at the December 31, 2014 stock price. Of the awards granted in 2014, 94% were classified as liability awards. In contrast, restricted stock awards granted to senior executives operating out of our international offices do not have this settlement feature and are considered equity awards. The fair value of these equity awards is based on the fair value on the grant date, and is not adjusted for subsequent movements in fair value.
	During 2014, 2013 and 2012, we recorded compensation expense of approximately $18 million, $14 million and $12 million, respectively, related to the restricted stock 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, 2014:
			Year ended December 31,
			2014					2013					2012
			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			1.5			18		1.7			16		1.6			14
	Vested (1)			(0.8	)		24		(0.8	)		19		(0.6	)		16
	Forfeited/expired			(0.7	)		24		(0.9	)		19		(1.0	)		16
	Balance, at end of year			—			—		—			—		—		—
	Issued in calendar year (1)			0.4			19		0.3			19		0.8			16
	___________
	-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 0.4 million shares issued in 2014 include shares vested at December 31, 2013, after adjusting for shares withheld to meet employee tax requirements. The shares withheld for employee tax requirements were valued at $6.1 million, $5.5 million and $9.5 million, for 2014, 2013 and 2012, respectively.
	Stock Option Awards
	As of December 31, 2014, 0.8 million shares of stock option awards were outstanding and exercisable, with a weighted average remaining life of 8 years and a weighted average exercise price of $17.35 per share. During 2014, 2013 and 2012, stock option grants totaled 393,000, 420,000 and 201,000, respectively. Stock option compensation expense was $1.8 million, $1.8 million and $1.6 million during 2014, 2013 and 2012, respectively, and all stock option awards outstanding as of December 31, 2014 were fully vested. The stock option awards are equity classified awards, as they do not include cash settlement features. We expense stock option awards over the vesting period based on the estimated fair value of the options at the grant date using a binomial pricing model. The utilization of the binomial model requires us to make certain estimates related to the volatility of the share price of our common stock, risk-free interest rates and the amount of our awards expected to be forfeited, and our expected dividend yield. To calculate the fair value of stock option awards granted from 2012 to 2014, we assumed (i) a volatility ranging between 34% and 66%, (ii) a risk free rate ranging between 1.0% and 1.8%, (iii) a dividend yield of 3.5%, and (iv) an expected life of 5.5 years.
	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 awards are time-based equity awards that vest within three years of the grant date and 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 10% discount of the lower of the beginning and ending stock price each quarter. During 2014, 2013 and 2012, we granted 118,000 shares, 116,000 shares and 84,000 shares, respectively, under both of these programs and recorded expense of $2.2 million, $2.0 million and $1.9 million, respectively.

Profit_Sharing_and_Postemploym

Profit Sharing and Postemployment Benefit Plans	12 Months Ended
	Dec. 31, 2014
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 recorded liability for this obligation is not material. Payments for these items were not material for the three years ended December 31, 2014.

Dispositions

Dispositions	12 Months Ended
	Dec. 31, 2014
Discontinued Operations And Disposal Groups [Abstract]
Dispositions	10	Dispositions
	We disposed of five hotels in 2014, five hotels in 2013, and three hotels in 2012. Effective January 1, 2014, we adopted ASU 2014-08, Reporting for Discontinued Operations. As a result, operations and any gain or loss on sale of hotels sold subsequent to December 31, 2013 will continue to be reported in continuing operations. The results of properties sold in 2013 and 2012, including the gain on sale, will continue to be reported in discontinued operations
	The following table provides summary results of operations for the five hotels sold in 2014, which are included in continuing operations (in millions):
		Year ended December 31,
			2014		2013
	Revenues		$	72	$	182
	Income before taxes			8		19
	Gain on disposals			229		—
	Dispositions in 2014 included (i) the Dayton Marriott for $21 million, (ii) the Greensboro-High Point Marriott Airport for $19 million, (iii) the Tampa Marriott Waterside Hotel & Marina for $199 million, (iv) Courtyard Nashua for $10 million, and (v) an 89% controlling interest in the Philadelphia Marriott Downtown based on a gross sales price of $303 million.
	In connection with the sale of Tampa Waterside Hotel & Marina, Greensboro-High Point Marriott Airport and the 89% interest in Philadelphia Marriott Downtown, we recorded gains of approximately $115 million, $3 million, and $111 million, respectively.
	The following table provides summary results of operations for the five hotels sold in 2013 and the three hotels sold in 2012, which are included in discontinued operations (in millions):
			Year ended December 31,
			2013		2012
	Revenues		$	104	$	264
	Income before taxes			22		24
	Gain on disposals, net of tax			97		48
	Net income (loss) attributable to Host Inc. is allocated between continuing and discontinued operations as follows (in millions):
			Year ended December 31,
			2013		2012
	Continuing operations, net of tax		$	203	$	(10	)
	Discontinued operations, net of tax			114		71
	Net income attributable to Host Inc.		$	317	$	61
	Net income (loss) attributable to Host L.P. is allocated between continuing and discontinued operations as follows (in millions):
			Year ended December 31,
			2013		2012
	Continuing operations, net of tax		$	206	$	(9	)
	Discontinued operations, net of tax			115		71
	Net income attributable to Host L.P.		$	321	$	62

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2014
Business Combinations [Abstract]
Acquisitions	11	Acquisitions
	Business Combinations
	We acquired two hotels during 2014 and recorded $2 million of acquisition related expenses and acquired one hotel during 2013 and recorded $1 million of acquisition related expenses. For 2014 and 2013, our business combinations were as follows:
	—	On August 11, 2014, we acquired the 242-room b2 miami downtown hotel for approximately $58 million.
	—	On January 21, 2014, we acquired the 151-room Powell Hotel in San Francisco, California, including retail space and the fee simple interest in the land, for approximately $75 million.
	—	On May 31, 2013, we acquired the 426-room Hyatt Place Waikiki Beach in Honolulu, Hawaii for approximately $138.5 million.
	Accounting for the acquisition of a hotel property or an entity as a purchase transaction requires an allocation of the purchase price to the assets acquired and the liabilities assumed in the transaction at their respective estimated fair values. The purchase price allocations are estimated based on current available information.
	The following table summarizes the estimated fair value of the assets acquired and liabilities assumed for our 2014 and 2013 hotel acquisitions (in millions):
			As of December 31,
			2014			2013
	Property and equipment		$	131		$	138
	FF&E Reserves and other assets			3			1
	Total assets			134			139
	Other liabilities			(1	)		—
	Net assets acquired		$	133		$	139
	Our summarized unaudited consolidated pro forma results of operations, assuming the 2014 and 2013 hotel acquisitions occurred on January 1, 2013 and 2012, respectively, and excluding the acquisition costs discussed above, are as follows (in millions, except per share and per unit amounts):
			Year ended December 31,
			2014			2013
	Revenues		$	5,362		$	5,189
	Income from continuing operations			751			214
	Net income			751			329
	Host Inc.:
	Net income attributable to Host Inc.		$	736		$	321
	Basic earnings per common share:
	Continuing operations		$	0.97		$	0.27
	Discontinued operations			—			0.16
	Basic earnings per common share		$	0.97		$	0.43
	Diluted earnings per common share:
	Continuing operations		$	0.97		$	0.28
	Discontinued operations			—			0.15
	Diluted earnings per common share		$	0.97		$	0.43
	Host L.P.:
	Net income attributable to Host L.P.		$	745		$	325
	Basic earnings per common share:
	Continuing operations		$	0.99		$	0.29
	Discontinued operations			—			0.15
	Basic earnings per common share		$	0.99		$	0.44
	Diluted earnings per common share:
	Continuing operations		$	0.99		$	0.29
	Discontinued operations			—			0.15
	Diluted earnings per common share		$	0.99		$	0.44
	For 2014 and 2013, we have included $39 million and $15 million of revenues, respectively, and $7 million and $2 million of net income, respectively, in our consolidated statements of operations related to the operations of the hotels acquired in 2014 and 2013.
	New Development and Other Asset Acquisitions
	For 2014 and 2013, our new development and other asset acquisitions were as follows:
	—	In the fourth quarter of 2014, we completed construction and opened the 149-room Novotel and 256-room ibis Rio de Janeiro Parque Olimpico in Barra da Tijuca, both managed by Accor. We have invested approximately R$139 million ($65 million) in these hotels as of December 31, 2014.
	—	On December 10, 2013, we made the final incremental payment of $19.9 million for the purchase of the fee simple interest in the land at the New York Marriott Marquis Times Square. In addition, $25 million of the payments made pursuant to the terms of the ground lease have been attributed to the purchase of the land. The purchase was completed in conjunction with our 2012 lease of the existing retail space to Vornado and its on-going redevelopment.

Fair_Value_Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Fair Value Measurements	12	Fair Value Measurements
	Overview
	Our recurring fair value measurements consist of the valuation of our derivative instruments, all of which are designated as accounting hedges. Non-recurring fair value measurements during 2014 and 2013 consisted of the impairment of two of our hotel properties, which were both sold during 2014.
	The following table details the fair value of our financial assets and liabilities that are required to be measured at fair value on a recurring basis, as well as non-recurring fair value measurements that we completed during 2014 and 2013 due to the impairment of non-financial assets (in millions):
							Fair Value at Measurement Date Using
			Balance at December 31,				Quoted Prices in Active Markets for Identical Assets (Level 1)				Significant Other Observable Inputs				Significant Unobservable Inputs
			2014								(Level 2)				(Level 3)
	Fair Value Measurements on a Recurring Basis:
	Assets
	Foreign currency forward sale contracts (1)		$	13			$	—			$	13			$	—
	Liabilities
	Interest rate swap derivatives (1)			(2	)			—				(2	)			—
	Fair Value Measurements on a Non-recurring Basis:
	Impaired hotel properties sold (2)			—				—				—				18
							Fair Value at Measurement Date Using
			Balance at December 31,				Quoted Prices in Active Markets for Identical Assets (Level 1)				Significant Other Observable Inputs				Significant Unobservable Inputs
			2013								(Level 2)				(Level 3)
	Fair Value Measurements on a Recurring Basis:
	Assets
	Interest rate swap derivatives (1)		$	1			$	—			$	1			$	—
	Foreign currency forward sale contracts (1)			3				—				3				—
	Liabilities
	Interest rate swap derivatives (1)			(3	)			—				(3	)			—
	Foreign currency forward sale contracts (1)			(6	)			—				(6	)			—
	Fair Value Measurements on a Non-recurring Basis:
	Impaired hotel properties held and used (2)			9				—				—				9
	___________
	-1	These derivative contracts have been designated as hedging instruments.
	-2	The fair value measurements are as of the measurement date of the impairment and may not reflect the book value as of December 31, 2014 and 2013, respectively.
	Impairment
	During 2014, an impairment loss of $6 million was recorded related to the Dayton Marriott. The fair value was based on expected sale proceeds of the property, which property was sold on December 17, 2014. During 2013, an impairment loss of approximately $1 million was recorded related to the Courtyard Nashua. The fair value was based on expected sale proceeds of the property, which property was sold on February 12, 2014. The impairment losses are included in depreciation expense.
	Derivatives and Hedging
	Interest rate swap derivatives designated as cash flow hedges. We have designated our floating-to-fixed interest rate swap derivatives as cash flow hedges. The purpose of the interest rate swaps is to hedge against changes in cash flows (interest payments) attributable to fluctuations in variable rate debt. The derivatives are valued based on the prevailing market yield curve on the date of measurement. We also evaluate counterparty credit risk when we calculate the fair value of the swaps. Changes in the fair value of the derivatives are recorded to other comprehensive income (loss) on the accompanying balance sheets. The hedges were fully effective as of December 31, 2014. The following table summarizes our interest rate swap derivatives designated as cash flow hedges (in millions):
												Change in Fair Value
												Gain (Loss)
			Total Notional			Maturity		Swapped		All-in-		Year ended December 31,
	Transaction Date		Amount			Date		Index		Rate		2014			2013
	November 2011 (1)		A$	62		Nov-16		Reuters BBSY		6.70%		$	—		$	1
	February 2011 (2)		NZ$	79		Feb-16		NZ$ Bank Bill		7.15%		$	—		$	2
	___________
	-1	The swap was entered into in connection with the A$86 million ($71 million) mortgage loan on the Hilton Melbourne South Wharf.
	-2	The swap was entered into in connection with the NZ$105 million ($82 million) mortgage loan on seven properties in New Zealand.
	Foreign Investment Hedging Instruments. We have five foreign currency forward sale contracts that hedge a portion of the foreign currency exposure resulting from the eventual repatriation of our net investment in foreign operations. These derivatives are considered hedges of the foreign currency exposure of a net investment in a foreign operation and are marked-to-market with changes in fair value recorded to other comprehensive income (loss) within the equity portion of our balance sheet. 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. The following table summarizes our foreign currency forward sale contracts (in millions):
	Currently Outstanding													Change in Fair Value - All Contracts
			Total
			Transaction					Total						Gain (Loss)
			Amount in					Transaction
	Transaction Date		Foreign					Amount				Forward Purchase		Year ended December 31,
	Range		Currency					in Dollars				Date Range		2014			2013
	July 2011-May 2014		€		100			$	135			August 2015-May 2017		$	18		$	(5	)
	Nov-14		C$		25			$	22			Nov-16		$	1		$	—
	In addition to the foreign currency forward sale contracts, we have designated a portion of the foreign currency draws on our credit facility as hedges of net investments in foreign operations. As a result, currency translation adjustments in the designated credit facility draws are recorded to other comprehensive income (loss) within the equity portion of our balance sheet, which adjustments offset a portion of the translation adjustment related to our foreign investments. The following table summarizes the draws on our credit facility that are designated as hedges of net investments in international operations (in millions):
			Balance			Balance			Gain (Loss)
			Outstanding			Outstanding in			Year ended December 31,
	Currency		US$			Foreign Currency			2014			2013
	Canadian dollars (1)		$	27		C$	31		$	2		$	2
	Euros		$	93		€	77		$	13		$	-5
	___________
	-1	We have drawn an additional $65 million on the credit facility in Canadian dollars that has not been designated as a hedging instrument.
	Other Assets and Liabilities
	Fair Value of Other Financial Assets and Liabilities. We did not elect the fair value measurement option for any of our other financial assets or 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 and the Exchangeable Senior Debentures 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 assets and liabilities and other financial instruments are shown below (in millions):
			As of December 31,
			2014								2013
			Carrying Amount				Fair Value				Carrying Amount				Fair Value
Financial liabilities
Senior notes (Level 1)		$	2,498			$	2,668			$	2,647			$	2,766
Exchangeable Senior Debentures (Level 1)			386				739				371				603
Credit facility (Level 2)			704				704				946				946
Mortgage debt and other, excluding capital leases			403				413				793				802
(Level 2)

Hotel_Management_Agreements_an

Hotel Management Agreements and Operating and License Agreements	12 Months Ended
	Dec. 31, 2014
Contractors [Abstract]
Hotel Management Agreements and Operating and License Agreements	13	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 operation under the designated brand. The hotel brands of three of our managers, Marriott, Starwood and Hyatt, represent 56%, 25% and 12% 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. For the majority of our properties, 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 15 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 Starwood-managed hotels, the base management fee only is 1% of annual gross revenues, but that amount is supplemented by license fees payable to Starwood under a separate license agreement pertaining to the designated brand, including rights to use trademarks, service marks and logos, matters relating to compliance with certain brand standards and policies, and the provision of certain system programs and centralized services. Under the license agreement Starwood generally receives 5% of gross revenues attributable to room sales and 2% of gross revenues attributable to food and beverage sales in addition to a base management fee.
	As part of 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 will sponsor a guest rewards program, the costs of which will be 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, Starwood 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_Segmen

Geographic and Business Segment Information	12 Months Ended
	Dec. 31, 2014
Segment Reporting [Abstract]
Geographic and Business Segment Information	14	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 office buildings) 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 six countries. 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):
		2014				2013				2012
		Revenues		Property and		Revenues		Property and		Revenues		Property and
				Equipment, net				Equipment, net				Equipment, net
	United States	$	5,077	$	10,111	$	4,895	$	10,498	$	4,791	$	11,095
	Australia		39		102		40		106		42		133
	Brazil		36		82		30		76		33		39
	Canada		87		82		97		89		95		97
	Chile		32		44		34		54		37		63
	Mexico		29		26		24		32		25		26
	New Zealand		54		128		46		140		36		135
	Total	$	5,354	$	10,575	$	5,166	$	10,995	$	5,059	$	11,588

Guarantees_and_Contingencies

Guarantees and Contingencies	12 Months Ended
	Dec. 31, 2014
Guarantees [Abstract]
Guarantees and Contingencies	15	Guarantees and Contingencies
	We have 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 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 $13 million as of December 31, 2014.
	—	In connection with the sale of two hotels in January 2005, we remain contingently liable for the amounts due under the respective ground leases. The future minimum lease payments are approximately $12 million through the full term of the leases, including renewal options. We believe that the likelihood of any material payments related to these ground leases is remote, and in each case, we have been indemnified by the purchaser of the hotel.
	Guarantees and environmental liabilities that are recorded on our consolidated balance sheet include:
	—	In connection with the sale of the Atlanta Marriott Marquis in January 2013, we retained $5 million of contingent liabilities related to potential environmental liabilities.
	—	In connection with the sale of the Ritz-Carlton San Francisco hotel in June 2013, we agreed to guarantee the hotel’s operating income through December 31, 2016.  During this period, we will make support payments of up to $4 million a year, not to exceed $11 million for the life of the agreement.  In 2014, we recognized approximately $3 million on the deferred gain. As of December 31, 2014, we have accrued $8 million for the guarantee.

Legal_Proceedings

Legal Proceedings	12 Months Ended
	Dec. 31, 2014
Commitments And Contingencies Disclosure [Abstract]
Legal Proceedings	16	Legal Proceedings
	We are involved in various legal proceedings in the normal 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 $35 million as of December 31, 2014. We have estimated that, in the aggregate, our losses related to these proceedings could be as much as $57 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.
	San Antonio Litigation.  In 2005 we initiated a lawsuit against Keystone-Texas Property Holding Corporation (“Keystone”) seeking a declaration that a provision of the ground lease for the property under the San Antonio Marriott Rivercenter was valid and claiming that Keystone had breached that lease provision. Keystone filed an amended counterclaim and later, a third party claim, alleging that we had tortiously interfered with Keystone’s attempted sale of the property and that we slandered Keystone’s title to the property.
	In 2010, we received an adverse jury verdict in the 166th Judicial District Court of Bexar County, Texas. The jury found that we tortiously interfered with the attempted sale by Keystone of the land under the San Antonio Marriott Rivercenter and awarded Keystone $34.3 million in damages, plus statutory interest. In addition, the jury found that we slandered Keystone’s title to the property and awarded Keystone $39 million in damages, plus statutory interest. Keystone was only entitled to receive one of these damage awards. The jury also awarded Keystone $7.5 million in exemplary damages with respect to the second claim. In 2011, a three-judge panel of the San Antonio Court of Appeals issued its memorandum opinion denying our appeal of the trial court’s final judgment.
	In 2012, we filed a Petition for Review in the Texas Supreme Court. On June 13, 2014, the Texas Supreme Court reversed the court of appeals judgment, and Host was no longer liable for the jury verdict and punitive damages award. Keystone requested a rehearing of the Texas Supreme Court’s decision, but that motion was denied on October 3, 2014, finalizing the Texas Supreme Court’s decision. As a result, in the third quarter of 2014, we reversed the $69 million loss contingency previously recorded related to this litigation and the initial adverse verdict. In addition, a court-ordered bond of $25 million was released on October 17, 2014.

