| Cover Page | Dec. 09, 2019 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Dec. 9, 2019 |
| Trading Symbol | HST |
| Entity Registrant Name | HOST HOTELS & RESORTS, INC. |
| Entity Central Index Key | 0001070750 |
| Title of 12(b) Security | Common Stock, $0.01 par value |
| Security Exchange Name | NYSE |
| Entity File Number | 001-14625 |
| Entity Incorporation, State or Country Code | MD |
| Entity Tax Identification Number | 53-0085950 |
| Entity Address, Address Line One | 4747 Bethesda Avenue |
| Entity Address, Address Line Two | Suite 1300 |
| Entity Address, City or Town | Bethesda |
| Entity Address, State or Province | MD |
| Entity Address, Postal Zip Code | 20814 |
| City Area Code | 240 |
| Local Phone Number | 744-1000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Former Address [Member] | |
| Document Information [Line Items] | |
| Entity Address, Address Line One | 6903 Rockledge Drive |
| Entity Address, Address Line Two | Suite 1500 |
| Entity Address, City or Town | Bethesda |
| Entity Address, State or Province | MD |
| Entity Address, Postal Zip Code | 20817 |
| HOST HOTELS RESORTS LP [Member] | |
| Document Information [Line Items] | |
| Entity Registrant Name | HOST HOTELS & RESORTS, L.P. |
| Entity Central Index Key | 0001061937 |
| Entity File Number | 0-25087 |
| Entity Incorporation, State or Country Code | DE |
| Entity Tax Identification Number | 52-2095412 |
