| Cover | Dec. 03, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Dec. 03, 2024 |
| Entity Registrant Name | UL Solutions Inc. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-42012 |
| Entity Tax Identification Number | 27-0913800 |
| Entity Address, Address Line One | 333 Pfingsten Rd |
| Entity Address, City or Town | Northbrook |
| Entity Address, State or Province | IL |
| Entity Address, Postal Zip Code | 60062 |
| City Area Code | 847 |
| Local Phone Number | 272-8800 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Class A Common Stock, par value $0.001 per share |
| Trading Symbol | ULS |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
| Amendment Flag | false |
| Entity Central Index Key | 0001901440 |