Quarterly_Financial_Data_unaud

Quarterly Financial Data (unaudited)	12 Months Ended
	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Data (unaudited)	17	Quarterly Financial Data (unaudited)
			2014
			First		Second		Third		Fourth
			Quarter		Quarter		Quarter		Quarter
			(in millions, except per share/unit amounts)
	Host Hotels & Resorts, Inc.:
	Revenues		$	1,309	$	1,431	$	1,294	$	1,320
	Operating profit			134		225		202		149
	Income from continuing operations			185		159		145		258
	Net income			185		159		145		258
	Net income attributable to Host Hotels & Resorts, Inc.			179		155		144		254
	Basic earnings per common share:
	Continuing operations			0.24		0.21		0.19		0.34
	Discontinued operations			—		—		—		—
	Basic earnings per common share			0.24		0.21		0.19		0.34
	Diluted earnings per common share:
	Continuing operations			0.24		0.21		0.19		0.33
	Discontinued operations			—		—		—		—
	Diluted earnings per common share			0.24		0.21		0.19		0.33
	Host Hotels & Resorts, L.P.(1):
	Net income attributable to Host Hotels & Resorts, L.P.			181		157		146		257
	Basic earnings per common unit:
	Continuing operations			0.24		0.21		0.19		0.34
	Discontinued operations			—		—		—		—
	Basic earnings per common unit			0.24		0.21		0.19		0.34
	Diluted earnings per common unit:
	Continuing operations			0.24		0.21		0.19		0.34
	Discontinued operations			—		—		—		—
	Diluted earnings per common unit			0.24		0.21		0.19		0.34
			2013
			First		Second		Third		Fourth
			Quarter		Quarter		Quarter		Quarter
			(in millions, except per share/unit amounts)
	Host Hotels & Resorts, Inc.:
	Revenues		$	1,224	$	1,399	$	1,211	$	1,331
	Operating profit			90		205		79		138
	Income from continuing operations			34		116		2		59
	Income from discontinued operations			26		5		16		67
	Net income			60		121		18		126
	Net income attributable to Host Hotels & Resorts, Inc.			56		119		19		123
	Basic earnings per common share:
	Continuing operations			0.04		0.15		0.01		0.07
	Discontinued operations			0.04		0.01		0.02		0.09
	Basic earnings per common share			0.08		0.16		0.03		0.16
	Diluted earnings per common share:
	Continuing operations			0.04		0.15		0.01		0.07
	Discontinued operations			0.04		0.01		0.02		0.09
	Diluted earnings per common share			0.08		0.16		0.03		0.16
	Host Hotels & Resorts, L.P.(1):
	Net income attributable to Host Hotels & Resorts, L.P.			57		120		19		125
	Basic earnings per common unit:
	Continuing operations			0.04		0.15		0.01		0.08
	Discontinued operations			0.04		0.01		0.02		0.09
	Basic earnings per common unit			0.08		0.16		0.03		0.17
	Diluted earnings per common unit:
	Continuing operations			0.04		0.15		0.01		0.08
	Discontinued operations			0.04		0.01		0.02		0.09
	Diluted earnings per common unit			0.08		0.16		0.03		0.17
	___________
	-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_De

Real Estate and Accumulated Depreciation	12 Months Ended
	Dec. 31, 2014
Real Estate And Accumulated Depreciation Disclosure [Abstract]
Real Estate and Accumulated Depreciation	SCHEDULE III
	Page 1 of 5
	HOST HOTELS & RESORTS, INC., HOST HOTELS & RESORTS, L.P., AND SUBSIDIARIES
	REAL ESTATE AND ACCUMULATED DEPRECIATION
	December 31, 2014
	(in millions)
			Initial Cost							Subsequent			Foreign			Gross Amount at December 31, 2014								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 Perimeter Center		$	—		$	15	$	7	$	35			—		$	15	$	42	$	57	$	28		—		1976		40
	Atlanta Marriott Suites Midtown			—			—		26		9			—			—		35		35		18		—		1996		40
	Axiom Hotel			—			36		38		—			—			36		38		74		1		—		2014		33
	Boston Marriott Copley Place			—			—		203		67			—			—		270		270		108		—		2002		40
	Calgary Marriott Downtown			—			5		18		18			—			5		36		41		21		—		1996		40
	Chicago Marriott O'Hare			—			4		26		41			—			5		66		71		40		—		1998		40
	Chicago Marriott Suites Downers Grove			—			2		14		7			—			2		21		23		11		—		1989		40
	Chicago Marriott Suites O'Hare			—			5		36		9			—			5		45		50		21		—		1997		40
	Coronado Island Marriott Resort & Spa			—			—		53		27			—			—		80		80		43		—		1997		40
	Costa Mesa Marriott			—			3		18		7			—			3		25		28		14		—		1996		40
	Courtyard Chicago Downtown/River North			—			7		27		14			—			7		41		48		24		—		1992		40
	Delta Meadowvale Hotel & Conference Centre			—			4		20		28			—			4		48		52		29		—		1996		40
	Denver Marriott Tech Center Hotel			—			6		26		29			—			6		55		61		32		—		1994		40
	Denver Marriott West			—			—		12		13			—			—		25		25		18		—		1983		40
	Embassy Suites Chicago-Downtown/Lakefront			—			—		86		8			—			—		94		94		27		—		2004		40
	Four Seasons Hotel Philadelphia			—			26		60		21			—			27		80		107		39		—		1998		40
	Gaithersburg Marriott Washingtonian Center			—			7		22		12			—			7		34		41		18		—		1993		40
	Grand Hyatt Atlanta in Buckhead			—			8		88		27			—			8		115		123		50		—		1998		40
	Grand Hyatt Washington			—			154		247		14			—			154		261		415		24		—		2012		33
	Harbor Beach Marriott Resort & Spa			150			—		62		104			—			—		166		166		93		—		1997		40
	Hilton Melbourne South Wharf			71			—		136		10			(37	)		—		109		109		14		—		2011		31
	Hilton Singer Island Oceanfront Resort			—			2		10		21			—			2		31		33		18		—		1986		40
	Houston Airport Marriott at George Bush Intercontinental			—			—		10		41			—			—		51		51		44		—		1984		40
	Houston Marriott at the Texas Medical Center			—			—		19		20			—			—		39		39		26		—		1998		40
	HOST HOTELS & RESORTS, INC., HOST HOTELS & RESORTS, L.P., AND SUBSIDIARIES
	REAL ESTATE AND ACCUMULATED DEPRECIATION (continued)
	December 31, 2014
	(in millions)
			Initial Cost							Subsequent			Foreign			Gross Amount at December 31, 2014								Date of
								Buildings &		Costs			Currency					Buildings &				Accumulated		Completion of		Date		Depreciation
	Description		Debt			Land		Improvements		Capitalized			Adjustment			Land		Improvements		Total		Depreciation		Construction		Acquired		Life
	Hyatt Place Waikiki Beach			—			12		120		—			—			12		120		132		7		—		2013		34
	Hyatt Regency Cambridge, Overlooking Boston			—			18		84		6			—			19		89		108		47		—		1998		40
	Hyatt Regency Maui Resort & Spa			—			92		212		36			—			81		259		340		84		—		2003		40
	Hyatt Regency Reston			100			11		78		26			—			12		103		115		45		—		1998		40
	Hyatt Regency San Francisco Airport			—			16		119		54			—			20		169		189		75		—		1998		40
	Hyatt Regency Washington on Capitol Hill			—			40		230		40			—			40		270		310		71		—		2006		40
	JW Marriott Atlanta Buckhead			—			16		21		25			—			16		46		62		30		—		1990		40
	JW Marriott Desert Springs Resort & Spa			—			13		143		138			—			13		281		294		134		—		1997		40
	JW Marriott Hotel Rio de Janeiro			—			13		29		3			(16	)		8		21		29		3		—		2010		40
	JW Marriott Houston			—			4		26		29			—			6		53		59		31		—		1994		40
	JW Marriott Mexico City			—			11		35		18			—			10		54		64		41		—		1996		40
	JW Marriott, Washington D.C.			—			26		98		44			—			26		142		168		70		—		2003		40
	Kansas City Airport Marriott			—			—		8		25			—			—		33		33		30		—		1993		40
	Key Bridge Marriott			—			—		38		31			—			—		69		69		64		—		1997		40
	Manchester Grand Hyatt, San Diego			—			—		548		37			—			—		585		585		76		—		2011		35
	Manhattan Beach Marriott			—			—		29		28			—			—		57		57		31		—		1997		40
	Marina del Rey Marriott			—			—		13		28			—			—		41		41		21		—		1995		40
	Marriott Marquis San Diego Marina			—			—		202		282			—			—		484		484		219		—		1996		40
	Miami Marriott Biscayne Bay			—			—		27		32			—			—		59		59		38		—		1998		40
	Minneapolis Marriott City Center			—			—		27		42			—			—		69		69		52		—		1986		40
	New Orleans Marriott			—			16		96		116			—			16		212		228		128		—		1996		40
	New York Marriott Downtown			—			19		79		43			—			19		122		141		65		—		1997		40
	New York Marriott Marquis			—			49		552		189			—			49		741		790		518		—		1986		40
New Zealand Hotel Portfolio			82			34		105		(3	)		4			32		108		140		15		—		2011		35
Newark Liberty International Airport Marriott			—			—		30		34			—			—		64		64		34		—		1984		40
Newport Beach Marriott Bayview			—			6		14		9			—			6		23		29		14		—		1975		40
Newport Beach Marriott Hotel & Spa			—			11		13		115			—			8		131		139		77		—		1975		40
Orlando World Center Marriott			—			18		157		368			—			29		514		543		226		—		1997		40
HOST HOTELS & RESORTS, INC., HOST HOTELS & RESORTS, L.P., AND SUBSIDIARIES
REAL ESTATE AND ACCUMULATED DEPRECIATION (continued)
December 31, 2014
(in millions)
		Initial Cost							Subsequent			Foreign			Gross Amount at December 31, 2014								Date of
							Buildings &		Costs			Currency					Buildings &				Accumulated		Completion of		Date		Depreciation
Description		Debt			Land		Improvements		Capitalized			Adjustment			Land		Improvements		Total		Depreciation		Construction		Acquired		Life
Park Ridge Marriott			—			—		20		15			—			—		35		35		17		—		1987		40
Philadelphia Airport Marriott			—			—		42		17			—			—		59		59		28		—		1995		40
Residence Inn Arlington Pentagon City			—			6		29		11			—			6		40		46		20		—		1996		40
Rio de Janeiro Parque Olympico Hotels			—			21		38		—			(11	)		16		32		48		—		2014		—		35
San Antonio Marriott Rivercenter			—			—		86		83			—			—		169		169		84		—		1996		40
San Antonio Marriott Riverwalk			—			—		45		23			—			—		68		68		35		—		1995		40
San Cristobal Tower, Santiago			—			7		15		2			(4	)		5		15		20		4		—		2006		40
San Diego Marriott Mission Valley			—			4		23		16			—			4		39		43		21		—		1998		40
San Francisco Marriott Fisherman’s Wharf			—			6		20		20			—			6		40		46		25		—		1994		40
San Francisco Marriott Marquis			—			—		278		111			—			—		389		389		234		—		1989		40
San Ramon Marriott			—			—		22		22			—			—		44		44		22		—		1996		40
Santa Clara Marriott			—			—		39		56			—			—		95		95		78		—		1989		40
Scottsdale Marriott at McDowell Mountains			—			8		48		7			—			8		55		63		15		—		2004		40
Scottsdale Marriott Suites Old Town			—			3		20		10			—			3		30		33		16		—		1988		40
Seattle Airport Marriott			—			3		42		20			—			3		62		65		42		—		1998		40
Sheraton Boston Hotel			—			42		262		67			—			42		329		371		84		—		2006		40
Sheraton Indianapolis Hotel at Keystone Crossing			—			3		51		28			—			3		79		82		21		—		2006		40
Sheraton Memphis Downtown Hotel			—			—		16		48			—			—		64		64		28		—		1998		40
Sheraton Needham Hotel			—			5		27		13			—			5		40		45		11		—		1986		40
Sheraton New York Times Square Hotel			—			346		409		194			—			346		603		949		158		—		2006		40
Sheraton Parsippany Hotel			—			8		30		19			—			8		49		57		15		—		2006		40
Sheraton San Diego Hotel & Marina			—			—		328		33			—			—		361		361		87		—		2006		40
Sheraton Santiago Hotel & Convention Center			—			19		11		9			(6	)		16		17		33		8		—		2006		40
Swissôtel Chicago			—			29		132		83			—			30		214		244		80		—		1998		40
Tampa Airport Marriott			—			—		9		24			—			—		33		33		26		—		2000		40
The Fairmont Kea Lani, Maui			—			55		294		53			—			55		347		402		97		—		2003		40
The Ritz-Carlton, Amelia Island			—			25		115		71			—			25		186		211		83		—		1998		40
The Ritz-Carlton, Buckhead			—			14		81		63			—			15		143		158		78		—		1996		40
The Ritz-Carlton, Marina del Rey			—			—		52		28			—			—		80		80		44		—		1997		40
HOST HOTELS & RESORTS, INC., HOST HOTELS & RESORTS, L.P., AND SUBSIDIARIES
REAL ESTATE AND ACCUMULATED DEPRECIATION (continued)
December 31, 2014
(in millions)
		Initial Cost							Subsequent			Foreign			Gross Amount at December 31, 2014								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 Ritz-Carlton, Naples			—			19		126		132			—			21		256		277		134		—		1996		40
The Ritz-Carlton, Naples Golf Resort			—			22		10		67			—			22		77		99		25		2002		—		40
The Ritz-Carlton, Phoenix			—			10		63		8			—			10		71		81		33		—		1998		40
The Ritz-Carlton, Tysons Corner			—			—		89		22			—			—		111		111		51		—		1998		40
The St. Regis Houston			—			6		33		20			—			6		53		59		18		—		2006		40
The Westin Buckhead Atlanta			—			5		84		30			—			6		113		119		48		—		1998		40
The Westin Chicago River North			—			33		116		3			—			33		119		152		13		—		2010		40
The Westin Cincinnati			—			—		54		13			—			—		67		67		20		—		2006		40
The Westin Denver Downtown			—			—		89		13			—			—		102		102		26		—		2006		40
The Westin Georgetown, Washington D.C.			—			16		80		14			—			16		94		110		26		—		2006		40
The Westin Indianapolis			—			12		100		15			—			12		115		127		28		—		2006		40
The Westin Kierland Resort & Spa			—			100		280		22			—			100		302		402		66		—		2006		40
The Westin Los Angeles Airport			—			—		102		17			—			—		119		119		31		—		2006		40
The Westin Mission Hills Resort & Spa			—			40		47		(41	)		—			13		33		46		18		—		2006		40
The Westin New York Grand Central			—			156		152		77			—			156		229		385		48		—		2011		40
The Westin Seattle			—			39		175		23			—			39		198		237		46		—		2006		40
The Westin South Coast Plaza, Costa Mesa			—			—		46		13			—			—		59		59		28		—		2006		40
The Westin Waltham-Boston			—			9		59		16			—			9		75		84		19		—		2006		40
Toronto Marriott Downtown Eaton Centre Hotel			—			—		27		20			—			—		47		47		27		—		1995		40
W New York			—			138		102		69			—			138		171		309		52		—		2006		40
W New York - Union Square			—			48		145		8			—			48		153		201		18		—		2010		40
W Seattle			—			11		125		5			—			11		130		141		29		—		2006		40
Washington Dulles Airport Marriott			—			—		3		39			—			—		42		42		34		—		1970		40
Washington Marriott at Metro Center			—			20		24		26			—			20		50		70		29		—		1994		40
Westfields Marriott Washington Dulles			—			7		32		17			—			7		49		56		28		—		1994		40
YVE Hotel Miami			—			15		41		—			—			15		41		56		1		—		2014		33
Total hotels:			403			2,019		9,185		4,171			(70	)		1,986		13,319		15,305		5,364
Other properties, each less than 5% of total			—			—		4		17			—			4		17		21		12		—		various		40
TOTAL		$	403		$	2,019	$	9,189	$	4,188		$	(70	)	$	1,990	$	13,336	$	15,326	$	5,376
HOST HOTELS & RESORTS, INC., AND SUBSIDIARIES
HOST HOTELS & RESORTS, L.P., AND SUBSIDIARIES
REAL ESTATE AND ACCUMULATED DEPRECIATION
December 31, 2014
(in millions)
Notes:
(A)	The change in total cost of properties for the fiscal years ended December 31, 2014, 2013 and 2012 is as follows:
Balance at December 31, 2011		$	15,020
Additions:
Acquisitions			427
Capital expenditures and transfers from construction-in-progress			443
Deductions:
Dispositions and other			(172	)
Impairments			(57	)
Balance at December 31, 2012			15,661
Additions:
Acquisitions			184
Capital expenditures and transfers from construction-in-progress			353
Deductions:
Dispositions and other			(789	)
Impairments			(1	)
Balance at December 31, 2013			15,408
Additions:
Acquisitions			137
Capital expenditures and transfers from construction-in-progress			288
Deductions:
Dispositions and other			(501	)
Impairments			(6	)
Balance at December 31, 2014		$	15,326
(B)	The change in accumulated depreciation and amortization of real estate assets for the fiscal years ended December 31, 2014, 2013 and 2012 is as follows:
Balance at December 31, 2011		$	4,306
Depreciation and amortization			537
Dispositions and other			(75	)
Balance at December 31, 2012			4,768
Depreciation and amortization			550
Dispositions and other			(270	)
Balance at December 31, 2013			5,048
Depreciation and amortization			547
Dispositions and other			(219	)
Balance at December 31, 2014		$	5,376
(C)	The aggregate cost of real estate for federal income tax purposes is approximately $10,390 million at December 31, 2014.
(D)	The total cost of properties excludes construction-in-progress properties.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2014
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 the entity. 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. For those partnerships and joint ventures where we are the general partner, we review the rights of the limited partners to determine if those rights would overcome the presumption of control as the general partner. Limited partner rights which would overcome presumption of control by the general partner include the substantive ability to dissolve (liquidate) the limited partnership or otherwise remove the general partners without cause and substantive participating rights over activities considered most significant to the business of the partnership or joint venture, primarily voting rights.
	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 would consolidate 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 of these entities.
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 includes 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, and a reserve required for potential legal damages. For purposes of the statements of cash flows, changes in restricted cash caused by changes in required legal reserves are shown as operating activities. Changes in restricted cash caused by using such funds for furniture, fixtures and equipment replacement are shown as investing activities. The remaining changes in restricted cash are the direct result of restrictions under our loan agreements and are reflected in cash flows from financing activities.
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 depreciate our property and equipment using the straight-line method over the estimated useful lives of the assets. Leasehold improvements are amortized over the shorter of the lease term or the useful lives of the related assets.
	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 are then 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 certain 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 the property will be disposed of prior to the end of its useful life, 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 life is equal to the 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 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 impairment of our assets, we make many assumptions and estimates, including:
	—	projected cash flows, both from operations and the eventual disposition;
	—	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, 2014. 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 two properties that required further consideration of property and market specific conditions or factors to determine if the property was impaired using an undiscounted cash flow analysis. Management considered a range of RevPAR and operating margins compared to prior years’ operating results in evaluating the probability-weighted projected cash flows from operations. To appropriately evaluate if the carrying value of the assets was recoverable, we projected cash flows such that the individual properties would return to normalized levels of operations generally within five years and thereafter grow at a stabilized rate of approximately 3% over the remaining estimated lives of the properties. This stabilized growth rate is lower than the projected growth rate for the urban upper upscale properties, which we believe is most representative of our portfolio, over the period from 2013 through 2023. Based on this testing, none of the properties previously identified required further analysis. Management believes its assumptions and estimates reflect current market conditions. During 2014, 2013 and 2012, we recognized impairment expenses of $6 million, $1 million and $60 million, respectively, on one property each year, which impairment expenses are included in depreciation and amortization, based on changes in estimated holding periods.
	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 are frequently 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 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 deferred and recognized as income in subsequent periods as conditions requiring deferral are satisfied or expire without further cost to us.
	Discontinued Operations. In April 2014, the Financial Accounting Standards Board issued Accounting Standards Update (ASU) 2014-08 Presentation of Financial Statements (Topic 205) and Property, Plant and Equipment (Topic 360) - Reporting Discontinued Operations and Disclosure of Disposal of Components of an Entity (“ASU 2014-08 Reporting for Discontinued Operations”). Under this standard, a disposal of a component of an entity or a group of components of an entity is required to be reported in discontinued operations only if the disposal represents a strategic shift that has, or will have, a major effect on an entity’s operations and financial results.  In addition, it requires an entity to present, for each comparative period, the assets and liabilities of a disposal group that includes a discontinued operation separately in the asset and liability sections, respectively, of the statement of financial position. As a result, the operations through the date of disposal and the gain or loss on sale of properties will be included in continuing operations, unless the sale represents a strategic shift. We adopted this standard as of January 1, 2014. No prior year restatements are permitted for this change in policy.
	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.
Intangible Assets and Liabilities	Depreciation and Amortization Expense. 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 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 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 Liabilities
	In conjunction with our acquisitions, we may identify intangible assets and liabilities. Identifiable intangible assets and liabilities typically include 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 corresponding contracts measured over the period equal to the remaining non-cancelable term of the contract. Intangible assets and 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, 2014, we consolidate six 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 $32 million and $34 million as of December 31, 2014 and 2013, respectively. Two of the partnerships have finite lives that terminate between 2081 and 2095, and the associated non-controlling interests are mandatorily redeemable at the end of, but not prior to, the finite life. At December 31, 2014 and 2013, the fair values of the non-controlling interests in the partnerships with finite lives were approximately $85 million and $68 million, respectively.
	Net income (loss) attributable to non-controlling interests of consolidated partnerships is included in our determination of net income (loss). Net income attributable to non-controlling interests of third parties is $6 million, $4 million and $1 million for 2014, 2013 and 2012, respectively.
	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. 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:
			As of December 31,
			2014			2013
	OP units outstanding (millions)			9.3			9.5
	Market price per Host Inc. common share		$	23.77		$	19.44
	Shares issuable upon conversion of one OP unit			1.021494			1.021494
	Redemption value (millions)		$	225		$	190
	Historical cost (millions)			94			95
	Book value (millions) (1)			225			190
	___________
	(1)The book value recorded is equal to the greater of the redemption value or the historical cost.
	Net income (loss) 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 $9 million, $4 million and $1 million for 2014, 2013 and 2012, respectively.
Investments in Affiliates	Investments in Affiliates
	Other-than-Temporary Impairment of an Investment.  We perform an analysis for our equity method investments for impairment based on the occurrence of triggering events that would indicate that the carrying amount of the 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 hotel properties; 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 hotel properties, 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 was recorded in 2014, 2013, or 2012.
	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 current intention to adhere to 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 revenues) 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. In addition to paying federal and state income tax on any retained income, one of our subsidiary REITs is subject to a tax on “built-in gains” on sales of certain assets. 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.
	Deferred Tax Assets and Liabilities. 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, 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.
	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.
Foreign Currency Translation	Foreign Currency Translation
	As of December 31, 2014, our international operations consist of hotels located in Australia, Brazil, Canada, Chile, Mexico, and New Zealand, 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 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.
Derivative Instruments	Derivative Instruments
	We are subject to market exposures in several aspects of our business and may enter into derivative instruments in order to hedge the effect of these market exposures on our operations. Potential market exposures for which we may use derivative instruments to hedge include: (i) changes in the fair value of our international investments due to fluctuations in currency exchange rates, (ii) changes in the fair value of our fixed-rate debt due to changes in the underlying interest rates, and (iii) variability in interest payments due to changes in the underlying interest rate for our floating-rate debt. Derivative instruments are subject to fair value reporting at each reporting date and the increase or decrease in fair value is recorded in net income (loss) or other comprehensive income (loss), based on the applicable hedge accounting guidance. We estimate the fair value of these instruments through the use of third party valuations, which utilize the market standard methodology of netting the discounted future cash receipts and the discounted future expected cash payments. Prior to entering into the derivative instrument, we evaluate whether the transaction will qualify for hedge accounting and continue to evaluate hedge effectiveness throughout the life of the instrument. Derivative instruments that meet the requirements for hedge accounting are recorded on the balance sheet at fair value, with offsetting changes recorded to net income (loss) or other comprehensive income (loss), based on the applicable hedge accounting guidance. We incorporate credit valuation adjustments to reflect, as applicable, our own nonperformance risk or the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of our derivative instruments for the effect of nonperformance risk, we have considered the impact of netting any applicable credit enhancements, such as collateral postings, thresholds, mutual puts and accumulated guarantees. The variable cash flow streams are based on an expectation of future interest and exchange rates derived from observed market interest and exchange rate curves. The values of these instruments will change over time as cash receipts and payments are made and as market conditions change.
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,
			2014			2013
	Gain on foreign currency forward contracts		$	19		$	—
	Loss on interest rate swap cash flow hedges			(2	)		(2	)
	Foreign currency translation			(67	)		(7	)
	Total accumulated other comprehensive loss		$	(50	)	$	(9	)
	There were no material amounts reclassified out of accumulated other comprehensive income (loss) to net income for the year ended December 31, 2014 and 2013. During 2012, we reclassified a net gain of $2 million that had been recognized previously in gain on foreign currency forward sale contracts in other comprehensive income related to two foreign currency denominated subsidiaries that were substantially liquidated during the year and recognized such gain in gain (loss) on foreign currency transactions and derivatives on our consolidated statement of operations.
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) on our statements of operations.
Fair Value Measurement	Fair Value Measurement
	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 (Loss) Per Common Share	Host Inc. Earnings Per Common Share
	Basic earnings per common share is computed by dividing net income attributable to common stockholders by the weighted average number of shares of Host Inc. common stock outstanding. Diluted earnings per common share is computed by dividing net income attributable to common stockholders, as adjusted for potentially dilutive securities, by the weighted average number of shares of Host Inc. common stock outstanding plus other potentially dilutive securities. Dilutive securities may include shares granted under comprehensive stock plans, other non-controlling interests that have the option to convert their limited partnership interests to common OP units and convertible debt securities. No effect is shown for any securities that are anti-dilutive.
Earnings (Loss) Per Common Unit	Host L.P. Earnings Per Common Unit
	Basic earnings per common unit is computed by dividing net income attributable to common unitholders by the weighted average number of common units outstanding. Diluted earnings per common unit is computed by dividing net income attributable to common unitholders, as adjusted for potentially dilutive securities, by the weighted average number of common units outstanding plus other potentially dilutive securities. Dilutive securities may include units distributed to Host Inc. to support Host Inc. common shares granted under comprehensive stock plans, other non-controlling interests that have the option to convert their limited partnership interests to common OP units and convertible debt securities. No effect is shown for any securities that are anti-dilutive.
Share-Based Payments	Share-Based Payments
	At December 31, 2014, 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 awards or liability awards based upon cash settlement options. 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. Awards are classified as liability awards to the extent that settlement features allow the recipient to determine percentage of the restricted stock awards withheld to meet the recipients’ tax withholding requirements. As these awards vest over a one-year period ending December 31, the value is calculated as the estimated number of shares earned during the year times the stock price at year end, less estimated forfeitures. 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. At December 31, 2014 and December 31, 2013, our exposure to risk related to our derivative instruments totaled $13 million and $4 million, respectively, and the counterparties to such instruments are investment grade financial institutions. Our credit risk exposure with regard to our cash and the $796 million available under 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. 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, 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 Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2014-09, Revenue from Contracts with Customers (Topic 606), which affects virtually all aspects of an entity’s revenue recognition.  The core principle of the new standard is that revenue should be recognized to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services.  The standard is effective for annual reporting periods beginning after December 15, 2016.  We have not yet completed our assessment of the effect of the new standard on our financial statements, including possible transition alternatives.

