Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Income Statement [Abstract]
Revenue		$ 585.2	$ 576.2	$ 1,165.0	$ 1,140.7
Cost of services (exclusive of depreciation and amortization)		242.4	220.1	470.2	444.2
Selling and administrative expenses		181.5	174.4	350.6	350.8
Depreciation and amortization		146.5	141.3	291.2	285.3
Restructuring charges		2.0	3.3	4.9	6.7
Operating costs		572.4	539.1	1,116.9	1,087.0
Operating income (loss)		12.8	37.1	48.1	53.7
Interest income		1.8	1.2	3.3	2.8
Interest expense		(50.3)	(59.0)	(103.2)	(144.3)
Other income (expense) - net		1.7	1.4	3.0	1.5
Non-operating income (expense) - net		(46.8)	(56.4)	(96.9)	(140.0)
Income (loss) before provision (benefit) for income taxes and equity in net income of affiliates		(34.0)	(19.3)	(48.8)	(86.3)
Less: provision (benefit) for income taxes		(1.2)	(2.9)	(0.8)	(47.1)
Equity in net income of affiliates		0.2	0.7	0.6	1.6
Net income (loss)		(32.6)	(15.7)	(47.4)	(37.6)
Less: net (income) loss attributable to the non-controlling interest		(1.1)	(0.7)	(2.1)	(2.0)
Net income (loss) attributable to Dun & Bradstreet Holdings, Inc.		$ (33.7)	$ (16.4)	$ (49.5)	$ (39.6)
Basic earnings (loss) per share of common stock attributable to Dun & Bradstreet Holdings, Inc. (in USD per share)		$ (0.08)	$ (0.04)	$ (0.11)	$ (0.09)
Diluted earnings (loss) per share of common stock attributable to Dun & Bradstreet Holdings, Inc. (in USD per share)		$ (0.08)	$ (0.04)	$ (0.11)	$ (0.09)
Weighted average number of shares outstanding-basic (in shares)		435,358,541	432,749,213	434,342,255	432,152,568
Weighted average number of shares outstanding-diluted (in shares)		435,358,541	432,749,213	434,342,255	432,152,568
Other comprehensive income (loss), net of income taxes:
Net income (loss)		$ (32.6)	$ (15.7)	$ (47.4)	$ (37.6)
Foreign currency adjustments:
Foreign currency translation adjustments, net of tax	[1]	87.1	(0.5)	147.4	(36.0)
Net investment hedge derivative, net of tax	[2]	(44.9)	3.5	(60.8)	8.4
Cash flow hedge derivative, net of tax expense (benefit)	[3]	(9.0)	(0.4)	(22.5)	4.3
Defined benefit pension plans:
Prior service credit (cost), net of tax expense (benefit)	[4]	(0.1)	(0.2)	(0.2)	(0.3)
Net actuarial gain (loss), net of tax expense (benefit)	[5]	(0.3)	(0.3)	(0.6)	(0.6)
Total other comprehensive income (loss), net of tax		32.8	2.1	63.3	(24.2)
Comprehensive income (loss), net of tax		0.2	(13.6)	15.9	(61.8)
Less: comprehensive (income) loss attributable to the non-controlling interest		(1.5)	(0.6)	(2.7)	(1.8)
Comprehensive income (loss) attributable to Dun & Bradstreet Holdings, Inc.		$ (1.3)	$ (14.2)	$ 13.2	$ (63.6)

[1] Tax Expense (Benefit) of $4.4 million and $(0.3) million for the three months ended June 30, 2025 and 2024, respectively. Tax Expense (Benefit) of $(1.1) million and $0.3 million for the six months ended June 30, 2025 and 2024, respectively.

[2] Tax Expense (Benefit) of $(16.0) million and $1.2 million for the three months ended June 30, 2025 and 2024, respectively. Tax Expense (Benefit) of $(21.8) million and $2.9 million for the six months ended June 30, 2025 and 2024, respectively.

[3] Tax Expense (Benefit) of $(3.2) million and $(0.1) million for the three months ended June 30, 2025 and 2024, respectively. Tax Expense (Benefit) of $(8.1) million and $1.5 million for the six months ended June 30, 2025 and 2024, respectively.

[4] Tax Expense (Benefit) of less than $(0.1) million for both the three months ended June 30, 2025 and 2024. Tax Expense (Benefit) of less than $(0.1) million for both the six months ended June 30, 2025 and 2024.

[5] Tax Expense (Benefit) of less than $(0.1) million for both the three months ended June 30, 2025 and 2024. Tax Expense (Benefit) of less than $(0.1) million for both the six months ended June 30, 2025 and 2024.