Consolidated Statements of Operations and Comprehensive Income (Loss) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Statement [Abstract]
Revenue		$ 2,381.7	$ 2,314.0	$ 2,224.6
Cost of services (exclusive of depreciation and amortization)		899.7	861.8	757.4
Selling and administrative expenses		692.7	711.9	709.6
Depreciation and amortization		577.6	586.8	587.2
Restructuring charges		16.9	13.2	20.5
Operating costs		2,186.9	2,173.7	2,074.7
Operating income (loss)		194.8	140.3	149.9
Interest income		7.3	5.8	2.2
Interest expense		(263.7)	(221.9)	(193.2)
Other income (expense) - net		0.3	(5.3)	13.9
Non-operating income (expense) - net		(256.1)	(221.4)	(177.1)
Income (loss) before provision (benefit) for income taxes and equity in net income of affiliates		(61.3)	(81.1)	(27.2)
Less: provision (benefit) for income taxes		(33.7)	(34.2)	(28.8)
Equity in net income of affiliates		3.1	3.2	2.5
Net income (loss)		(24.5)	(43.7)	4.1
Less: net (income) loss attributable to the non-controlling interest		(4.1)	(3.3)	(6.4)
Net income (loss) attributable to Dun & Bradstreet Holdings, Inc.		$ (28.6)	$ (47.0)	$ (2.3)
Basic earnings (loss) per share of common stock:
Net income (loss) attributable to Dun & Bradstreet Holdings, Inc.		$ (0.07)	$ (0.11)	$ (0.01)
Diluted earnings (loss) per share of common stock:
Net income (loss) attributable to Dun & Bradstreet Holdings, Inc.		$ (0.07)	$ (0.11)	$ (0.01)
Weighted average number of shares outstanding-basic (in shares)		432,354,671	430,495,779	429,106,164
Weighted average number of shares outstanding-diluted (in shares)		432,354,671	430,495,779	429,106,164
Other comprehensive income (loss), net of income taxes:
Net income (loss)		$ (24.5)	$ (43.7)	$ 4.1
Foreign currency adjustments:
Foreign currency translation adjustments, net of tax	[1]	(76.9)	29.9	(124.6)
Net investment hedge derivative, net of tax	[2]	17.8	(12.5)	2.0
Cash flow hedge derivative, net of tax expense (benefit)	[3]	11.4	(31.9)	41.0
Defined benefit pension plans:
Prior service credit (cost), net of tax expense (benefit)	[4]	0.1	0.1	(0.2)
Net actuarial gain (loss), net of tax expense (benefit)	[5]	(0.5)	(4.2)	(46.0)
Total other comprehensive income (loss), net of tax		(48.1)	(18.6)	(127.8)
Comprehensive income (loss), net of tax		(72.6)	(62.3)	(123.7)
Less: comprehensive (income) loss attributable to the non-controlling interest		(3.4)	(3.4)	2.3
Comprehensive income (loss) attributable to Dun & Bradstreet Holdings, Inc.		$ (76.0)	$ (65.7)	$ (121.4)

[1] Tax Expense (Benefit) of $(0.5) million, $7.9 million and $(9.9) million, for the years ended December 31, 2024, 2023 and 2022, respectively.

[2] Tax Expense (Benefit) of $6.4 million, $(4.5) million and $0.9 million for the years ended December 31, 2024, 2023 and 2022, respectively.

[3] Tax Expense (Benefit) of $4.0 million, $(11.5) million and $14.6 million, for the years ended December 31, 2024, 2023 and 2022, respectively.

[4] Tax Expense (Benefit) of $(0.8) million, less than $0.1 million and $(0.1) million for the years ended December 31, 2024, 2023 and 2022, respectively.

[5] Tax Expense (Benefit) of $2.6 million, $(1.8) million and $(15.6) million for the years ended December 31, 2024, 2023 and 2022, respectively.