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2014
Consolidated Portfolio of Hotels by Location	As of December 31, 2014, the hotels in our consolidated portfolio are located in the following countries:
		Hotels
	United States		97
	Australia		1
	Brazil		3
	Canada		3
	Chile		2
	Mexico		1
	New Zealand		7
	Total		114
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:
			As of December 31,
			2014			2013
	OP units outstanding (millions)			9.3			9.5
	Market price per Host Inc. common share		$	23.77		$	19.44
	Shares issuable upon conversion of one OP unit			1.021494			1.021494
	Redemption value (millions)		$	225		$	190
	Historical cost (millions)			94			95
	Book value (millions) (1)			225			190
	___________
	(1)The book value recorded is equal to the greater of the redemption value or the historical cost.
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,
			2014			2013
	Gain on foreign currency forward contracts		$	19		$	—
	Loss on interest rate swap cash flow hedges			(2	)		(2	)
	Foreign currency translation			(67	)		(7	)
	Total accumulated other comprehensive loss		$	(50	)	$	(9	)
Earnings Per Common Share (Unit)	The calculation of basic and diluted earnings per common share is shown below (in millions, except per share amounts):
			Year ended December 31,
			2014			2013			2012
	Net income		$	747		$	325		$	63
	Less: Net income attributable to non-controlling interests			(15	)		(8	)		(2	)
	Net income attributable to Host Inc.			732			317			61
	Assuming conversion of exchangeable senior debentures			27			—			—
	Diluted income attributable to Host Inc.		$	759		$	317		$	61
	Basic weighted average shares outstanding			755.4			744.4			718.2
	Assuming weighted average shares for conversion of			30.3			2.4			—
	exchangeable senior debentures
	Assuming distribution of common shares granted under the			1.1			1.1			1.4
	comprehensive stock plans, less shares assumed
	purchased at market
	Diluted weighted average shares outstanding (1)			786.8			747.9			719.6
	Basic earnings per common share		$	0.97		$	0.43		$	0.08
	Diluted earnings per common share		$	0.96		$	0.42		$	0.08
	___________
	-1	There were approximately 30 million and 40 million potentially dilutive shares as of December 31, 2013 and 2012, respectively, related to our exchangeable senior debentures, which shares were not included in the computation of diluted earnings per share because to do so would have been anti-dilutive for the period.
HOST HOTELS & RESORTS L.P.
Earnings Per Common Share (Unit)	The calculation of basic and diluted earnings per common unit is shown below (in millions, except per unit amounts):
			Year ended December 31,
			2014			2013			2012
	Net income		$	747		$	325		$	63
	Less: Net income attributable to non-controlling interests			(6	)		(4	)		(1	)
	Net income attributable to Host L.P.			741			321			62
	Assuming conversion of exchangeable senior debentures			27			1			—
	Diluted income attributable to Host L.P.		$	768		$	322		$	62
	Basic weighted average units outstanding			748.9			738.4			713.3
	Assuming weighted average units for conversion of			29.7			2.4			—
	exchangeable senior debentures
	Assuming distribution of common units granted under the			1			1.1			1.3
	comprehensive stock plans, less units assumed
	purchased at market
	Diluted weighted average units outstanding (1)			779.6			741.9			714.6
	Basic earnings per common unit		$	0.99		$	0.43		$	0.09
	Diluted earnings per common unit		$	0.99		$	0.43		$	0.09
	___________
	-1	There were approximately 29 million and 40 million potentially dilutive units as of December 31, 2013 and 2012, respectively, related to our exchangeable senior debentures, which units were not included in the computation of diluted earnings per unit because to do so would have been anti-dilutive for the period.
European Joint Venture
Consolidated Portfolio of Hotels by Location	As of December 31, 2014, the Euro JV hotels are located in the following countries:
		Hotels
	Belgium		3
	France		4
	Germany		2
	Italy		3
	Poland		1
	Spain		2
	Sweden		1
	The Netherlands		2
	United Kingdom		1
	Total		19

Property_and_Equipment_Tables

Property and Equipment (Tables)	12 Months Ended
	Dec. 31, 2014
Property Plant And Equipment [Abstract]
Property and Equipment	Property and equipment consists of the following (in millions):
		As of December 31,
		2014			2013
	Land and land improvements	$	1,990		$	1,973
	Buildings and leasehold improvements		13,336			13,435
	Furniture and equipment		2,217			2,223
	Construction in progress		209			176
			17,752			17,807
	Less accumulated depreciation and amortization		(7,177	)		(6,812	)
		$	10,575		$	10,995

Investments_in_Affiliates_Tabl

Investments in Affiliates (Tables)	12 Months Ended
	Dec. 31, 2014
Investments In And Advances To Affiliates Schedule Of Investments [Abstract]
Summary of Investments in Affiliates	We own investments in joint ventures that are accounted for under the equity method of accounting. The debt of the Euro JV and Asia/Pacific JV is non-recourse to, and not guaranteed by, us. The debt of the Hyatt Place JV and the construction loan for the Maui JV is jointly and/or severally guaranteed by the partners of the joint ventures. Investments in affiliates consist of the following (in millions):
		As of December 31, 2014
		Ownership			Our			Our Portion
		Interests			Investment			of Debt			Total Debt		Assets
	Euro JV	32.1 - 33.4		%	$	348		$	388		$	1,186	Nineteen hotels in Europe
	Asia/Pacific JV		25	%		22			9			37	One hotel in Australia and a 36% interest in three operating hotels and four hotels under development in India
	Maui JV		67	%		61			64			96	131-unit vacation ownership project in Maui, Hawaii
	Hyatt Place JV		50	%		7			16			31	One hotel in Nashville, Tennessee
	Philadelphia		11	%		(5	)		25			227	One hotel in Philadelphia, PA
	Marriott
	Downtown
	Total				$	433		$	502		$	1,577
		As of December 31, 2013
		Ownership			Our			Our Portion
		Interests			Investment			of Debt			Total Debt		Assets
	Euro JV	32.1 - 33.4		%	$	374		$	444		$	1,363	Nineteen hotels in Europe
	Asia/Pacific JV		25	%		20			10			39	One hotel in Australia and a 36% interest in two operating hotels and five hotels under development in India
	Maui JV		67	%		16			34			50	131-unit vacation ownership project in Maui, Hawaii
	Hyatt Place JV		50	%		5			12			24	One hotel in Nashville, Tennessee
	Total				$	415		$	500		$	1,476
Combined Summarized Balance Sheet Information	Combined Financial Information of Unconsolidated Investees
	Combined summarized balance sheet information for our affiliates is as follows (in millions):
		As of December 31,
		2014			2013
	Property and equipment, net	$	2,369		$	2,362
	Timeshare inventory		178			106
	Other assets		424			376
	Total assets	$	2,971		$	2,844
	Debt	$	1,577		$	1,476
	Other liabilities		163			135
	Equity		1,231			1,233
	Total liabilities and equity	$	2,971		$	2,844
Combined Summarized Operating Results For Affiliates	Combined summarized operating results for our affiliates is as follows (in millions):
		Year ended December 31,
		2014			2013			2012
	Total revenues	$	776		$	617		$	428
	Operating expenses
	Expenses		(568	)		(489	)		(346	)
	Depreciation and amortization		(91	)		(131	)		(56	)
	Operating profit (loss)		117			(3	)		26
	Interest expense		(79	)		(59	)		(43	)
	Gain on disposition		12			2			—
	Net income (loss)	$	50		$	(60	)	$	(17	)

Debt_Tables

Debt (Tables)	12 Months Ended
	Dec. 31, 2014
Debt Instrument [Line Items]
Debt	Debt consists of the following (in millions):
			As of December 31,
			2014				2013
	Series Q senior notes, with a rate of 6¾% due June 2016		$	—			$	150
	Series V senior notes, with a rate of 6% due November 2020			500				500
	Series X senior notes, with a rate of 5⅞% due June 2019			498				497
	Series Z senior notes, with a rate of 6% due October 2021			300				300
	Series B senior notes, with a rate of 5¼% due March 2022			350				350
	Series C senior notes, with a rate of 4¾% due March 2023			450				450
	Series D senior notes, with a rate of 3¾% due October 2023			400				400
	2009 Exchangeable Senior Debentures, with a rate of 2½% due October 2029			386				371
	Total senior notes			2,884				3,018
	Credit facility revolver			204				446
	Credit facility term loan due June 2017			500				500
	Mortgage debt (non-recourse), with an average interest rate of 5.0% and 4.1% at			404				709
	December 31, 2014 and 2013, respectively, maturing through January 2024
	Other			—				86
	Total debt		$	3,992			$	4,759
Interest Expense	The following items are included in interest expense (in millions):
			Year ended December 31,
			2014(1)				2013(1)			2012(1)
	Interest expense		$	214			$	304		$	373
	Amortization of debt premiums/discounts, net (2)			(16	)			(15	)		(18	)
	Amortization of deferred financing costs			(8	)			(10	)		(12	)
	Non-cash losses on debt extinguishments			(2	)			(13	)		(9	)
	Change in accrued interest			1				16			4
	Interest paid (3)		$	189			$	282		$	338
	___________
	-1	Interest expense and interest paid for 2014, 2013 and 2012 include cash prepayment premiums of approximately $2 million, $23 million and $21 million, respectively.
	-2	Primarily represents the amortization of the debt discount on our Debentures, which is considered non-cash interest expense.
	-3	Does not include capitalized interest of $7 million, $6 million and $6 million during 2014, 2013 and 2012, respectively.
Mortgage Debt Issuances And Repayments	We had the following mortgage debt issuances and repayments since January 2013:
									Maturity
	Transaction Date		Property		Rate				Date	Amount
	Issuances/Assumptions									(in millions)
	Dec-13		Harbor Beach Marriott Resort & Spa			4.75	%		1/1/24	$	150
	Repayments
	Feb-14		The Ritz-Carlton, Naples and Newport Beach Marriott Hotel			3.25	%		3/1/14		(300	)
	Dec-13		Harbor Beach Marriott Resort & Spa			5.55	%		3/1/14		(134	)
	Dec-13		The Westin Denver Downtown			8.51	%		12/11/23		(31	)
	May-13		Orlando World Center Marriott			4.75	%		7/1/13		(246	)
Aggregate Debt Maturities	Aggregate debt maturities are as follows (in millions):
			As of December 31, 2014
	2015		$	400
	2016			253
	2017			500
	2018			204
	2019			500
	Thereafter			2,150
				4,007
	Unamortized (discounts) premiums, net			(16	)
	Capital lease obligations			1
			$	3,992
Convertible Debt
Debt Instrument [Line Items]
Interest Expense	Interest expense recorded for our exchangeable senior debentures (including interest expense for debentures redeemed in 2013 and 2012) consists of the following (in millions):
			Year ended December 31,
			2014				2013			2012
	Contractual interest expense (cash)		$	10			$	10		$	19
	Non-cash interest expense due to discount amortization			16				15			17
	Total interest expense		$	26			$	25		$	36

Equity_of_Host_Inc_and_Capital1

Equity of Host Inc. and Capital of Host L.P. (Tables)	12 Months Ended
	Dec. 31, 2014
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,
		2014		2013		2012
	Common stock	$	0.75	$	0.46	$	0.3
	Common OP units		0.766		0.47		0.306

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2014
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 and asset tax credit carryovers as of December 31, 2014 with respect to our hotel in Mexico. There is a $4 million valuation allowance against the deferred tax asset related to the net operating loss and capital loss carryovers as of December 31, 2014 with respect to our hotels in Canada. There is a $4 million valuation allowance related to the net operating loss incurred by our office in Rio de Janeiro as of December 31, 2014. Finally, there is a $10 million valuation allowance against the deferred tax asset related to the net operating loss carryovers as of December 31, 2014 with respect to certain of our U.S. taxable REIT subsidiaries that acted as lessee pursuant to the terminated HPT leases. We expect that the remaining net operating loss and alternative minimum tax credit carryovers for U.S. federal income tax purposes will be realized. The net decrease in the valuation allowance for the year ending December 31, 2014 and December 31, 2013 is approximately $16 million and $2 million, respectively. The primary components of our net deferred tax assets are as follows (in millions):
			As of December 31,
			2014				2013
	Deferred tax assets
	Accrued related party interest		$	21			$	19
	Net operating loss and capital loss carryovers			70				85
	Alternative minimum tax credits			5				5
	Property and equipment			4				4
	Investments in domestic affiliates			3				3
	Deferred revenue and expenses			55				57
	Other			1				1
	Total gross deferred tax assets			159				174
	Less: Valuation allowance			(45	)			(61	)
	Total deferred tax assets, net of valuation allowance		$	114			$	113
	Deferred tax liabilities
	Property and equipment			(17	)			(21	)
	Investments in domestic and foreign affiliates			(8	)			(6	)
	Other			(2	)			(3	)
	Total gross deferred tax liabilities			(27	)			(30	)
	Net deferred tax assets		$	87			$	83
Income (Loss) From Continuing Operations Before Income Taxes	Our U.S. and foreign income (loss) from continuing operations before income taxes was as follows (in millions):
		Year ended December 31,
		2014				2013				2012
	U.S. income (loss)	$	744			$	213			$	(22	)
	Foreign income		17				18				45
	Total	$	761			$	231			$	23
Provision for Income Taxes from Continuing Operations	The provision for income taxes from continuing operations consists of (in millions):
				Year ended December 31,
				2014				2013				2012
	Current	—Federal		$	3			$	2			$	3
		—State			2				4				1
		—Foreign			10				9				10
					15				15				14
	Deferred	—Federal			(1	)			4				11
		—State			(1	)			1				1
		—Foreign			1				1				5
					(1	)			6				17
	Income tax provision – continuing operations			$	14			$	21			$	31
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% and the actual income tax provision recorded for continuing operations are as follows (in millions):
			Year ended December 31,
			2014				2013				2012
	Statutory federal income tax provision – continuing operations		$	265			$	81			$	8
	Adjustment for nontaxable (income) loss of Host Inc. –			(268	)			(77	)			4
	continuing operations
	State income tax provision, net			1				5				2
	Provision for uncertain tax positions			5				2				2
	Foreign income tax provision			11				10				15
	Income tax provision – continuing operations		$	14			$	21			$	31
Unrecognized Tax Benefits Reconciliation	A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in millions):
			2014				2013
	Balance at January 1		$	5			$	3
	State increases			2				—
	Other increases			3				2
	Balance at December 31		$	10			$	5

Leases_Tables

Leases (Tables)	12 Months Ended
	Dec. 31, 2014
Leases [Abstract]
Future Minimum Annual Rental Commitments Required Under Non-Cancelable Leases	The following table presents the future minimum annual rental commitments required under non-cancelable leases for which we are the lessee (in millions):
		As of December 31, 2014
		Capital			Operating
		Leases			Leases
	2015	$	1		$	46
	2016		—			44
	2017		—			44
	2018		—			42
	2019		—			40
	Thereafter		—			1,572
	Total minimum lease payments	$	1		$	1,788
Rent Expense	Rent expense is included in other property-level expenses on our consolidated statements of operations and consists of (in millions):
		Year ended December 31,
		2014			2013			2012
	Minimum rentals on operating leases	$	48		$	50		$	117
	Additional rentals based on sales		32			32			31
	Rental payments based on real estate tax assessments		—			24			23
	Less: sublease rentals		(3	)		(3	)		(3	)
		$	77		$	103		$	168

Employee_Stock_Plans_Tables

Employee Stock Plans (Tables)	12 Months Ended
	Dec. 31, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Summary of Status of Senior Executive Plans
			Year ended December 31,
			2014					2013					2012
			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			1.5			18		1.7			16		1.6			14
	Vested (1)			(0.8	)		24		(0.8	)		19		(0.6	)		16
	Forfeited/expired			(0.7	)		24		(0.9	)		19		(1.0	)		16
	Balance, at end of year			—			—		—			—		—		—
	Issued in calendar year (1)			0.4			19		0.3			19		0.8			16
	___________
	-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 0.4 million shares issued in 2014 include shares vested at December 31, 2013, after adjusting for shares withheld to meet employee tax requirements. The shares withheld for employee tax requirements were valued at $6.1 million, $5.5 million and $9.5 million, for 2014, 2013 and 2012, respectively.

