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Relationship with Marriott International	12 Months Ended
	Dec. 31, 2024
Related Party Transactions [Abstract]
Relationship with Marriott International	Relationship with Marriott International We have entered into various agreements with Marriott, including those for the management or franchise of approximately 60% of our hotels (as measured by revenues) and certain limited administrative services. In 2024, 2023 and 2022, we paid Marriott $180 million, $168 million and $136 million, respectively, of hotel management fees and approximately $8.3 million, $8.1 million, and $7.7 million, respectively, of franchise fees.

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- Definition

This element captures specific agreements including any negotiated amendments specifically with the manager of the majority of the entity's owned-hotels.

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No definition available.

+ Details

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Namespace Prefix:	hst_
Data Type:	dtr-types1:textBlockItemType
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Period Type:	duration

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- References

No definition available.

+ Details

Name:	us-gaap_RelatedPartyTransactionsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration