| Cover Page | Jan. 07, 2022 |
| Cover [Abstract] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001799208 |
| Document Type | 8-K |
| Document Period End Date | Jan. 7, 2022 |
| Entity Registrant Name | Dun & Bradstreet Holdings, Inc. |
| Entity File Number | 1-39361 |
| Entity Incorporation, State or Country Code | DE |
| Entity Tax Identification Number | 83-2008699 |
| Entity Address, Address Line One | 101 JFK Parkway |
| Entity Address, City or Town | Short Hills |
| Entity Address, State or Province | NJ |
| Entity Address, Postal Zip Code | 07078 |
| City Area Code | 973 |
| Local Phone Number | 921-5500 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $0.0001 par value |
| Trading Symbol | DNB |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