Dispositions_Tables

Dispositions (Tables)	12 Months Ended
	Dec. 31, 2014
Discontinued Operations And Disposal Groups [Abstract]
Summary of Results of Operations for Hotels Sold Included in Continuing Operations	The following table provides summary results of operations for the five hotels sold in 2014, which are included in continuing operations (in millions):
		Year ended December 31,
			2014		2013
	Revenues		$	72	$	182
	Income before taxes			8		19
	Gain on disposals			229		—
Summary of Results of Operations for Hotels Sold which are Included in Discontinued Operations	The following table provides summary results of operations for the five hotels sold in 2013 and the three hotels sold in 2012, which are included in discontinued operations (in millions):
			Year ended December 31,
			2013		2012
	Revenues		$	104	$	264
	Income before taxes			22		24
	Gain on disposals, net of tax			97		48
Net Income (Loss) Attributable to Host Inc.	Net income (loss) attributable to Host Inc. is allocated between continuing and discontinued operations as follows (in millions):
			Year ended December 31,
			2013		2012
	Continuing operations, net of tax		$	203	$	(10	)
	Discontinued operations, net of tax			114		71
	Net income attributable to Host Inc.		$	317	$	61
Net Income (Loss) Attributable to Host L.P.	Net income (loss) attributable to Host L.P. is allocated between continuing and discontinued operations as follows (in millions):
			Year ended December 31,
			2013		2012
	Continuing operations, net of tax		$	206	$	(9	)
	Discontinued operations, net of tax			115		71
	Net income attributable to Host L.P.		$	321	$	62

Acquisitions_Tables

Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2014
Business Combinations [Abstract]
Estimated Fair Value of Assets Acquired and Liabilities Assumed in Acquisitions	The following table summarizes the estimated fair value of the assets acquired and liabilities assumed for our 2014 and 2013 hotel acquisitions (in millions):
		As of December 31,
		2014			2013
	Property and equipment	$	131		$	138
	FF&E Reserves and other assets		3			1
	Total assets		134			139
	Other liabilities		(1	)		—
	Net assets acquired	$	133		$	139
Summary of Unaudited Consolidated Pro Forma Results of Operations	Our summarized unaudited consolidated pro forma results of operations, assuming the 2014 and 2013 hotel acquisitions occurred on January 1, 2013 and 2012, respectively, and excluding the acquisition costs discussed above, are as follows (in millions, except per share and per unit amounts):
		Year ended December 31,
		2014			2013
	Revenues	$	5,362		$	5,189
	Income from continuing operations		751			214
	Net income		751			329
	Host Inc.:
	Net income attributable to Host Inc.	$	736		$	321
	Basic earnings per common share:
	Continuing operations	$	0.97		$	0.27
	Discontinued operations		—			0.16
	Basic earnings per common share	$	0.97		$	0.43
	Diluted earnings per common share:
	Continuing operations	$	0.97		$	0.28
	Discontinued operations		—			0.15
	Diluted earnings per common share	$	0.97		$	0.43
	Host L.P.:
	Net income attributable to Host L.P.	$	745		$	325
	Basic earnings per common share:
	Continuing operations	$	0.99		$	0.29
	Discontinued operations		—			0.15
	Basic earnings per common share	$	0.99		$	0.44
	Diluted earnings per common share:
	Continuing operations	$	0.99		$	0.29
	Discontinued operations		—			0.15
	Diluted earnings per common share	$	0.99		$	0.44

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Fair Value of Financial Assets and Liabilities	The following table details the fair value of our financial assets and liabilities that are required to be measured at fair value on a recurring basis, as well as non-recurring fair value measurements that we completed during 2014 and 2013 due to the impairment of non-financial assets (in millions):
							Fair Value at Measurement Date Using
			Balance at December 31,				Quoted Prices in Active Markets for Identical Assets (Level 1)				Significant Other Observable Inputs				Significant Unobservable Inputs
			2014								(Level 2)				(Level 3)
	Fair Value Measurements on a Recurring Basis:
	Assets
	Foreign currency forward sale contracts (1)		$	13			$	—			$	13			$	—
	Liabilities
	Interest rate swap derivatives (1)			(2	)			—				(2	)			—
	Fair Value Measurements on a Non-recurring Basis:
	Impaired hotel properties sold (2)			—				—				—				18
							Fair Value at Measurement Date Using
			Balance at December 31,				Quoted Prices in Active Markets for Identical Assets (Level 1)				Significant Other Observable Inputs				Significant Unobservable Inputs
			2013								(Level 2)				(Level 3)
	Fair Value Measurements on a Recurring Basis:
	Assets
	Interest rate swap derivatives (1)		$	1			$	—			$	1			$	—
	Foreign currency forward sale contracts (1)			3				—				3				—
	Liabilities
	Interest rate swap derivatives (1)			(3	)			—				(3	)			—
	Foreign currency forward sale contracts (1)			(6	)			—				(6	)			—
	Fair Value Measurements on a Non-recurring Basis:
	Impaired hotel properties held and used (2)			9				—				—				9
	___________
	—	These derivative contracts have been designated as hedging instruments.
	—	The fair value measurements are as of the measurement date of the impairment and may not reflect the book value as of December 31, 2014 and 2013, respectively.
Interest Rate Swap Derivatives Designated as Cash Flow Hedges	The following table summarizes our interest rate swap derivatives designated as cash flow hedges (in millions):
												Change in Fair Value
												Gain (Loss)
			Total Notional			Maturity		Swapped		All-in-		Year ended December 31,
	Transaction Date		Amount			Date		Index		Rate		2014			2013
	November 2011 (1)		A$	62		Nov-16		Reuters BBSY		6.70%		$	—		$	1
	February 2011 (2)		NZ$	79		Feb-16		NZ$ Bank Bill		7.15%		$	—		$	2
	___________
	-1	The swap was entered into in connection with the A$86 million ($71 million) mortgage loan on the Hilton Melbourne South Wharf.
	-2	The swap was entered into in connection with the NZ$105 million ($82 million) mortgage loan on seven properties in New Zealand.
Foreign Currency Sale Contracts	The following table summarizes our foreign currency forward sale contracts (in millions):
	Currently Outstanding													Change in Fair Value - All Contracts
			Total
			Transaction					Total						Gain (Loss)
			Amount in					Transaction
	Transaction Date		Foreign					Amount				Forward Purchase		Year ended December 31,
	Range		Currency					in Dollars				Date Range		2014			2013
	July 2011-May 2014		€		100			$	135			August 2015-May 2017		$	18		$	(5	)
	Nov-14		C$		25			$	22			Nov-16		$	1		$	—
Draws on Credit Facility that are Designated as Net Investments in Foreign Operations	The following table summarizes the draws on our credit facility that are designated as hedges of net investments in international operations (in millions):
			Balance			Balance			Gain (Loss)
			Outstanding			Outstanding in			Year ended December 31,
	Currency		US$			Foreign Currency			2014			2013
	Canadian dollars (1)		$	27		C$	31		$	2		$	2
	Euros		$	93		€	77		$	13		$	-5
	___________
	-1	We have drawn an additional $65 million on the credit facility in Canadian dollars that has not been designated as a hedging instrument.
Fair Values of Certain Financial Assets and Liabilities and Other Financial Instruments	The fair value of certain financial assets and liabilities and other financial instruments are shown below (in millions):
			As of December 31,
			2014								2013
			Carrying Amount				Fair Value				Carrying Amount				Fair Value
	Financial liabilities
	Senior notes (Level 1)		$	2,498			$	2,668			$	2,647			$	2,766
	Exchangeable Senior Debentures (Level 1)			386				739				371				603
	Credit facility (Level 2)			704				704				946				946
	Mortgage debt and other, excluding capital leases			403				413				793				802
	(Level 2)

Geographic_and_Business_Segmen1

Geographic and Business Segment Information (Tables)	12 Months Ended
	Dec. 31, 2014
Segment Reporting [Abstract]
Revenues and Long-Lived Assets by Geographical Area	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 office buildings) 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 six countries. 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):
		2014				2013				2012
		Revenues		Property and		Revenues		Property and		Revenues		Property and
				Equipment, net				Equipment, net				Equipment, net
	United States	$	5,077	$	10,111	$	4,895	$	10,498	$	4,791	$	11,095
	Australia		39		102		40		106		42		133
	Brazil		36		82		30		76		33		39
	Canada		87		82		97		89		95		97
	Chile		32		44		34		54		37		63
	Mexico		29		26		24		32		25		26
	New Zealand		54		128		46		140		36		135
	Total	$	5,354	$	10,575	$	5,166	$	10,995	$	5,059	$	11,588

Quarterly_Financial_Data_unaud1

Quarterly Financial Data (unaudited) (Tables)	12 Months Ended
	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Data
			2014
			First		Second		Third		Fourth
			Quarter		Quarter		Quarter		Quarter
			(in millions, except per share/unit amounts)
	Host Hotels & Resorts, Inc.:
	Revenues		$	1,309	$	1,431	$	1,294	$	1,320
	Operating profit			134		225		202		149
	Income from continuing operations			185		159		145		258
	Net income			185		159		145		258
	Net income attributable to Host Hotels & Resorts, Inc.			179		155		144		254
	Basic earnings per common share:
	Continuing operations			0.24		0.21		0.19		0.34
	Discontinued operations			—		—		—		—
	Basic earnings per common share			0.24		0.21		0.19		0.34
	Diluted earnings per common share:
	Continuing operations			0.24		0.21		0.19		0.33
	Discontinued operations			—		—		—		—
	Diluted earnings per common share			0.24		0.21		0.19		0.33
	Host Hotels & Resorts, L.P.(1):
	Net income attributable to Host Hotels & Resorts, L.P.			181		157		146		257
	Basic earnings per common unit:
	Continuing operations			0.24		0.21		0.19		0.34
	Discontinued operations			—		—		—		—
	Basic earnings per common unit			0.24		0.21		0.19		0.34
	Diluted earnings per common unit:
	Continuing operations			0.24		0.21		0.19		0.34
	Discontinued operations			—		—		—		—
	Diluted earnings per common unit			0.24		0.21		0.19		0.34
			2013
			First		Second		Third		Fourth
			Quarter		Quarter		Quarter		Quarter
			(in millions, except per share/unit amounts)
	Host Hotels & Resorts, Inc.:
	Revenues		$	1,224	$	1,399	$	1,211	$	1,331
	Operating profit			90		205		79		138
	Income from continuing operations			34		116		2		59
	Income from discontinued operations			26		5		16		67
	Net income			60		121		18		126
	Net income attributable to Host Hotels & Resorts, Inc.			56		119		19		123
	Basic earnings per common share:
	Continuing operations			0.04		0.15		0.01		0.07
	Discontinued operations			0.04		0.01		0.02		0.09
	Basic earnings per common share			0.08		0.16		0.03		0.16
	Diluted earnings per common share:
	Continuing operations			0.04		0.15		0.01		0.07
	Discontinued operations			0.04		0.01		0.02		0.09
	Diluted earnings per common share			0.08		0.16		0.03		0.16
	Host Hotels & Resorts, L.P.(1):
	Net income attributable to Host Hotels & Resorts, L.P.			57		120		19		125
	Basic earnings per common unit:
	Continuing operations			0.04		0.15		0.01		0.08
	Discontinued operations			0.04		0.01		0.02		0.09
	Basic earnings per common unit			0.08		0.16		0.03		0.17
	Diluted earnings per common unit:
	Continuing operations			0.04		0.15		0.01		0.08
	Discontinued operations			0.04		0.01		0.02		0.09
	Diluted earnings per common unit			0.08		0.16		0.03		0.17
	___________
	-1	Other income statement line items not presented for Host L.P. are equal to the amounts presented for Host Inc.

Supplemental_Disclosure_of_Non

Supplemental Disclosure of Noncash Investing and Financing Activities (Host Hotels & Resorts, Inc) - Additional Information (Detail) (USD $)	12 Months Ended			0 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Nov. 09, 2012	Mar. 31, 2013
Other Significant Noncash Transactions [Line Items]
Shares issued for converted units, shares	0.3	0.3	0.6
Redemptions of limited partner interests for common stock	$6	$6	$10
Advances to and investments in affiliates	433	415
Gain on sale of assets	236	33	13
Maui JV
Other Significant Noncash Transactions [Line Items]
Contributed land	36			11
Advances to and investments in affiliates	61	16		8
Investment ownership percentage	67.00%	67.00%		67.00%
Gain on sale of assets			8
Cash received on land contribution				12
Maui JV | Fair Value
Other Significant Noncash Transactions [Line Items]
Contributed land				36
Hyatt Residential Group | Maui JV
Other Significant Noncash Transactions [Line Items]
Equity method investment outside ownership percentage				33.00%
Exchangeable Senior Debentures 3.25%
Other Significant Noncash Transactions [Line Items]
Exchangeable Debentures					$174
Debt interest rate					3.25%
Debt converted into shares of Host Inc. common stock					11.7

Supplemental_Schedule_of_Nonca1

Supplemental Schedule of Noncash Investing and Financing Activities (HOST HOTELS & RESORTS, L.P.) - Additional Information (Detail) (USD $)	12 Months Ended			0 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Nov. 09, 2012	Mar. 31, 2013
Other Significant Noncash Transactions [Line Items]
Redemptions of limited partner interests for common stock	$6	$6	$10
Redemptions of limited partner interests for common stock (shares)	0.3	0.3	0.6
Advances to and investments in affiliates	433	415
Gain on sale of assets	236	33	13
Maui JV
Other Significant Noncash Transactions [Line Items]
Contributed land	36			11
Advances to and investments in affiliates	61	16		8
Investment ownership percentage	67.00%	67.00%		67.00%
Gain on sale of assets			8
Cash received on land contribution				12
Fair Value | Maui JV
Other Significant Noncash Transactions [Line Items]
Contributed land				36
Hyatt Residential Group | Maui JV
Other Significant Noncash Transactions [Line Items]
Equity method investment outside ownership percentage				33.00%
Exchangeable Senior Debentures 3.25%
Other Significant Noncash Transactions [Line Items]
Exchangeable Debentures					174
Debt interest rate					3.25%
Debt converted into shares of Host Inc. common stock					11.7
HOST HOTELS & RESORTS L.P.
Other Significant Noncash Transactions [Line Items]
Redemptions of limited partner interests for common stock	6	6	10
Redemptions of limited partner interests for common stock (shares)	0.3	0.3	0.6
Contributed land				11
Advances to and investments in affiliates	433	415		8
Gain on sale of assets	236	33	13	8
Cash received on land contribution				12
HOST HOTELS & RESORTS L.P. | Fair Value
Other Significant Noncash Transactions [Line Items]
Contributed land				36
HOST HOTELS & RESORTS L.P. | Hyatt Residential Group
Other Significant Noncash Transactions [Line Items]
Equity method investment outside ownership percentage				33.00%
HOST HOTELS & RESORTS L.P. | Exchangeable Senior Debentures 3.25%
Other Significant Noncash Transactions [Line Items]
Exchangeable Debentures					$174
Debt interest rate					3.25%
Debt converted into shares of Host Inc. common stock					11.7
Common OP unit issuances (units)					11.5

Summary_of_Significant_Account3

Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
	Property	Property
	Entity
	Contract
	Hotel
Significant Accounting Policies [Line Items]
Number of hotels	114
Percentage of property revenue allocated for renewal and replacement capital expenditures	5.00%
Property, Plant and Equipment, Salvage Value, Percentage	3.00%
Impairment charges	$6,000,000	$1,000,000
Number of impaired assets	1	1
Number of majority-owned partnerships that have third-party, non-controlling ownership interests that have been consolidated	6
Non-controlling interests—other consolidated partnerships	32,000,000	34,000,000
Number of majority-owned partnerships that have third-party, non-controlling ownership interests with finite lives	2
Non-controlling interests in outside partnerships, fair value	85,000,000	68,000,000
Net income attributable to non-controlling interests outside partnerships	6,000,000	4,000,000	1,000,000
Net income	9,000,000	4,000,000	1,000,000
Other-than-temporary impairment	0	0	0
Percentage greater than threshold of income tax examination minimum likelihood of tax benefits being realized upon settlement	50.00%
Net gain related to two foreign currency denominated subsidiaries that were substantially liquidated			2,000,000
Stock-based employee compensation plans	2
Exposure risk related for derivative contracts	13,000,000	4,000,000
Amount of borrowing capacity currently available under the credit facility	$796,000,000
Lower Limit
Significant Accounting Policies [Line Items]
Majority-owned partnerships with mandatorily redeemable non-controlling interests, termination year	2081
Upper Limit
Significant Accounting Policies [Line Items]
Majority-owned partnerships with mandatorily redeemable non-controlling interests, termination year	2095
Property, Plant and Equipment, Other Types
Significant Accounting Policies [Line Items]
Estimated useful lives	3 years
European Joint Venture
Significant Accounting Policies [Line Items]
Number of hotels	19
Number of funds	2
European Joint Venture | Fund I
Significant Accounting Policies [Line Items]
Investment ownership percentage	32.10%
Number of hotels	10
European Joint Venture | Fund II
Significant Accounting Policies [Line Items]
Investment ownership percentage	33.40%
Number of hotels	9
Asia/Pacific Joint Venture
Significant Accounting Policies [Line Items]
Investment ownership percentage	25.00%
Asia/Pacific Joint Venture | India
Significant Accounting Policies [Line Items]
Number of hotels	7
Number Of Real Estate Properties In Development Stage	4
Asia/Pacific Joint Venture | Bangalore | India
Significant Accounting Policies [Line Items]
Number of hotels	2
Asia/Pacific Joint Venture | Chennai | India
Significant Accounting Policies [Line Items]
Number of hotels	1
Asia/Pacific Joint Venture | Sheraton Perth
Significant Accounting Policies [Line Items]
Number of rooms	278
HOST HOTELS & RESORTS, INC.
Significant Accounting Policies [Line Items]
Percentage of the common OP Units	99.00%
HOST HOTELS & RESORTS L.P.
Significant Accounting Policies [Line Items]
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.

