Significant accounting policies.

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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

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Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership.

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Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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No definition available.

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- Definition

Amount of cumulative effect of the change in accounting principle or new accounting pronouncement on retained earnings or other components of equity or net assets in the statement of financial position as of the beginning of the earliest period presented.

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Amount of the effect of a change in accounting principle on net income.

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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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The carrying amount of the consolidated Variable Interest Entity's assets included in the reporting entity's statement of financial position.

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The carrying amount of the consolidated Variable Interest Entity's liabilities included in the reporting entity's statement of financial position.

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Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Significant Accounting Policies [Line Items]
Cumulative effect of new accounting principle in period of adoption	$ 0		$ 0
Total assets, adjustment applied due to new accounting principle in period of adoption	11,592,000,000		11,592,000,000		$ 11,656,000,000
Total liabilities, adjustment applied due to new accounting principle in period of adoption	4,231,000,000		4,231,000,000		4,409,000,000
Change on total revenues due to new accounting principle in period of adoption	1,459,000,000	$ 1,439,000,000	2,798,000,000	$ 2,741,000,000
Advances to and investments in affiliates	311,000,000		311,000,000		324,000,000
Variable Interest Entities
Significant Accounting Policies [Line Items]
Total assets of VIE	62,000,000		62,000,000
Liabilities of VIE	$ 3,000,000		$ 3,000,000
HOST HOTELS & RESORTS, INC.
Significant Accounting Policies [Line Items]
Percentage of the common OP units	99.00%		99.00%
Philadelphia Marriott Downtown \| Limited Partnership Interests Of Parent Company Ownership
Significant Accounting Policies [Line Items]
General partner and limited partner interest			11.00%
General Partner \| HOST HOTELS & RESORTS, INC.
Significant Accounting Policies [Line Items]
Percentage of the common OP units	99.00%		99.00%
General Partner \| Houston Airport Marriott
Significant Accounting Policies [Line Items]
General partner and limited partner interest			85.00%
Fort Lauderdale Marriott Harbor Beach Resort \| General Partner
Significant Accounting Policies [Line Items]
Investment ownership percentage	49.90%		49.90%
ASU 2015-02
Significant Accounting Policies [Line Items]
Change on net income due to new accounting principle in period of adoption		(2,000,000)		(7,000,000)
Effect on equity due to new accounting principle in period of adoption	$ 0		$ 0
ASU 2015-02 \| Variable Interest Entities Not Primary Beneficiary
Significant Accounting Policies [Line Items]
Advances to and investments in affiliates	$ (7,000,000)		$ (7,000,000)
ASU 2015-02 \| Restatement Adjustment
Significant Accounting Policies [Line Items]
Total assets, adjustment applied due to new accounting principle in period of adoption					(128,000,000)
Total liabilities, adjustment applied due to new accounting principle in period of adoption					$ (150,000,000)
Change on total revenues due to new accounting principle in period of adoption		$ (10,000,000)		$ (25,000,000)