| Cover Page | Jun. 14, 2022 |
| Entity Information [Line Items] | |
| Document Type | 8-K/A |
| Amendment Flag | true |
| Document Period End Date | Jun. 14, 2022 |
| Entity File Number | 001-14387 |
| Entity Registrant Name | UNITED RENTALS, INC. |
| Entity Central Index Key | 0001067701 |
| Entity Tax Identification Number | 06-1522496 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 100 First Stamford Place |
| Entity Address, Address Line Two | Suite 700 |
| Entity Address, City or Town | Stamford |
| Entity Address, State or Province | CT |
| Entity Address, Postal Zip Code | 06902 |
| City Area Code | 203 |
| Local Phone Number | 622-3131 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $0.01 par value |
| Trading Symbol | URI |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
| Amendment Description | This Amendment No. 1 amends the current report on Form 8-K of United Rentals, Inc. (the “Company”) dated June 14, 2022 (the “Original Filing”) to disclose certain compensation arrangements of William (Ted) Grace in connection with his appointment as Interim Chief Financial Officer of the Company. At the time of the Original Filing, such compensation arrangements had not been determined. |
| United Rentals North America Inc [Member] | |
| Entity Information [Line Items] | |
| Document Type | 8-K/A |
| Amendment Flag | true |
| Document Period End Date | Jun. 14, 2022 |
| Entity File Number | 001-13663 |
| Entity Registrant Name | UNITED RENTALS (NORTH AMERICA), INC. |
| Entity Central Index Key | 0001047166 |
| Entity Tax Identification Number | 86-0933835 |
| Entity Incorporation, State or Country Code | DE |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Amendment Description | This Amendment No. 1 amends the current report on Form 8-K of United Rentals, Inc. (the “Company”) dated June 14, 2022 (the “Original Filing”) to disclose certain compensation arrangements of William (Ted) Grace in connection with his appointment as Interim Chief Financial Officer of the Company. At the time of the Original Filing, such compensation arrangements had not been determined. |