Consolidated_Portfolio_of_Hote

Consolidated Portfolio of Hotels by Location (Detail)	Dec. 31, 2014
	Hotel
Segment Reporting Other Significant Reconciling Item [Line Items]
Hotels	114
European Joint Venture
Segment Reporting Other Significant Reconciling Item [Line Items]
Hotels	19
United States
Segment Reporting Other Significant Reconciling Item [Line Items]
Hotels	97
Australia
Segment Reporting Other Significant Reconciling Item [Line Items]
Hotels	1
Brazil
Segment Reporting Other Significant Reconciling Item [Line Items]
Hotels	3
Canada
Segment Reporting Other Significant Reconciling Item [Line Items]
Hotels	3
Chile
Segment Reporting Other Significant Reconciling Item [Line Items]
Hotels	2
Mexico
Segment Reporting Other Significant Reconciling Item [Line Items]
Hotels	1
New Zealand
Segment Reporting Other Significant Reconciling Item [Line Items]
Hotels	7
Belgium | European Joint Venture
Segment Reporting Other Significant Reconciling Item [Line Items]
Hotels	3
France | European Joint Venture
Segment Reporting Other Significant Reconciling Item [Line Items]
Hotels	4
Germany | European Joint Venture
Segment Reporting Other Significant Reconciling Item [Line Items]
Hotels	2
Italy | European Joint Venture
Segment Reporting Other Significant Reconciling Item [Line Items]
Hotels	3
Poland | European Joint Venture
Segment Reporting Other Significant Reconciling Item [Line Items]
Hotels	1
Spain | European Joint Venture
Segment Reporting Other Significant Reconciling Item [Line Items]
Hotels	2
Sweden | European Joint Venture
Segment Reporting Other Significant Reconciling Item [Line Items]
Hotels	1
The Netherlands | European Joint Venture
Segment Reporting Other Significant Reconciling Item [Line Items]
Hotels	2
United Kingdom | European Joint Venture
Segment Reporting Other Significant Reconciling Item [Line Items]
Hotels	1

Historical_Cost_and_Redemption

Historical Cost and Redemption Values for Non-Controlling Interests (Detail) (USD $)	Dec. 31, 2014		Dec. 31, 2013
In Millions, except Per Share data, unless otherwise specified
Shares Subject To Mandatory Redemption By Settlement Terms [Line Items]
Book value (millions)	$225		$190
HOST HOTELS & RESORTS L.P.
Shares Subject To Mandatory Redemption By Settlement Terms [Line Items]
OP units outstanding (millions)	9.3		9.5
Market price per Host Inc. common share	$23.77		$19.44
Shares issuable upon conversion of one OP unit	1.021494		1.021494
Redemption value (millions)	225		190
Historical cost (millions)	94		95
Book value (millions)	$225	[1]	$190	[1]
[1]	The book value recorded is equal to the greater of the redemption value or the historical cost.

Components_of_Total_Accumulate

Components of Total Accumulated Other Comprehensive Income in Balance Sheets (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Equity [Abstract]
Gain on foreign currency forward contracts	$19
Loss on interest rate swap cash flow hedges	-2	-2
Foreign currency translation	-67	-7
Total accumulated other comprehensive loss	($50)	($9)

Host_Inc_Earnings_Loss_Per_Com

Host Inc. Earnings (Loss) Per Common Share (Detail) (USD $)	12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Earnings Per Share [Abstract]
NET INCOME	$747		$325		$63
Less: Net income attributable to non-controlling interests	-15		-8		-2
NET INCOME ATTRIBUTABLE TO REPORTING ENTITY	732		317		61
Assuming conversion of exchangeable senior debentures	27
Diluted income attributable to Host Inc.	$759		$317		$61
Basic weighted average shares outstanding	755.4		744.4		718.2
Assuming weighted average shares for conversion of exchangeable senior debentures	30.3		2.4
Assuming distribution of common shares granted under the comprehensive stock plans, less shares assumed purchased at market	1.1		1.1		1.4
Diluted weighted average shares outstanding	786.8	[1]	747.9	[1]	719.6	[1]
Basic earnings per common share	$0.97		$0.43		$0.08
Diluted earnings per common share	$0.96		$0.42		$0.08
[1]	There were approximately 30 million and 40 million potentially dilutive shares as of December 31, 2013 and 2012, respectively, related to our exchangeable senior debentures, which shares were not included in the computation of diluted earnings per share because to do so would have been anti-dilutive for the period.

Host_Inc_Earnings_Loss_Per_Com1

Host Inc. Earnings (Loss) Per Common Share (Parenthetical) (Detail) (HOST HOTELS & RESORTS, INC.)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
HOST HOTELS & RESORTS, INC.
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive shares which were not included in the computation of diluted EPS	30	40

Host_LP_Earnings_Loss_Per_Comm

Host LP Earnings (Loss) Per Common Unit (Detail) (USD $)	3 Months Ended																12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2014		Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Earnings Per Share Diluted [Line Items]
NET INCOME																	$747		$325		$63
Less: Net income attributable to non-controlling interests																	-15		-8		-2
NET INCOME ATTRIBUTABLE TO REPORTING ENTITY																	732		317		61
Diluted income attributable to Host Inc.																	759		317		61
Basic weighted average shares outstanding																	755.4		744.4		718.2
Assuming weighted average shares for conversion of exchangeable senior debentures																	30.3		2.4
Assuming distribution of common shares granted under the comprehensive stock plans, less shares assumed purchased at market																	1.1		1.1		1.4
Diluted weighted average shares outstanding																	786.8	[1]	747.9	[1]	719.6	[1]
Basic earnings per common share/unit																	$0.97		$0.43		$0.08
Diluted earnings per common share																	$0.96		$0.42		$0.08
HOST HOTELS & RESORTS L.P.
Earnings Per Share Diluted [Line Items]
NET INCOME																	747		325		63
Less: Net income attributable to non-controlling interests																	-6		-4		-1
NET INCOME ATTRIBUTABLE TO REPORTING ENTITY	257	[2]	146	[2]	157	[2]	181	[2]	125	[2]	19	[2]	120	[2]	57	[2]	741		321		62
Assuming conversion of exchangeable senior debentures																	27		1
Diluted income attributable to Host Inc.																	$768		$322		$62
Basic weighted average shares outstanding																	748.9		738.4		713.3
Assuming weighted average shares for conversion of exchangeable senior debentures																	29.7		2.4
Assuming distribution of common shares granted under the comprehensive stock plans, less shares assumed purchased at market																	1		1.1		1.3
Diluted weighted average shares outstanding																	779.6	[3]	741.9	[3]	714.6	[3]
Basic earnings per common share/unit	$0.34	[2]	$0.19	[2]	$0.21	[2]	$0.24	[2]	$0.17	[2]	$0.03	[2]	$0.16	[2]	$0.08	[2]	$0.99		$0.43		$0.09
Diluted earnings per common share	$0.34	[2]	$0.19	[2]	$0.21	[2]	$0.24	[2]	$0.17	[2]	$0.03	[2]	$0.16	[2]	$0.08	[2]	$0.99		$0.43		$0.09
[1]	There were approximately 30 million and 40 million potentially dilutive shares as of December 31, 2013 and 2012, respectively, related to our exchangeable senior debentures, which shares were not included in the computation of diluted earnings per share because to do so would have been anti-dilutive for the period.
[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 29 million and 40 million potentially dilutive units as of December 31, 2013 and 2012, respectively, related to our exchangeable senior debentures, which units were not included in the computation of diluted earnings per unit because to do so would have been anti-dilutive for the period.

Host_LP_Earnings_Loss_Per_Comm1

Host LP Earnings (Loss) Per Common Unit (Parenthetical) (Detail) (HOST HOTELS & RESORTS L.P.)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
HOST HOTELS & RESORTS L.P.
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive shares which were not included in the computation of diluted EPS	29	40

Summary_of_Property_and_Equipm

Summary of Property and Equipment (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Property Plant And Equipment [Abstract]
Land and land improvements	$1,990	$1,973
Buildings and leasehold improvements	13,336	13,435
Furniture and equipment	2,217	2,223
Construction in progress	209	176
Property, Plant and Equipment, Gross, Total	17,752	17,807
Less accumulated depreciation and amortization	-7,177	-6,812
Property and equipment, net	$10,575	$10,995	$11,588

Property_and_Equipment_Additio

Property and Equipment - Additional information (Detail) (USD $)	Dec. 31, 2014
In Millions, unless otherwise specified
Property Plant And Equipment [Abstract]
Cost of real estate for federal income tax purposes	$10,390

Summary_of_Investments_in_Affi

Summary of Investments in Affiliates (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Nov. 09, 2012
Schedule Of Investments [Line Items]
Advances to and investments in affiliates	$433	$415
Our Portion of Debt	502	500
Total Debt	1,577	1,476
European Joint Venture
Schedule Of Investments [Line Items]
Advances to and investments in affiliates	348	374
Our Portion of Debt	388	444
Total Debt	1,186	1,363
Assets	Nineteen hotels in Europe	Nineteen 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%
Advances to and investments in affiliates	22	20
Our Portion of Debt	9	10
Total Debt	37	39
Assets	One hotel in Australia and a 36% interest in three operating hotels and four hotels under development in India	One hotel in Australia and a 36% interest in two operating hotels and five hotels under development in India
Maui JV
Schedule Of Investments [Line Items]
Investment ownership percentage	67.00%	67.00%	67.00%
Advances to and investments in affiliates	61	16	8
Our Portion of Debt	64	34
Total Debt	96	50
Assets	131-unit vacation ownership project in Maui, Hawaii	131-unit vacation ownership project in Maui, Hawaii
Hyatt Place JV
Schedule Of Investments [Line Items]
Investment ownership percentage	50.00%	50.00%
Advances to and investments in affiliates	7	5
Our Portion of Debt	16	12
Total Debt	31	24
Assets	One hotel in Nashville, Tennessee	One hotel in Nashville, Tennessee
Philadelphia Marriott Downtown
Schedule Of Investments [Line Items]
Investment ownership percentage	11.00%
Advances to and investments in affiliates	-5
Our Portion of Debt	25
Total Debt	$227
Assets	One hotel in Philadelphia, PA

Investments_in_Affiliates_Addi

Investments in Affiliates - Additional Information (Detail)

12 Months Ended

0 Months Ended

1 Months Ended

12 Months Ended

12 Months Ended

0 Months Ended

6 Months Ended

0 Months Ended

12 Months Ended

1 Months Ended

0 Months Ended

12 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2014

Aug. 29, 2013

Aug. 29, 2013

Apr. 30, 2014

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2014

Jul. 03, 2014

Jun. 30, 2013

Jun. 30, 2013

Dec. 31, 2014

Dec. 31, 2014

Jul. 03, 2014

Jul. 03, 2014

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2014

Apr. 30, 2014

Apr. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Oct. 16, 2014

Oct. 16, 2014

Aug. 29, 2013

Aug. 29, 2013

Oct. 22, 2013

Oct. 22, 2013

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2014

Nov. 09, 2012

Dec. 31, 2014

Dec. 31, 2013

USD ($)

USD ($)

USD ($)

EUR (€)

Sheraton Stockholm Hotel

Sheraton Stockholm Hotel

European Joint Venture

European Joint Venture

European Joint Venture

European Joint Venture

European Joint Venture

European Joint Venture

European Joint Venture

European Joint Venture

European Joint Venture

European Joint Venture

European Joint Venture

European Joint Venture

European Joint Venture

European Joint Venture

European Joint Venture

European Joint Venture

European Joint Venture

European Joint Venture

European Joint Venture

European Joint Venture

European Joint Venture

European Joint Venture

European Joint Venture

European Joint Venture

European Joint Venture

European Joint Venture

European Joint Venture

European Joint Venture

Asia/Pacific Joint Venture

Asia/Pacific Joint Venture

Asia/Pacific Joint Venture

Asia/Pacific Joint Venture

Asia/Pacific Joint Venture

Asia/Pacific Joint Venture

Maui JV

Maui JV

Maui JV

Hotel

Sweden

Sweden

EUR (€)

USD ($)

USD ($)

USD ($)

EUR (€)

Impaired Operating Properties

Forward Currency Sale Contracts

Mortgage Loan Portfolio

Mortgage Loan Portfolio

Mortgage Loan Portfolio

Mortgage Loan Portfolio

Mortgage Loan Portfolio

Brussels

Brussels

Mortgage Loans Due Twenty Sixteen

Fund I

Fund II

HOST HOTELS & RESORTS, INC.

HOST HOTELS & RESORTS, INC.

Grand Hotel Esplanade

Grand Hotel Esplanade

Grand Hotel Esplanade

Sheraton Skyline Hotel And Conference Centre

Sheraton Skyline Hotel And Conference Centre

Sheraton Stockholm Hotel

Sheraton Stockholm Hotel

Courtyard Paris La Defense West - Colombes

Courtyard Paris La Defense West - Colombes

India

India

India

HOST HOTELS & RESORTS, INC.

USD ($)

USD ($)

Contract

USD ($)

EUR (€)

USD ($)

Contract

Hotel

USD ($)

EUR (€)

USD ($)

EUR (€)

USD ($)

EUR (€)

EUR (€)

EUR (€)

EUR (€)

USD ($)

EUR (€)

USD ($)

EUR (€)

EURIBOR

USD ($)

GBP (£)

Sweden

Sweden

USD ($)

EUR (€)

USD ($)

Bangalore

Chennai and Delhi

India

Room

Hotel

Room

Room

Room

Room

USD ($)

EUR (€)

Hotel

Hotel

USD ($)

Room

Room

Investments In And Advances To Affiliates [Line Items]

Investment ownership percentage

32.10%

33.40%

25.00%

25.00%

36.00%

67.00%

67.00%

67.00%

Total assets

$2,971

$2,844

$2,300

€ 1,900

Management fees

16

15

13

Number of extension period

two one-year extensions

Joint venture agreement expiration period

2021

Partners contribution

647

364

83

21

Percentage of total equity commitment funded

94.00%

81.00%

Mortgage repayment

384

411

113

94

69

95

34

21.1

14.4

10.4

Extension Period

one year

one year

Amount of distribution

37

17

12

Investment ownership percentage

90.00%

90.00%

Number of rooms

394

394

350

350

465

465

131

Acquisition date total consideration transferred

102

81

135

102

Amount of debt assumed at acquisition

61

48

Debt instrument basis points over euribor

2.19%

Amount of contribution

19

14

14

10

43

Proceeds from sales of assets, net

497

643

160

53

33

26

19

Gain on sale of asset

12

8

2.3

1.7

Issuances of debt

81

61

Effective interest rate

2.00%

4.50%

4.50%

5.67%

5.67%

Mortgage debt

404

709

1,186

980

Number of hotels

114

3

6

6

2

5

Mortgage on debt principal reduction before refinancing

446

337

Mortgage on debt principal reduction after refinancing

4,007

320

242

47.8

Draws on credit facility

4

393

231

48

37

Debt Instrument Maturity Date

3-Jul-19

Foreign currency forward purchase contract

5

4

Hedged amount of our net investment in the European joint venture

228

177

Equity in earnings (losses) of affiliates

26

-17

2

-15

Project development cost

180

Sale of time share

54

Construction loan and partner contributions

110

Contributed land

11

36

Construction loan drawn

86

Debt issued to fund loans to timeshare owners

10

Pre-formation expenditures contributed to joint venture

$8

Combined_Summarized_Balance_Sh

Combined Summarized Balance Sheet Information (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Investments In And Advances To Affiliates Schedule Of Investments [Abstract]
Property and equipment, net	$2,369	$2,362
Timeshare inventory	178	106
Other assets	424	376
Total assets	2,971	2,844
Debt	1,577	1,476
Other liabilities	163	135
Equity	1,231	1,233
Total liabilities and equity	$2,971	$2,844

Combined_Summarized_Operating_

Combined Summarized Operating Results for Affiliates (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Investments In And Advances To Affiliates Schedule Of Investments [Abstract]
Total revenues	$776	$617	$428
Expenses	-568	-489	-346
Depreciation and amortization	-91	-131	-56
Operating profit (loss)	117	-3	26
Interest expense	-79	-59	-43
Gain on disposition	12	2
Net income (loss)	$50	($60)	($17)

Debt_Detail

Debt (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Debt Instrument [Line Items]
Senior Notes	$2,884	$3,018
Exchangeable senior debentures	386	371
Credit facility	704	946
Mortgage debt (non-recourse), with an average interest rate of 5.0% and 4.1% at December 31, 2014 and 2013, respectively, maturing through January 2024	404	709
Other		86
Total debt	3,992	4,759
Series Q senior notes 6.75% due June 2016
Debt Instrument [Line Items]
Senior Notes		150
Series V senior notes 6% due November 2020
Debt Instrument [Line Items]
Senior Notes	500	500
Series X senior notes 5.875% due June 2019
Debt Instrument [Line Items]
Senior Notes	498	497
Series Z senior notes 6% due October 2021
Debt Instrument [Line Items]
Senior Notes	300	300
Series B senior notes 5.25% due March 2022
Debt Instrument [Line Items]
Senior Notes	350	350
Series C senior notes 4.75% due March 2023
Debt Instrument [Line Items]
Senior Notes	450	450
Series D senior notes 3.75% due October 2023
Debt Instrument [Line Items]
Senior Notes	400	400
Exchangeable 2009 Senior Debentures 2.5% Due October 2029
Debt Instrument [Line Items]
Exchangeable senior debentures	386	371
Revolver
Debt Instrument [Line Items]
Credit facility	204	446
Term Loan due June 2017
Debt Instrument [Line Items]
Credit facility	$500	$500

Debt_Parenthetical_Detail

Debt (Parenthetical) (Detail) (Mortgages)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Average interest rate	5.00%	4.10%
Upper Limit
Debt Instrument [Line Items]
Debt Instrument Maturity Date	1-Jan-24

Debt_Additional_Information_De

Debt - Additional Information (Detail) (USD $)

12 Months Ended

0 Months Ended

1 Months Ended

0 Months Ended

1 Months Ended

0 Months Ended

1 Months Ended

In Millions, except Per Share data, unless otherwise specified

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Oct. 30, 2014

Jun. 25, 2014

Jun. 15, 2014

Dec. 31, 2013

Jan. 10, 2014

Feb. 28, 2014

Sep. 30, 2013

Jun. 30, 2013

Mar. 19, 2013

31-May-13

Mar. 31, 2013

Dec. 31, 2011

Dec. 31, 2009

Entity

Debt Instrument [Line Items]

Redemption price of senior notes

$150

$801

$1,795

Mortgage on debt principal reduction after refinancing

4,007

Redemption price percentage

100.00%

Exchangeable senior debentures

386

371

371

Aggregate borrowing capacity

1,000

Additional borrowing capacity

500

Credit facility

704

946

946

Repayments on credit facility

225

207

89

Amount of borrowing capacity currently available under the credit facility

796

Draws on credit facility

4

393

231

Leverage ratio

2.6

Cash and cash equivalents

684

861

417

861

826

Assets that are secured by mortgage debt

10

Interest Expense

Debt Instrument [Line Items]

Loss on extinguishment

4

36

30

7.125% Dulles Airport Industrial Development Revenue Bonds

Debt Instrument [Line Items]

Debt interest rate

7.13%

Repayment of debt

12

7.75% Philadelphia Airport Industrial Development Revenue Bonds

Debt Instrument [Line Items]

Debt interest rate

7.75%

Repayment of debt

40

7% Newark Airport Industrial Development Refunding Revenue Bonds

Debt Instrument [Line Items]

Debt interest rate

7.00%

Repayment of debt

32

Covenant Requiring Guarantees

Debt Instrument [Line Items]

Leverage ratio

6

US Currency

Debt Instrument [Line Items]

Draws on credit facility

118

Revolver

Debt Instrument [Line Items]

Credit facility maturity date

27-Jun-18

Renewal period of credit facility

Two six-month renewal options

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%

Revolver | LIBOR

Debt Instrument [Line Items]

Basis points addition

1.00%

Term Loan

Debt Instrument [Line Items]

Line of credit facility, interest rate

1.29%

Credit facility maturity date

27-Jun-17

Credit facility

500

Renewal period of credit facility

Two one-year renewal options

Line of credit interest terms

Interest on the term loan consists of floating rates plus a margin ranging from 90 to 175 basis points (depending on Host L.P.’s unsecured long-term debt rating). Based on Host L.P.’s unsecured long-term debt rating at December 31, 2014, the margin is 112.5 basis points for an all-in interest rate of 1.29%.

