XML 54 R41.htm IDEA: XBRL DOCUMENT
v3.24.1.u1

Earnings Per Common Share (Unit) - Additional Information (Detail) - shares shares in Millions | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Shares Subject to Mandatory Redemption by Settlement Terms [Line Items] |  |
Common units outstanding | 9.5 | 9.5
HOST HOTELS & RESORTS L.P. | Redeemable Non Controlling Interests |  |
Shares Subject to Mandatory Redemption by Settlement Terms [Line Items] |  |
Common units outstanding | 9.5 |
Number of common shares if converted | 9.7 |

X
- Definition Shares If Units Of Partnership Converted, Amount + References No definition available. + Details
Name: | hst_SharesIfUnitsOfPartnershipConvertedAmount
Namespace Prefix: | hst_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- 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 No definition available. + Details
Name: | us-gaap_SharesSubjectToMandatoryRedemptionBySettlementTermsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of units or equivalent units outstanding for all classes. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -Subparagraph (SAB TOPIC 4.F) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480008/505-10-S99-5 + Details
Name: | us-gaap_UnitsOfPartnershipInterestAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=hst_HostHotelsResortsLimitedPartnershipSubsidiariesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PartnerCapitalComponentsAxis=hst_RedeemableNonControllingInterestsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |