Acquisitions - Pro Forma Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Revenue	$ 2,224.6	$ 2,165.6	$ 1,738.7
Total pro forma revenue		2,210.1	2,113.0
Net income (loss) attributable to Dun & Bradstreet Holdings, Inc. (Successor) / The Dun & Bradstreet Corporation (Predecessor), basic	(2.3)	(71.7)	(180.6)
Net income (loss) attributable to Dun & Bradstreet Holdings, Inc. (Successor) / The Dun & Bradstreet Corporation (Predecessor), diluted	$ (2.3)	(71.7)	(180.6)
Bisnode
Business Acquisition [Line Items]
Revenue		4.6	400.0
Pro forma net income (loss) attributable to Dun & Bradstreet Holdings, Inc.		(68.2)	(178.1)
Bisnode | Pre-acquisition Revenue Adjustment
Business Acquisition [Line Items]
Revenue		0.0	(21.0)
Bisnode | Adjustments To Revenue Received from Acquiree
Business Acquisition [Line Items]
Revenue		0.0	(43.0)
Bisnode | Pre-acquisition net income (loss)
Business Acquisition [Line Items]
Net income (loss) attributable to Dun & Bradstreet Holdings, Inc. (Successor) / The Dun & Bradstreet Corporation (Predecessor), basic		0.8	57.2
Net income (loss) attributable to Dun & Bradstreet Holdings, Inc. (Successor) / The Dun & Bradstreet Corporation (Predecessor), diluted		0.8	57.2
Bisnode | Intangible amortization - net of tax benefits
Business Acquisition [Line Items]
Net income (loss) attributable to Dun & Bradstreet Holdings, Inc. (Successor) / The Dun & Bradstreet Corporation (Predecessor), basic		(1.1)	(56.8)
Net income (loss) attributable to Dun & Bradstreet Holdings, Inc. (Successor) / The Dun & Bradstreet Corporation (Predecessor), diluted		(1.1)	(56.8)
Bisnode | Write off related to pre-existing relationship - net of tax benefits
Business Acquisition [Line Items]
Net income (loss) attributable to Dun & Bradstreet Holdings, Inc. (Successor) / The Dun & Bradstreet Corporation (Predecessor), basic		2.3	(2.3)
Net income (loss) attributable to Dun & Bradstreet Holdings, Inc. (Successor) / The Dun & Bradstreet Corporation (Predecessor), diluted		2.3	(2.3)
Bisnode | Transaction costs - net of tax benefits
Business Acquisition [Line Items]
Net income (loss) attributable to Dun & Bradstreet Holdings, Inc. (Successor) / The Dun & Bradstreet Corporation (Predecessor), basic		3.0	3.5
Net income (loss) attributable to Dun & Bradstreet Holdings, Inc. (Successor) / The Dun & Bradstreet Corporation (Predecessor), diluted		3.0	3.5
Eyeota
Business Acquisition [Line Items]
Revenue		31.5	31.5
Net income (loss) attributable to Dun & Bradstreet Holdings, Inc. (Successor) / The Dun & Bradstreet Corporation (Predecessor), basic		(0.3)	(0.3)
Net income (loss) attributable to Dun & Bradstreet Holdings, Inc. (Successor) / The Dun & Bradstreet Corporation (Predecessor), diluted		(0.3)	(0.3)
NetWise
Business Acquisition [Line Items]
Revenue		8.4	6.8
Net income (loss) attributable to Dun & Bradstreet Holdings, Inc. (Successor) / The Dun & Bradstreet Corporation (Predecessor), basic		(1.2)	1.2
Net income (loss) attributable to Dun & Bradstreet Holdings, Inc. (Successor) / The Dun & Bradstreet Corporation (Predecessor), diluted		$ (1.2)	$ 1.2