Term Loan | LIBOR

Debt Instrument [Line Items]

Basis points addition

1.13%

Foreign Currency Borrowings

Debt Instrument [Line Items]

Aggregate borrowing capacity

500

Swingline Loans

Debt Instrument [Line Items]

Aggregate borrowing capacity

100

Letter of Credit

Debt Instrument [Line Items]

Aggregate borrowing capacity

100

Credit facility

Debt Instrument [Line Items]

Repayments on credit facility

225

Credit facility | Foreign Currency

Debt Instrument [Line Items]

Repayments on credit facility

7

Draws on credit facility

68

Upper Limit | Revolver | Investment grade | LIBOR

Debt Instrument [Line Items]

Basis points addition

1.55%

Facility commitment fee

0.30%

Upper Limit | Term Loan | Investment grade | LIBOR

Debt Instrument [Line Items]

Basis points addition

1.75%

Lower Limit | Revolver | Investment grade | LIBOR

Debt Instrument [Line Items]

Basis points addition

0.88%

Facility commitment fee

0.13%

Lower Limit | Term Loan | Investment grade | LIBOR

Debt Instrument [Line Items]

Basis points addition

0.90%

Series Q senior notes 6.75% due June 2016

Debt Instrument [Line Items]

Debt interest rate

6.75%

6.75%

6.75%

6.75%

Repayment of debt

400

150

200

200

Redemption price of senior notes

404

152

Series D senior notes 3.75% due October 2023

Debt Instrument [Line Items]

Face amount of debt

400

Debt interest rate

3.75%

Proceed from issuance of note

396

Series T senior notes 9% due May 2017

Debt Instrument [Line Items]

Debt interest rate

9.00%

Repayment of debt

400

Redemption price of senior notes

418

Exchangeable 2004 senior debentures 3.25% due April 2024

Debt Instrument [Line Items]

Debt interest rate

3.25%

Exchangeable Debentures

174

Debt converted into shares of Host Inc. common stock

11.7

Common OP units issued

11.5

Debentures redeemed for cash

1

Exchangeable 2009 Senior Debentures 2.5% Due October 2029

Debt Instrument [Line Items]

Unamortized discount

14

Debt interest rate

2.50%

Mortgage on debt principal reduction after refinancing

400

316

Debt issuance date

22-Dec-09

Percentage of closing exchange price common stock

130.00%

Current equivalent exchange price

$16.71

Debt exchange description

at any time at which the closing price of Host Inc.’s common stock is more than 130% ($16.71) of the exchange price per share for at least 20 of the last 30 consecutive trading days of the calendar quarter or at any time up to two days prior to the date on which the 2009 Debentures have been called for redemption

Excess fair value over principal value

339

Current exchange rate for each $1,000 of principal

77.8265

Current equivalent exchange price

$12.85

Exchangeable share equivalents

31.1

Debt Instrument convertible threshold trading days

20

Debt Instrument convertible threshold consecutive trading days

30 days

Effective interest rate

6.90%

Initial equity value of exchangeable debenture

82

Exchangeable senior debentures

386

371

371

Renewal options

Debt Instrument [Line Items]

Credit facility maturity date

27-Jun-19

Covenant Requirement | Credit facility

Debt Instrument [Line Items]

Debt covenant compliance

As of December 31, 2014, 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 | Upper Limit | Credit facility

Debt Instrument [Line Items]

Leverage ratio

7.25

Covenant Requirement | Lower Limit | Credit facility

Debt Instrument [Line Items]

Unsecured interest coverage ratio

1.75

Fixed charge coverage ratio

1.25

Cash and cash equivalents

100

Debt Covenant | Less Restrictive Covenant

Debt Instrument [Line Items]

Leverage ratio

6

Senior Notes

Debt Instrument [Line Items]

Face amount of debt

2,900

3,100

3,100

Unamortized discount

16

32

32

Debt covenant compliance

As of December 31, 2014, we are in compliance with all of these covenants.

Senior Notes | Upper Limit

Debt Instrument [Line Items]

Debt repurchase authorized amount

$500

Mortgages

Debt Instrument [Line Items]

Debt covenant compliance

As of December 31, 2014, we are in compliance with the covenants under all of our mortgage debt obligations.

Average interest rate

5.00%

4.10%

4.10%

Interest_Expense_for_Debenture

Interest Expense for Debentures (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Debt Instrument [Line Items]
Non-cash interest expense due to discount amortization	$24		$25		$13
Total interest expense	214	[1]	304	[1]	373	[1]
Exchangeable Senior Debentures
Debt Instrument [Line Items]
Contractual interest expense (cash)	10		10		19
Non-cash interest expense due to discount amortization	16		15		17
Total interest expense	$26		$25		$36
[1]	Interest expense and interest paid for 2014, 2013 and 2012 include cash prepayment premiums of approximately $2 million, $23 million and $21 million, respectively.

Mortgage_Debt_Issuances_and_Re

Mortgage Debt Issuances and Repayments (Detail) (USD $)	12 Months Ended			0 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	31-May-13
Debt Instrument [Line Items]
Mortgage repayment	($384)	($411)	($113)
Harbor Beach Marriott Resort & Spa | Issuance of Debt
Debt Instrument [Line Items]
Rate	4.75%
Maturity date	1-Jan-24
Issuances of debt		150
Harbor Beach Marriott Resort & Spa | Repayment of Debt
Debt Instrument [Line Items]
Rate	5.55%
Maturity date	1-Mar-14
Mortgage repayment		-134
The Ritz-Carlton Naples and Newport Beach Marriott Hotel
Debt Instrument [Line Items]
Rate	3.25%
Maturity date	1-Mar-14
Mortgage repayment	-300
The Westin Denver Downtown
Debt Instrument [Line Items]
Rate	8.51%
Maturity date	11-Dec-23
Mortgage repayment		-31
Orlando World Center Marriott
Debt Instrument [Line Items]
Rate	4.75%
Maturity date	1-Jul-13
Mortgage repayment				($246)

Aggregate_Debt_Maturities_Deta

Aggregate Debt Maturities (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Debt Disclosure [Abstract]
2015	$400
2016	253
2017	500
2018	204
2019	500
Thereafter	2,150
Debt principal outstanding	4,007
Unamortized (discounts) premiums, net	-16
Capital lease obligations	1
Total debt	$3,992	$4,759

Interest_Expense_Detail

Interest Expense (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Debt Disclosure [Abstract]
Interest expense	$214	[1]	$304	[1]	$373	[1]
Amortization of debt premiums/discounts, net	-16	[1],[2]	-15	[1],[2]	-18	[1],[2]
Amortization of deferred financing costs	-8	[1]	-10	[1]	-12	[1]
Non-cash losses on debt extinguishments	-2	[1]	-13	[1]	-9	[1]
Change in accrued interest	1	[1]	16	[1]	4	[1]
Interest paid	$189	[1],[3]	$282	[1],[3]	$338	[1],[3]
[1]	Interest expense and interest paid for 2014, 2013 and 2012 include cash prepayment premiums of approximately $2 million, $23 million and $21 million, respectively.
[2]	Primarily represents the amortization of the debt discount on our Debentures, which is considered non-cash interest expense.
[3]	Does not include capitalized interest of $7 million, $6 million and $6 million during 2014, 2013 and 2012, respectively.

Interest_Expense_Parenthetical

Interest Expense (Parenthetical) (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Debt Disclosure [Abstract]
Prepayment premiums	$2	$23	$21
Capitalized interest	$7	$6	$6

Equity_of_Host_Inc_and_Capital2

Equity of Host Inc. and Capital of Host L.P. - Additional Information (Detail) (USD $)	12 Months Ended			1 Months Ended	0 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Mar. 31, 2013	Feb. 17, 2015
Stockholders Equity Note [Line Items]
Common stock, shares authorized	1,050,000,000	1,050,000,000
Common stock, par value	$0.01	$0.01
Common stock, shares outstanding	755,800,000	754,800,000
Issuance of common stock	$4	$303	$274
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	65.00%	96.50%
Dividends taxable as unrecaptured Section 1250 gain	13.00%	3.50%
Capital Gains Distribution Percentage	22.00%
Dividend per share, declared	$0.75	$0.46	$0.30
Lower Limit
Stockholders Equity Note [Line Items]
Percentage of annual taxable income Host Inc is required to distribute	90.00%
Exchangeable 2004 senior debentures 3.25% due April 2024
Stockholders Equity Note [Line Items]
Common OP units issued				11,500,000
Value of debentures converted to equity				174
Debt converted into shares of Host Inc. common stock				11,700,000
Limited Partner
Stockholders Equity Note [Line Items]
Percentage of the common OP Units	1.00%
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	$0.01	$0.01
Common stock, shares outstanding	755,800,000	754,800,000
Preferred stock, shares authorized	50,000,000
Preferred stock, no par value
Preferred stock, shares outstanding	0	0
Percentage of the common OP Units	99.00%
Common OP units, outstanding	739,900,000	738,900,000
Dividend declaration date	17-Feb-15
Dividend payable date	15-Apr-15
Dividend record date	31-Mar-15
HOST HOTELS & RESORTS, INC. | Scenario Forecast
Stockholders Equity Note [Line Items]
Dividend per share, declared					$0.20
HOST HOTELS & RESORTS, INC. | Sales Agency Financing Agreement Twenty Twelve
Stockholders Equity Note [Line Items]
Common stock issuances		16,900,000
Average price per share for stock issued		$17.78
Issuance of common stock		$297
HOST HOTELS & RESORTS L.P.
Stockholders Equity Note [Line Items]
Shares issuable upon conversion of one OP unit	1.021494
Common OP units, outstanding	749,100,000	748,400,000
HOST HOTELS & RESORTS L.P. | Exchangeable 2004 senior debentures 3.25% due April 2024
Stockholders Equity Note [Line Items]
Common OP units issued				11,500,000
HOST HOTELS & RESORTS L.P. | Sales Agency Financing Agreement Twenty Twelve
Stockholders Equity Note [Line Items]
Common OP units issued		16,500,000

Common_Dividends_Declared_Per_

Common Dividends Declared Per Share (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Equity [Abstract]
Common stock	$0.75	$0.46	$0.30
Common OP units	$0.77	$0.47	$0.31

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
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
Valuation allowance	$45	$61
Net (decrease) and increase in valuation allowance	16	2
Domestic and foreign net operating loss, capital loss and tax credit carryovers	204
Deferred tax asset operating loss carryforwards	70
Net operating loss carryover expiration date	Our net operating loss carryovers expire through 2034, and our foreign capital loss carryovers have no expiration period.
Net operating loss carryover expiration year	2034
Expiration of tax credits	Our domestic alternative minimum tax credit carryovers have no expiration period and our foreign asset tax credit carryovers expire through 2017.
Tax credits expiration year	2017
Deferred tax assets, net of valuation allowance	114	113
Cash paid for income taxes, net of refunds received	22	17	12
Statutory federal income tax rate	35.00%
Expected increase in unrecognized tax benefits within 12 months	4
Recognized material interest or penalties	0	0	0
Lower Limit
Income Taxes [Line Items]
Open tax year by major tax jurisdiction	2011
Upper Limit
Income Taxes [Line Items]
Open tax year by major tax jurisdiction	2014
Mexico
Income Taxes [Line Items]
Valuation allowance	27
Canada
Income Taxes [Line Items]
Valuation allowance	4
Brazil
Income Taxes [Line Items]
Valuation allowance	4
United States
Income Taxes [Line Items]
Valuation allowance	$10
Lower Limit
Income Taxes [Line Items]
Percentage of annual taxable income Host Inc is required to distribute	90.00%

Primary_Components_of_Net_Defe

Primary Components of Net Deferred Tax Asset (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Deferred tax assets
Accrued related party interest	$21	$19
Net operating loss and capital loss carryovers	70	85
Alternative minimum tax credits	5	5
Property and equipment	4	4
Investments in domestic affiliates	3	3
Deferred revenue and expenses	55	57
Other	1	1
Total gross deferred tax assets	159	174
Less: Valuation allowance	-45	-61
Total deferred tax assets, net of valuation allowance	114	113
Deferred tax liabilities
Property and equipment	-17	-21
Investments in domestic and foreign affiliates	-8	-6
Other	-2	-3
Total gross deferred tax liabilities	-27	-30
Net deferred tax assets	$87	$83

Income_Loss_from_Continuing_Op

Income (Loss) from Continuing Operations Before Income Taxes (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
U.S. income (loss)	$744	$213	($22)
Foreign income	17	18	45
INCOME BEFORE INCOME TAXES	$761	$231	$23

Provision_for_Income_Taxes_fro

Provision for Income Taxes from Continuing Operations (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Current Federal	$3	$2	$3
Current State	2	4	1
Current Foreign	10	9	10
Current Income Tax Expense (Benefit), Total	15	15	14
Deferred Federal	-1	4	11
Deferred State	-1	1	1
Deferred Foreign	1	1	5
Deferred income taxes	-1	6	17
Income tax provision – continuing operations	$14	$21	$31

Income_Tax_Provision_Calculate

Income Tax Provision Calculated at Statutory U.S. Federal Income Tax Rate and Actual Income Tax Provision Recorded (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Statutory federal income tax provision – continuing operations	$265	$81	$8
Adjustment for nontaxable (income) loss of Host Inc. – continuing operations	-268	-77	4
State income tax provision, net	1	5	2
Provision for uncertain tax positions	5	2	2
Foreign income tax provision	11	10	15
Income tax provision – continuing operations	$14	$21	$31

Unrecognized_Tax_Benefits_Reco

Unrecognized Tax Benefits Reconciliation (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Balance at January 1	$5	$3
State increases	2
Other increases	3	2
Balance at December 31	$10	$5

Leases_Additional_Information_

Leases - Additional Information (Detail) (USD $)	12 Months Ended		0 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2012	Jul. 30, 2012	Dec. 31, 2013	Dec. 31, 1995
	Hotel		sqft		Hotel
Leases Disclosure [Line Items]
Number of hotels subject to ground leases	35
Number of properties	114
Deferred sale proceeds received		$51
Operating leases information	Leases and subleases contain one or more renewal options
Aggregate contingent liabilities relating to our former restaurant business	13
Minimum payments from restaurants and the Sub lessee payable to us under non-cancelable subleases	10
Lower Limit
Leases Disclosure [Line Items]
Number of renewal options	1
Minimum additional renewal option period	5 years
Upper Limit
Leases Disclosure [Line Items]
Minimum additional renewal option period	10 years
New York Marriott Marquis | Vornado Realty Trust
Leases Disclosure [Line Items]
Lease term			20 years
Future minimum rental revenue under the non-cancelable lease on an annual basis			12.5
Area of LED sign			25,000
Courtyard By Marriott Hotel
Leases Disclosure [Line Items]
Deferred sale proceeds received		51
Tenant collections accounts				11
Working capital				$5
Courtyard By Marriott Hotel | Leasehold Interest
Leases Disclosure [Line Items]
Number of properties					53

Future_Minimum_Annual_Rental_C

Future Minimum Annual Rental Commitments Required Under Non-Cancelable Leases (Detail) (USD $)	Dec. 31, 2014
In Millions, unless otherwise specified
Capital Leases
2015	$1
Total minimum lease payments	1
Operating Leases
2015	46
2016	44
2017	44
2018	42
2019	40
Thereafter	1,572
Total minimum lease payments	$1,788

Rent_Expense_Detail

Rent Expense (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Leases [Abstract]
Minimum rentals on operating leases	$48	$50	$117
Additional rentals based on sales	32	32	31
Rental payments based on real estate tax assessments		24	23
Less: sublease rentals	-3	-3	-3
Operating Leases, Rent Expense, Total	$77	$103	$168

Employee_Stock_Plans_Additiona

Employee Stock Plans - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Employee Benefits Disclosure [Line Items]
Common stock reserved and available for issuance under the Comprehensive Plan	17,000,000
Compensation expense	$22		$18		$16
Granted	2,000,000		2,200,000		1,800,000
Vested	1,300,000		1,200,000		900,000
Liability awards as a percentage of restricted stock awards granted	94.00%
Restricted Stock | Executive Officer
Employee Benefits Disclosure [Line Items]
Compensation expense	18		14		12
Granted	1,500,000		1,700,000		1,600,000
Vested	800,000	[1]	800,000	[1]	600,000	[1]
Employee Stock Option
Employee Benefits Disclosure [Line Items]
Compensation expense	1.8		1.8		1.6
Granted	393,000		420,000		201,000
Stock options outstanding	800,000
Stock options exercisable	800,000
Weighted average remaining life - outstanding	8 years
Weighted average remaining life - exercisable	8 years
Weighted average exercise price - outstanding	$17.35
Weighted average exercise price - exercisable	$17.35
Weighted average volatility, minimum	34.00%
Weighted average volatility, maximum	66.00%
Weighted average risk free rate, minimum	1.00%
Weighted average risk free rate, maximum	1.80%
Weighted average dividend yield	3.50%
Expected life	5 years 6 months
Other Stock Plans
Employee Benefits Disclosure [Line Items]
Compensation expense	$2.20		$2		$1.90
Granted	118,000		116,000		84,000
Vesting term	3 years
Employee stock purchase plan discount percentage	10.00%
Senior Executive Plan | Restricted Stock | Executive Officer
Employee Benefits Disclosure [Line Items]
Granted	1,500,000
Restricted stock awards	0
Shares vesting percentage	50.00%
Payout comparison	Vesting of restricted stock awards is based on (1) the achievement of relative total shareholder return (“TSR”) and (2) the company and personal performance of employees attributable to specific management business objectives. Approximately 50% of the restricted stock awards 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, with the remaining 50% based on the achievement of management business objectives.
Senior Executive Plan | Restricted Stock | Executive Officer | Shareholders Return
Employee Benefits Disclosure [Line Items]
Shares vesting percentage	50.00%
Senior Executive Plan | Employee Stock Option | Executive Officer
Employee Benefits Disclosure [Line Items]
Granted	400,000
Stock option exercise price	$19.57
Stock options outstanding	0
[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 0.4 million shares issued in 2014 include shares vested at December 31, 2013, after adjusting for shares withheld to meet employee tax requirements. The shares withheld for employee tax requirements were valued at $6.1 million, $5.5 million and $9.5 million, for 2014, 2013 and 2012, respectively.

Summary_of_Status_of_Senior_Ex

Summary of Status of Senior Executive Plans (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Shares
Granted	2,000,000		2,200,000		1,800,000
Vested	-1,300,000		-1,200,000		-900,000
Restricted Stock | Executive Officer
Shares
Granted	1,500,000		1,700,000		1,600,000
Vested	-800,000	[1]	-800,000	[1]	-600,000	[1]
Forfeited/expired	-700,000		-900,000		-1,000,000
Issued in calendar year	400,000	[1]	300,000	[1]	800,000	[1]
Fair Value
Balance, at beginning of year
Granted	18		16		14
Vested	24	[1]	19	[1]	16	[1]
Forfeited/expired	24		19		16
Balance, at end of year
Issued in calendar year	19	[1]	19	[1]	16	[1]
[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 0.4 million shares issued in 2014 include shares vested at December 31, 2013, after adjusting for shares withheld to meet employee tax requirements. The shares withheld for employee tax requirements were valued at $6.1 million, $5.5 million and $9.5 million, for 2014, 2013 and 2012, respectively.

Summary_of_Status_of_Senior_Ex1

Summary of Status of Senior Executive Plans (Parenthetical) (Detail) (Executive Officer, Restricted Stock, USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Executive Officer | Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares issued	0.4	[1]	0.3	[1]	0.8	[1]
Value of shares withheld for employee tax requirements	$6.10		$5.50		$9.50
[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 0.4 million shares issued in 2014 include shares vested at December 31, 2013, after adjusting for shares withheld to meet employee tax requirements. The shares withheld for employee tax requirements were valued at $6.1 million, $5.5 million and $9.5 million, for 2014, 2013 and 2012, respectively.

Dispositions_Additional_Inform

Dispositions - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
	Hotel	Hotel	Hotel
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Number of properties sold	5	5	3
Proceeds from sales of assets, net	$497	$643	$160
Gain on Sale	229
Tampa Marriott Waterside Hotel And Marina
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Proceeds from sales of assets, net	199
Gain on Sale	115
Greensboro Highpoint Marriott Airport
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Proceeds from sales of assets, net	19
Gain on Sale	3
Philadelphia Marriott Downtown
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Percentage of controlling interest sold	89.00%
Gross sales price	303
Gain on Sale	111
Dayton Marriott
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Proceeds from sales of assets, net	21
Courtyard Nashua
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Proceeds from sales of assets, net	$10

Summary_of_Results_of_Operatio

Summary of Results of Operations for Four Hotels Sold in Twenty Fourteen which are Included in Continuing Operations (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Discontinued Operations And Disposal Groups [Abstract]
Revenues	$72	$182
Income before taxes	8	19
Gain on disposals	$229

Summary_of_Results_of_Operatio1

Summary of Results of Operations for Five Hotels Sold in Twenty Thirteen and Three Hotels Sold in Twenty Twelve which are Included in Discontinued Operations (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Discontinued Operations And Disposal Groups [Abstract]
Revenues	$104	$264
Income before taxes	22	24
Gain on disposals	$97	$48

Net_Income_Loss_Attributable_t

Net Income (Loss) Attributable to Host Inc. (Detail) (USD $)	12 Months Ended			3 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
NET INCOME ATTRIBUTABLE TO REPORTING ENTITY	$732	$317	$61
HOST HOTELS & RESORTS, INC.
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Continuing operations, net of tax		203	-10
Discontinued operations, net of tax		114	71
NET INCOME ATTRIBUTABLE TO REPORTING ENTITY		$317	$61	$254	$144	$155	$179	$123	$19	$119	$56

Net_Income_Loss_Attributable_t1

Net Income (Loss) Attributable to Host Hotels L.P. (Detail) (USD $)

3 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Dec. 31, 2014

Sep. 30, 2014

Jun. 30, 2014

Mar. 31, 2014

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]

NET INCOME ATTRIBUTABLE TO REPORTING ENTITY

$732

$317

$61

HOST HOTELS & RESORTS L.P. AND SUBSIDIARIES

Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]

Continuing operations, net of tax

206

-9

Discontinued operations, net of tax

115

71

NET INCOME ATTRIBUTABLE TO REPORTING ENTITY

$257

[1]

$146

[1]

$157

[1]

$181

[1]

$125

[1]

$19

[1]

$120

[1]

$57

[1]

$741

$321

$62

[1]

Other income statement line items not presented for Host L.P. are equal to the amounts presented for Host Inc.

