Employee Stock Plans - Assumption used with Black Scholes Option Valuations Models (Details) - NAREIT Lodging & Resorts Index - $ / shares	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
2022 Award Grants
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Market price per Host Inc. common share	$ 18.45
Volatility	45.00%
Beta	0.667
2022 Award Grants \| Three Year Award
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free rate	1.61%
2021 Award Grants
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Market price per Host Inc. common share		$ 14.13
Volatility		43.20%
Beta		0.669
2021 Award Grants \| Three Year Award
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free rate		0.18%

Share based compensation arrangement by share based payment award fair value assumptions beta.

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(iv)
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- Definition

Rate of weighted-average expected volatility for award under share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(ii)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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- Definition

Price of a single share of a number of saleable stocks of a company.

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