Acquisitions_Additional_Inform

Acquisitions - Additional Information (Detail)	12 Months Ended		0 Months Ended			12 Months Ended				0 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Aug. 11, 2014	Jan. 21, 2014	31-May-13	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2014	Dec. 10, 2013	Dec. 31, 2013
	USD ($)	USD ($)	b2 Miami downtown hotel	Powell Hotel San Francisco California	Hyatt Place Waikiki Beach	Brazil Agreement To Develop	Brazil Agreement To Develop	Brazil Agreement To Develop	Brazil Agreement To Develop	New York Marriott Marquis Times Square	New York Marriott Marquis Times Square
	Hotel	Hotel	USD ($)	USD ($)	USD ($)	USD ($)	BRL	Novotel	Ibis Rio De Janeiro Parque Olimpico	USD ($)	Ground lease
			Room	Room	Room			Room	Room		USD ($)
Business Acquisition [Line Items]
Number of hotel acquired	2	1
Acquisition-related expenses	$2	$1
Number of rooms			242	151	426			149	256
Acquisition purchase price			58	75	138.5
Pro forma, total revenues	39	15
Pro forma, net income	7	2
Development cost incurred to date						65	139
Asset acquisition										$19.90	$25

Estimated_Fair_Value_of_Assets

Estimated Fair Value of Assets Acquired and Liabilities Assumed in Acquisitions (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Business Combinations [Abstract]
Property and equipment	$131	$138
FF&E Reserves and other assets	3	1
Total assets	134	139
Other liabilities	-1
Net assets acquired	$133	$139

Summary_of_Unaudited_Consolida

Summary of Unaudited Consolidated Pro Forma Results of Operations (Detail) (USD $)	12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Business Acquisition, Pro Forma Information [Abstract]
Revenues	$5,362	$5,189
Income from continuing operations	751	214
Net income	751	329
HOST HOTELS & RESORTS, INC.
Business Acquisition, Pro Forma Information [Abstract]
Net income attributable to Host Inc.	736	321
Basic earnings per common share:
Continuing operations	$0.97	$0.27
Discontinued operations		$0.16
Basic earnings per common share	$0.97	$0.43
Diluted earnings per common share:
Continuing operations	$0.97	$0.28
Discontinued operations		$0.15
Diluted earnings per common share	$0.97	$0.43
HOST HOTELS & RESORTS L.P.
Business Acquisition, Pro Forma Information [Abstract]
Net income attributable to Host Inc.	$745	$325
Basic earnings per common share:
Continuing operations	$0.99	$0.29
Discontinued operations		$0.15
Basic earnings per common share	$0.99	$0.44
Diluted earnings per common share:
Continuing operations	$0.99	$0.29
Discontinued operations		$0.15
Diluted earnings per common share	$0.99	$0.44

Fair_Value_Measurements_Additi

Fair Value Measurements - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
	Hotel	Hotel	Hotel
	Contract
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Number of properties sold	5	5	3
Impairment loss	$6	$1
Number of foreign currency forward contracts outstanding	5
Fair Value, Measurements, Nonrecurring | Impaired Hotels
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Number of properties sold	2

Fair_Value_of_Financial_Assets

Fair Value of Financial Assets and Liabilities (Detail) (USD $)	Dec. 31, 2014		Dec. 31, 2013
In Millions, unless otherwise specified
Foreign currency forward sale contracts
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value measurements on a recurring basis, Assets	$13	[1]	$3	[1]
Fair value measurements on a recurring basis, Liabilities			-6	[1]
Interest rate swap derivatives
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value measurements on a recurring basis, Assets			1	[1]
Fair value measurements on a recurring basis, Liabilities	-2	[1]	-3	[1]
Impaired Hotel Properties Held And Used
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value measurements on a non-recurring basis, Impaired hotel properties held and used			9	[2]
Quoted Prices in Active Markets for Identical Assets (Level 1) | Foreign currency forward sale contracts
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value measurements on a recurring basis, Assets	13	[1]	3	[1]
Fair value measurements on a recurring basis, Liabilities			-6	[1]
Quoted Prices in Active Markets for Identical Assets (Level 1) | Interest rate swap derivatives
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value measurements on a recurring basis, Assets			1	[1]
Fair value measurements on a recurring basis, Liabilities	-2	[1]	-3	[1]
Significant Other Observable Inputs (Level 2) | Impaired Hotel Properties Held And Used
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value measurements on a non-recurring basis, Impaired hotel properties held and used	$18	[2]	$9	[2]
[1]	(1) These derivative contracts have been designated as hedging instruments.
[2]	(1) The fair value measurements are as of the measurement date of the impairment and may not reflect the book value as of December 31, 2014 and 2013, respectively.

Interest_Rate_Swap_Derivatives

Interest Rate Swap Derivatives Designated as Cash Flow Hedges (Detail)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2014		Dec. 31, 2013
	USD ($)	USD ($)	USD ($)	Cash Flow Hedging		Cash Flow Hedging		Cash Flow Hedging		Cash Flow Hedging
				Interest Rate Swap		Interest Rate Swap		Interest Rate Swap		Interest Rate Swap
				Swap Entered In Connection With Mortgage Loan On Hilton Melbourne South Wharf		Swap Entered In Connection With Mortgage Loan On Hilton Melbourne South Wharf		Swap Entered In Connection With Seven Properties		Swap Entered In Connection With Seven Properties
				AUD		USD ($)		New Zealand		New Zealand
								NZD		USD ($)
Derivative [Line Items]
Transaction Date				Nov-11	[1]			Feb-11	[2]
Notional Amount				62	[1]			79	[2]
Maturity Date				2016-11	[1]			2016-02	[2]
Swapped Index				Reuters BBSY	[1]			NZ$ Bank Bill	[2]
All-in-Rate				6.70%	[1]			7.15%	[2]
Change in fair value of derivative instruments	$19	($3)	($7)			$1	[1]			$2	[2]
[1]	The swap was entered into in connection with the A$86 million ($71 million) mortgage loan on the Hilton Melbourne South Wharf.
[2]	The swap was entered into in connection with the NZ$105 million ($82 million) mortgage loan on seven properties in New Zealand.

Interest_Rate_Swap_Derivatives1

Interest Rate Swap Derivatives Designated as Cash Flow Hedges (Parenthetical) (Detail)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2014
In Millions, unless otherwise specified	USD ($)	USD ($)	New Zealand	Interest Rate Swap	Interest Rate Swap	Interest Rate Swap	Interest Rate Swap
	Hotel		Hotel	New Zealand	New Zealand	Swap Entered In Connection With Mortgage Loan On Hilton Melbourne South Wharf	Swap Entered In Connection With Mortgage Loan On Hilton Melbourne South Wharf
				USD ($)	NZD	USD ($)	AUD
				Hotel
Derivative [Line Items]
Mortgage debt	$404	$709		$82	105	$71	86
Hotels	114		7	7	7

Foreign_Currency_Sale_Contract

Foreign Currency Sale Contracts (Detail) (Foreign Exchange Contract, European Joint Venture)	12 Months Ended			12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2014
	Foreign Currency Forward Sale Contract 1	Foreign Currency Forward Sale Contract 1	Foreign Currency Forward Sale Contract 1	Foreign Currency Forward Sale Contract 2	Foreign Currency Forward Sale Contract 2
	USD ($)	USD ($)	EUR (€)	USD ($)	CAD
Derivative [Line Items]
Transaction Date Range	July 2011-May 2014			Nov-14
Total transaction amount	$135		€ 100	$22	25
Forward purchase date range	August 2015-May 2017			Nov-16
Change in fair value gain (loss)	$18	($5)		$1

Draws_on_Credit_Facility_that_

Draws on Credit Facility that are Designated as Net Investments in International Operations (Detail)

12 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2014

USD ($)

USD ($)

USD ($)

Canadian Dollars

Canadian Dollars

Canadian Dollars

Euros

Euros

Euros

USD ($)

USD ($)

CAD

USD ($)

USD ($)

EUR (€)

Debt Instrument Designated As Hedges Of Net Investment In Foreign Operations [Line Items]

Balance Outstanding

$704

$946

$27

[1]

31

[1]

$93

€ 77

Foreign currency translation and other comprehensive income (loss) of unconsolidated affiliates

($60)

($18)

$20

$2

[1]

$2

[1]

$13

($5)

[1]

We have drawn an additional $65 million on the credit facility in Canadian dollars that has not been designated as a hedging instrument.

Draws_on_Credit_Facility_that_1

Draws on Credit Facility that are Designated as Net Investments in International Operations (Parenthetical) (Detail)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014		Dec. 31, 2014		Dec. 31, 2014
In Millions, unless otherwise specified	USD ($)	USD ($)	Canadian Dollars		Canadian Dollars		Canadian Dollars
			USD ($)		CAD		Not Designated as Hedging Instrument
							USD ($)
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Credit facility	$704	$946	$27	[1]	31	[1]	$65
[1]	We have drawn an additional $65 million on the credit facility in Canadian dollars that has not been designated as a hedging instrument.

Fair_Values_of_Certain_Financi

Fair Values of Certain Financial Assets and Liabilities and Other Financial Instruments (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Financial liabilities
Senior notes (Level 1)	$2,498	$2,647
Exchangeable Senior Debentures (Level 1), carrying value	386	371
Credit facility (Level 2), carrying value	704	946
Mortgage debt and other, excluding capital leases (Level 2), carrying value	4,007
Mortgage debt and other, excluding capital leases
Financial liabilities
Mortgage debt and other, excluding capital leases (Level 2), carrying value	403	793
Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial liabilities
Senior notes (Level 1), fair value	2,668	2,766
Exchangeable Senior Debentures (Level 1), fair value	739	603
Significant Other Observable Inputs (Level 2)
Financial liabilities
Credit facility (Level 2), fair value	704	946
Mortgage debt and other, excluding capital leases (Level 2), fair value	$413	$802

Hotel_Management_Agreements_an1

Hotel Management Agreements and Operating and License Agreements - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2014
	Contract
Long Term Contracts Or Programs Disclosure [Line Items]
Percentage of property revenue allocated for renewal and replacement capital expenditures	5.00%
Lower Limit
Long Term Contracts Or Programs Disclosure [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
Long Term Contracts Or Programs Disclosure [Line Items]
Agreement initial term	15 years
Number of renewal options	1
Upper Limit
Long Term Contracts Or Programs Disclosure [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
Long Term Contracts Or Programs Disclosure [Line Items]
Agreement initial term	25 years
Marriott
Long Term Contracts Or Programs Disclosure [Line Items]
Percentage of revenues	56.00%
Starwood
Long Term Contracts Or Programs Disclosure [Line Items]
Percentage of revenues	25.00%
Base fee percentage	1.00%
Starwood | Occupancy | Licensing Agreements
Long Term Contracts Or Programs Disclosure [Line Items]
Percentage sales paid for fees	5.00%
Starwood | Food and Beverage | Licensing Agreements
Long Term Contracts Or Programs Disclosure [Line Items]
Percentage sales paid for fees	2.00%
Hyatt
Long Term Contracts Or Programs Disclosure [Line Items]
Percentage of revenues	12.00%

Geographic_and_Business_Segmen2

Geographic and Business Segment Information - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2014
	Entity
	Country
Segment Reporting [Abstract]
Number of operating segments	1
Foreign operations, number of countries	6

Revenues_and_LongLived_Assets_

Revenues and Long-Lived Assets by Geographical Area (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Revenues	$5,354	$5,166	$5,059
Property and equipment, net	10,575	10,995	11,588
United States
Segment Reporting Information [Line Items]
Revenues	5,077	4,895	4,791
Property and equipment, net	10,111	10,498	11,095
Australia
Segment Reporting Information [Line Items]
Revenues	39	40	42
Property and equipment, net	102	106	133
Brazil
Segment Reporting Information [Line Items]
Revenues	36	30	33
Property and equipment, net	82	76	39
Canada
Segment Reporting Information [Line Items]
Revenues	87	97	95
Property and equipment, net	82	89	97
Chile
Segment Reporting Information [Line Items]
Revenues	32	34	37
Property and equipment, net	44	54	63
Mexico
Segment Reporting Information [Line Items]
Revenues	29	24	25
Property and equipment, net	26	32	26
New Zealand
Segment Reporting Information [Line Items]
Revenues	54	46	36
Property and equipment, net	$128	$140	$135

Guarantees_and_Contingencies_A

Guarantees and Contingencies - Additional Information (Detail) (USD $)	12 Months Ended			1 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jan. 31, 2013	Jan. 31, 2005
	Hotel	Hotel	Hotel		Hotel
Commitments And Contingencies Disclosure [Line Items]
Aggregate contingent liabilities relating to our former restaurant business	$13
Hotel sold that are still contingently liable for ground lease	5	5	3
Future minimum lease payments	1,788
Guarantor Obligations, Maximum Payment	4
Guarantor obligations, maximum exposure, undiscounted	11
Gain on disposals	229
Guarantee obligation amount	8
Atlanta Marriott Marquis
Commitments And Contingencies Disclosure [Line Items]
Environmental liabilities				5
Ritz San Francisco
Commitments And Contingencies Disclosure [Line Items]
Gain on disposals	3
Contingent Consideration Hotel
Commitments And Contingencies Disclosure [Line Items]
Hotel sold that are still contingently liable for ground lease					2
Future minimum lease payments	$12

Legal_Proceedings_Additional_I

Legal Proceedings - Additional Information (Detail) (USD $)	3 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2010	Dec. 31, 2014	Oct. 17, 2014
Loss Contingencies [Line Items]
Loss contingency accrual			$35,000,000
Estimate of possible losses			57,000,000
Other Litigation Cases
Loss Contingencies [Line Items]
Maximum exposure of litigation			150,000
Keystone
Loss Contingencies [Line Items]
Gain on litigation	69,000,000
Escrow reserve				25,000,000
Keystone | Breach of Contract
Loss Contingencies [Line Items]
Damages awarded		34,300,000
Keystone | Slander
Loss Contingencies [Line Items]
Damages awarded		39,000,000
Keystone | Exemplary Damages Award
Loss Contingencies [Line Items]
Damages awarded		$7,500,000

Quarterly_Financial_Data_Detai

Quarterly Financial Data (Detail) (USD $)	3 Months Ended																12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2014		Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Quarterly Financial Information [Line Items]
Revenues																	$5,354	$5,166	$5,059
Operating profit																	710	512	362
Income from continuing operations																	747	210	-8
Income from discontinued operations																		115	71
NET INCOME																	747	325	63
Net income (loss) attributable to Host Inc.																	732	317	61
Basic earnings per common share/unit
Continuing operations																	$0.97	$0.27	($0.01)
Discontinued operations																		$0.16	$0.09
Basic earnings per common share																	$0.97	$0.43	$0.08
Diluted earnings per common share/unit
Continuing operations																	$0.96	$0.27	($0.01)
Discontinued operations																		$0.15	$0.09
Diluted earnings per common share																	$0.96	$0.42	$0.08
HOST HOTELS & RESORTS, INC.
Quarterly Financial Information [Line Items]
Revenues	1,320		1,294		1,431		1,309		1,331		1,211		1,399		1,224
Operating profit	149		202		225		134		138		79		205		90
Income from continuing operations	258		145		159		185		59		2		116		34
Income from discontinued operations									67		16		5		26
NET INCOME	258		145		159		185		126		18		121		60
Net income (loss) attributable to Host Inc.	254		144		155		179		123		19		119		56			317	61
Basic earnings per common share/unit
Continuing operations	$0.34		$0.19		$0.21		$0.24		$0.07		$0.01		$0.15		$0.04
Discontinued operations									$0.09		$0.02		$0.01		$0.04
Basic earnings per common share	$0.34		$0.19		$0.21		$0.24		$0.16		$0.03		$0.16		$0.08
Diluted earnings per common share/unit
Continuing operations	$0.33		$0.19		$0.21		$0.24		$0.07		$0.01		$0.15		$0.04
Discontinued operations									$0.09		$0.02		$0.01		$0.04
Diluted earnings per common share	$0.33		$0.19		$0.21		$0.24		$0.16		$0.03		$0.16		$0.08
HOST HOTELS & RESORTS L.P.
Quarterly Financial Information [Line Items]
Revenues																	5,354	5,166	5,059
Operating profit																	710	512	362
Income from continuing operations																	747	210	-8
Income from discontinued operations																		115	71
NET INCOME																	747	325	63
Net income (loss) attributable to Host Inc.	$257	[1]	$146	[1]	$157	[1]	$181	[1]	$125	[1]	$19	[1]	$120	[1]	$57	[1]	$741	$321	$62
Basic earnings per common share/unit
Continuing operations	$0.34	[1]	$0.19	[1]	$0.21	[1]	$0.24	[1]	$0.08	[1]	$0.01	[1]	$0.15	[1]	$0.04	[1]	$0.99	$0.28	($0.01)
Discontinued operations									$0.09	[1]	$0.02	[1]	$0.01	[1]	$0.04	[1]		$0.15	$0.10
Basic earnings per common share	$0.34	[1]	$0.19	[1]	$0.21	[1]	$0.24	[1]	$0.17	[1]	$0.03	[1]	$0.16	[1]	$0.08	[1]	$0.99	$0.43	$0.09
Diluted earnings per common share/unit
Continuing operations	$0.34	[1]	$0.19	[1]	$0.21	[1]	$0.24	[1]	$0.08	[1]	$0.01	[1]	$0.15	[1]	$0.04	[1]	$0.99	$0.28	($0.01)
Discontinued operations									$0.09	[1]	$0.02	[1]	$0.01	[1]	$0.04	[1]		$0.15	$0.10
Diluted earnings per common share	$0.34	[1]	$0.19	[1]	$0.21	[1]	$0.24	[1]	$0.17	[1]	$0.03	[1]	$0.16	[1]	$0.08	[1]	$0.99	$0.43	$0.09
[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_De1

Real Estate and Accumulated Depreciation (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Real Estate And Accumulated Depreciation [Line Items]
Debt	$4,007
Initial Costs, Land	2,019
Initial Costs, Buildings & Improvements	9,189
Subsequent Costs Capitalized	4,188
Foreign Currency Adjustment	-70
Land	1,990
Buildings & Improvements	13,336
Total	15,326	15,408	15,661	15,020
Accumulated Depreciation	5,376	5,048	4,768	4,306
Mortgages debt and other
Real Estate And Accumulated Depreciation [Line Items]
Debt	403	793
Atlanta Marriott Perimeter Center
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	15
Initial Costs, Buildings & Improvements	7
Subsequent Costs Capitalized	35
Land	15
Buildings & Improvements	42
Total	57
Accumulated Depreciation	28
Date Acquired	1976
Depreciation Life	40 years
Atlanta Marriott Suites Midtown
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	26
Subsequent Costs Capitalized	9
Buildings & Improvements	35
Total	35
Accumulated Depreciation	18
Date Acquired	1996
Depreciation Life	40 years
Axiom Hotel
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	36
Initial Costs, Buildings & Improvements	38
Land	36
Buildings & Improvements	38
Total	74
Accumulated Depreciation	1
Date Acquired	2014
Depreciation Life	33 years
Boston Marriott Copley Place
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	203
Subsequent Costs Capitalized	67
Buildings & Improvements	270
Total	270
Accumulated Depreciation	108
Date Acquired	2002
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	18
Land	5
Buildings & Improvements	36
Total	41
Accumulated Depreciation	21
Date Acquired	1996
Depreciation Life	40 years
Chicago Marriott O'Hare
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	4
Initial Costs, Buildings & Improvements	26
Subsequent Costs Capitalized	41
Land	5
Buildings & Improvements	66
Total	71
Accumulated Depreciation	40
Date Acquired	1998
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	7
Land	2
Buildings & Improvements	21
Total	23
Accumulated Depreciation	11
Date Acquired	1989
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	9
Land	5
Buildings & Improvements	45
Total	50
Accumulated Depreciation	21
Date Acquired	1997
Depreciation Life	40 years
Coronado Island Marriott Resort & Spa
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	53
Subsequent Costs Capitalized	27
Buildings & Improvements	80
Total	80
Accumulated Depreciation	43
Date Acquired	1997
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	7
Land	3
Buildings & Improvements	25
Total	28
Accumulated Depreciation	14
Date Acquired	1996
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	14
Land	7
Buildings & Improvements	41
Total	48
Accumulated Depreciation	24
Date Acquired	1992
Depreciation Life	40 years
Delta Meadowvale Hotel & Conference Centre
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	4
Initial Costs, Buildings & Improvements	20
Subsequent Costs Capitalized	28
Land	4
Buildings & Improvements	48
Total	52
Accumulated Depreciation	29
Date Acquired	1996
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	29
Land	6
Buildings & Improvements	55
Total	61
Accumulated Depreciation	32
Date Acquired	1994
Depreciation Life	40 years
Denver Marriott West
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	12
Subsequent Costs Capitalized	13
Buildings & Improvements	25
Total	25
Accumulated Depreciation	18
Date Acquired	1983
Depreciation Life	40 years
Embassy Suites Chicago-Downtown/Lakefront
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	86
Subsequent Costs Capitalized	8
Buildings & Improvements	94
Total	94
Accumulated Depreciation	27
Date Acquired	2004
Depreciation Life	40 years
Four Seasons Hotel Philadelphia
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	26
Initial Costs, Buildings & Improvements	60
Subsequent Costs Capitalized	21
Land	27
Buildings & Improvements	80
Total	107
Accumulated Depreciation	39
Date Acquired	1998
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	12
Land	7
Buildings & Improvements	34
Total	41
Accumulated Depreciation	18
Date Acquired	1993
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	27
Land	8
Buildings & Improvements	115
Total	123
Accumulated Depreciation	50
Date Acquired	1998
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	14
Land	154
Buildings & Improvements	261
Total	415
Accumulated Depreciation	24
Date Acquired	2012
Depreciation Life	33 years
Harbor Beach Marriott Resort & Spa
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	62
Subsequent Costs Capitalized	104
Buildings & Improvements	166
Total	166
Accumulated Depreciation	93
Date Acquired	1997
Depreciation Life	40 years
Harbor Beach Marriott Resort & Spa | Mortgages debt and other
Real Estate And Accumulated Depreciation [Line Items]
Debt	150
Hilton Melbourne South Wharf
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	136
Subsequent Costs Capitalized	10
Foreign Currency Adjustment	-37
Buildings & Improvements	109
Total	109
Accumulated Depreciation	14
Date Acquired	2011
Depreciation Life	31 years
Hilton Melbourne South Wharf | Mortgages debt and other
Real Estate And Accumulated Depreciation [Line Items]
Debt	71
Hilton Singer Island Oceanfront Resort
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	2
Initial Costs, Buildings & Improvements	10
Subsequent Costs Capitalized	21
Land	2
Buildings & Improvements	31
Total	33
Accumulated Depreciation	18
Date Acquired	1986
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	41
Buildings & Improvements	51
Total	51
Accumulated Depreciation	44
Date Acquired	1984
Depreciation Life	40 years
Houston Marriott at the Texas Medical Center
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	19
Subsequent Costs Capitalized	20
Buildings & Improvements	39
Total	39
Accumulated Depreciation	26
Date Acquired	1998
Depreciation Life	40 years
Hyatt Place Waikiki Beach
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	12
Initial Costs, Buildings & Improvements	120
Land	12
Buildings & Improvements	120
Total	132
Accumulated Depreciation	7
Date Acquired	2013
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	6
Land	19
Buildings & Improvements	89
Total	108
Accumulated Depreciation	47
Date Acquired	1998
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	36
Land	81
Buildings & Improvements	259
Total	340
Accumulated Depreciation	84
Date Acquired	2003
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	26
Land	12
Buildings & Improvements	103
Total	115
Accumulated Depreciation	45
Date Acquired	1998
Depreciation Life	40 years
Hyatt Regency Reston | Mortgages debt and other
Real Estate And Accumulated Depreciation [Line Items]
Debt	100
Hyatt Regency San Francisco Airport
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	16
Initial Costs, Buildings & Improvements	119
Subsequent Costs Capitalized	54
Land	20
Buildings & Improvements	169
Total	189
Accumulated Depreciation	75
Date Acquired	1998
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	40
Land	40
Buildings & Improvements	270
Total	310
Accumulated Depreciation	71
Date Acquired	2006
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	25
Land	16
Buildings & Improvements	46
Total	62
Accumulated Depreciation	30
Date Acquired	1990
Depreciation Life	40 years
JW Marriott Desert Springs Resort & Spa
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	13
Initial Costs, Buildings & Improvements	143
Subsequent Costs Capitalized	138
Land	13
Buildings & Improvements	281
Total	294
Accumulated Depreciation	134
Date Acquired	1997
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	-16
Land	8
Buildings & Improvements	21
Total	29
Accumulated Depreciation	3
Date Acquired	2010
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	29
Land	6
Buildings & Improvements	53
Total	59
Accumulated Depreciation	31
Date Acquired	1994
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	18
Land	10
Buildings & Improvements	54
Total	64
Accumulated Depreciation	41
Date Acquired	1996
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	44
Land	26
Buildings & Improvements	142
Total	168
Accumulated Depreciation	70
Date Acquired	2003
Depreciation Life	40 years
Kansas City Airport Marriott
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	8
Subsequent Costs Capitalized	25
Buildings & Improvements	33
Total	33
Accumulated Depreciation	30
Date Acquired	1993
Depreciation Life	40 years
Key Bridge Marriott
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	38
Subsequent Costs Capitalized	31
Buildings & Improvements	69
Total	69
Accumulated Depreciation	64
Date Acquired	1997
Depreciation Life	40 years
Manchester Grand Hyatt, San Diego
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	548
Subsequent Costs Capitalized	37
Buildings & Improvements	585
Total	585
Accumulated Depreciation	76
Date Acquired	2011
Depreciation Life	35 years
Manhattan Beach Marriott
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	29
Subsequent Costs Capitalized	28
Buildings & Improvements	57
Total	57
Accumulated Depreciation	31
Date Acquired	1997
Depreciation Life	40 years
Marina del Rey Marriott
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	13
Subsequent Costs Capitalized	28
Buildings & Improvements	41
Total	41
Accumulated Depreciation	21
Date Acquired	1995
Depreciation Life	40 years
Marriott Marquis San Diego Marina
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	202
Subsequent Costs Capitalized	282
Buildings & Improvements	484
Total	484
Accumulated Depreciation	219
Date Acquired	1996
Depreciation Life	40 years
Miami Marriott Biscayne Bay
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	27
Subsequent Costs Capitalized	32
Buildings & Improvements	59
Total	59
Accumulated Depreciation	38
Date Acquired	1998
Depreciation Life	40 years
Minneapolis Marriott City Center
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	27
Subsequent Costs Capitalized	42
Buildings & Improvements	69
Total	69
Accumulated Depreciation	52
Date Acquired	1986
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	116
Land	16
Buildings & Improvements	212
Total	228
Accumulated Depreciation	128
Date Acquired	1996
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	43
Land	19
Buildings & Improvements	122
Total	141
Accumulated Depreciation	65
Date Acquired	1997
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	189
Land	49
Buildings & Improvements	741
Total	790
Accumulated Depreciation	518
Date Acquired	1986
Depreciation Life	40 years
New Zealand Hotel Portfolio
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	34
Initial Costs, Buildings & Improvements	105
Subsequent Costs Capitalized	-3
Foreign Currency Adjustment	4
Land	32
Buildings & Improvements	108
Total	140
Accumulated Depreciation	15
Date Acquired	2011
Depreciation Life	35 years
New Zealand Hotel Portfolio | Mortgages debt and other
Real Estate And Accumulated Depreciation [Line Items]
Debt	82
Newark Liberty International Airport Marriott
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	30
Subsequent Costs Capitalized	34
Buildings & Improvements	64
Total	64
Accumulated Depreciation	34
Date Acquired	1984
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	9
Land	6
Buildings & Improvements	23
Total	29
Accumulated Depreciation	14
Date Acquired	1975
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	115
Land	8
Buildings & Improvements	131
Total	139
Accumulated Depreciation	77
Date Acquired	1975
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	368
Land	29
Buildings & Improvements	514
Total	543
Accumulated Depreciation	226
Date Acquired	1997
Depreciation Life	40 years
Park Ridge Marriott
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	20
Subsequent Costs Capitalized	15
Buildings & Improvements	35
Total	35
Accumulated Depreciation	17
Date Acquired	1987
Depreciation Life	40 years
Philadelphia Airport Marriott
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	42
Subsequent Costs Capitalized	17
Buildings & Improvements	59
Total	59
Accumulated Depreciation	28
Date Acquired	1995
Depreciation Life	40 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	11
Land	6
Buildings & Improvements	40
Total	46
Accumulated Depreciation	20
Date Acquired	1996
Depreciation Life	40 years
Rio De Janeiro Parque Olympico Hotels
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	21
Initial Costs, Buildings & Improvements	38
Foreign Currency Adjustment	-11
Land	16
Buildings & Improvements	32
Total	48
Date of Completion of Construction	2014
Depreciation Life	35 years
San Antonio Marriott Rivercenter
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	86
Subsequent Costs Capitalized	83
Buildings & Improvements	169
Total	169
Accumulated Depreciation	84
Date Acquired	1996
Depreciation Life	40 years
San Antonio Marriott Riverwalk
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	45
Subsequent Costs Capitalized	23
Buildings & Improvements	68
Total	68
Accumulated Depreciation	35
Date Acquired	1995
Depreciation Life	40 years
San Cristobal Tower Santiago
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	7
Initial Costs, Buildings & Improvements	15
Subsequent Costs Capitalized	2
Foreign Currency Adjustment	-4
Land	5
Buildings & Improvements	15
Total	20
Accumulated Depreciation	4
Date Acquired	2006
Depreciation Life	40 years
San Diego Marriott Mission Valley
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	4
Initial Costs, Buildings & Improvements	23
Subsequent Costs Capitalized	16
Land	4
Buildings & Improvements	39
Total	43
Accumulated Depreciation	21
Date Acquired	1998
Depreciation Life	40 years
San Francisco Marriott Fisherman Wharf
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	6
Initial Costs, Buildings & Improvements	20
Subsequent Costs Capitalized	20
Land	6
Buildings & Improvements	40
Total	46
Accumulated Depreciation	25
Date Acquired	1994
Depreciation Life	40 years
San Francisco Marriott Marquis
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	278
Subsequent Costs Capitalized	111
Buildings & Improvements	389
Total	389
Accumulated Depreciation	234
Date Acquired	1989
Depreciation Life	40 years
San Ramon Marriott
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	22
Subsequent Costs Capitalized	22
Buildings & Improvements	44
Total	44
Accumulated Depreciation	22
Date Acquired	1996
Depreciation Life	40 years
Santa Clara Marriott
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	39
Subsequent Costs Capitalized	56
Buildings & Improvements	95
Total	95
Accumulated Depreciation	78
Date Acquired	1989
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	7
Land	8
Buildings & Improvements	55
Total	63
Accumulated Depreciation	15
Date Acquired	2004
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	10
Land	3
Buildings & Improvements	30
Total	33
Accumulated Depreciation	16
Date Acquired	1988
Depreciation Life	40 years
Seattle Airport Marriott
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	3
Initial Costs, Buildings & Improvements	42
Subsequent Costs Capitalized	20
Land	3
Buildings & Improvements	62
Total	65
Accumulated Depreciation	42
Date Acquired	1998
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	67
Land	42
Buildings & Improvements	329
Total	371
Accumulated Depreciation	84
Date Acquired	2006
Depreciation Life	40 years
Sheraton Indianapolis Hotel At Keystone Crossing
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	3
Initial Costs, Buildings & Improvements	51
Subsequent Costs Capitalized	28
Land	3
Buildings & Improvements	79
Total	82
Accumulated Depreciation	21
Date Acquired	2006
Depreciation Life	40 years
Sheraton Memphis Downtown Hotel
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	16
Subsequent Costs Capitalized	48
Buildings & Improvements	64
Total	64
Accumulated Depreciation	28
Date Acquired	1998
Depreciation Life	40 years
Sheraton Needham Hotel
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	5
Initial Costs, Buildings & Improvements	27
Subsequent Costs Capitalized	13
Land	5
Buildings & Improvements	40
Total	45
Accumulated Depreciation	11
Date Acquired	1986
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	194
Land	346
Buildings & Improvements	603
Total	949
Accumulated Depreciation	158
Date Acquired	2006
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	19
Land	8
Buildings & Improvements	49
Total	57
Accumulated Depreciation	15
Date Acquired	2006
Depreciation Life	40 years
Sheraton San Diego Hotel Marina
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	328
Subsequent Costs Capitalized	33
Buildings & Improvements	361
Total	361
Accumulated Depreciation	87
Date Acquired	2006
Depreciation Life	40 years
Sheraton Santiago Hotel Convention Center
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	19
Initial Costs, Buildings & Improvements	11
Subsequent Costs Capitalized	9
Foreign Currency Adjustment	-6
Land	16
Buildings & Improvements	17
Total	33
Accumulated Depreciation	8
Date Acquired	2006
Depreciation Life	40 years
Swissotel Chicago
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	29
Initial Costs, Buildings & Improvements	132
Subsequent Costs Capitalized	83
Land	30
Buildings & Improvements	214
Total	244
Accumulated Depreciation	80
Date Acquired	1998
Depreciation Life	40 years
Tampa Airport Marriott
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	9
Subsequent Costs Capitalized	24
Buildings & Improvements	33
Total	33
Accumulated Depreciation	26
Date Acquired	2000
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	53
Land	55
Buildings & Improvements	347
Total	402
Accumulated Depreciation	97
Date Acquired	2003
Depreciation Life	40 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	71
Land	25
Buildings & Improvements	186
Total	211
Accumulated Depreciation	83
Date Acquired	1998
Depreciation Life	40 years
The Ritz Carlton Buckhead
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	14
Initial Costs, Buildings & Improvements	81
Subsequent Costs Capitalized	63
Land	15
Buildings & Improvements	143
Total	158
Accumulated Depreciation	78
Date Acquired	1996
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	28
Buildings & Improvements	80
Total	80
Accumulated Depreciation	44
Date Acquired	1997
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	132
Land	21
Buildings & Improvements	256
Total	277
Accumulated Depreciation	134
Date Acquired	1996
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	67
Land	22
Buildings & Improvements	77
Total	99
Accumulated Depreciation	25
Date of Completion of Construction	2002
Depreciation Life	40 years
Ritz Carlton Phoenix
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	10
Initial Costs, Buildings & Improvements	63
Subsequent Costs Capitalized	8
Land	10
Buildings & Improvements	71
Total	81
Accumulated Depreciation	33
Date Acquired	1998
Depreciation Life	40 years
Ritz Carlton Tysons Corner
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	89
Subsequent Costs Capitalized	22
Buildings & Improvements	111
Total	111
Accumulated Depreciation	51
Date Acquired	1998
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	20
Land	6
Buildings & Improvements	53
Total	59
Accumulated Depreciation	18
Date Acquired	2006
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	30
Land	6
Buildings & Improvements	113
Total	119
Accumulated Depreciation	48
Date Acquired	1998
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	3
Land	33
Buildings & Improvements	119
Total	152
Accumulated Depreciation	13
Date Acquired	2010
Depreciation Life	40 years
Westin Cincinnati
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	54
Subsequent Costs Capitalized	13
Buildings & Improvements	67
Total	67
Accumulated Depreciation	20
Date Acquired	2006
Depreciation Life	40 years
The Westin Denver Downtown
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	89
Subsequent Costs Capitalized	13
Buildings & Improvements	102
Total	102
Accumulated Depreciation	26
Date Acquired	2006
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	14
Land	16
Buildings & Improvements	94
Total	110
Accumulated Depreciation	26
Date Acquired	2006
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	15
Land	12
Buildings & Improvements	115
Total	127
Accumulated Depreciation	28
Date Acquired	2006
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	22
Land	100
Buildings & Improvements	302
Total	402
Accumulated Depreciation	66
Date Acquired	2006
Depreciation Life	40 years
Westin Los Angeles Airport
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	102
Subsequent Costs Capitalized	17
Buildings & Improvements	119
Total	119
Accumulated Depreciation	31
Date Acquired	2006
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	-41
Land	13
Buildings & Improvements	33
Total	46
Accumulated Depreciation	18
Date Acquired	2006
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	77
Land	156
Buildings & Improvements	229
Total	385
Accumulated Depreciation	48
Date Acquired	2011
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	23
Land	39
Buildings & Improvements	198
Total	237
Accumulated Depreciation	46
Date Acquired	2006
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	13
Buildings & Improvements	59
Total	59
Accumulated Depreciation	28
Date Acquired	2006
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	16
Land	9
Buildings & Improvements	75
Total	84
Accumulated Depreciation	19
Date Acquired	2006
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	20
Buildings & Improvements	47
Total	47
Accumulated Depreciation	27
Date Acquired	1995
Depreciation Life	40 years
W New York
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	138
Initial Costs, Buildings & Improvements	102
Subsequent Costs Capitalized	69
Land	138
Buildings & Improvements	171
Total	309
Accumulated Depreciation	52
Date Acquired	2006
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	8
Land	48
Buildings & Improvements	153
Total	201
Accumulated Depreciation	18
Date Acquired	2010
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	5
Land	11
Buildings & Improvements	130
Total	141
Accumulated Depreciation	29
Date Acquired	2006
Depreciation Life	40 years
Washington Dulles Airport Marriott
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	3
Subsequent Costs Capitalized	39
Buildings & Improvements	42
Total	42
Accumulated Depreciation	34
Date Acquired	1970
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	26
Land	20
Buildings & Improvements	50
Total	70
Accumulated Depreciation	29
Date Acquired	1994
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	17
Land	7
Buildings & Improvements	49
Total	56
Accumulated Depreciation	28
Date Acquired	1994
Depreciation Life	40 years
Yve Hotel Miami
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	15
Initial Costs, Buildings & Improvements	41
Land	15
Buildings & Improvements	41
Total	56
Accumulated Depreciation	1
Date Acquired	2014
Depreciation Life	33 years
Total Hotels
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Land	2,019
Initial Costs, Buildings & Improvements	9,185
Subsequent Costs Capitalized	4,171
Foreign Currency Adjustment	-70
Land	1,986
Buildings & Improvements	13,319
Total	15,305
Accumulated Depreciation	5,364
Total Hotels | Mortgages debt and other
Real Estate And Accumulated Depreciation [Line Items]
Debt	403
Other Properties
Real Estate And Accumulated Depreciation [Line Items]
Initial Costs, Buildings & Improvements	4
Subsequent Costs Capitalized	17
Land	4
Buildings & Improvements	17
Total	21
Accumulated Depreciation	$12
Date Acquired	various
Depreciation Life	40 years

Real_Estate_and_Accumulated_De2

Real Estate and Accumulated Depreciation (Parenthetical) (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014
Real Estate And Accumulated Depreciation [Line Items]
Cost of real estate for federal income tax purposes	10,390
Upper Limit
Real Estate And Accumulated Depreciation [Line Items]
Other properties, percentage	5.00%

Reconciliation_of_Carrying_Amo

Reconciliation of Carrying Amounts of Real Estate Investments (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Earnings Per Share [Abstract]
Beginning Balance	$15,408	$15,661	$15,020
Additions:
Acquisitions	137	184	427
Capital expenditures and transfers from construction-in-progress	288	353	443
Deductions:
Dispositions and other	-501	-789	-172
Impairments	-6	-1	-57
Ending Balance	$15,326	$15,408	$15,661

Change_in_Accumulated_Deprecia

Change in Accumulated Depreciation and Amortization of Real Estate Assets (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Real Estate And Accumulated Depreciation Other Required Disclosures [Abstract]
Beginning Balance	$5,048	$4,768	$4,306
Depreciation and amortization	547	550	537
Dispositions and other	-219	-270	-75
Ending Balance	$5,376	$5,048	$4,768