Consolidated Statements of Operations and Comprehensive Income (Loss) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Revenue		$ 2,224.6	$ 2,165.6	$ 1,738.7
Cost of services (exclusive of depreciation and amortization)		721.4	664.3	548.2
Selling and administrative expenses		745.6	714.7	559.8
Depreciation and amortization		587.2	615.9	537.8
Restructuring charges		20.5	25.1	37.3
Operating costs		2,074.7	2,020.0	1,683.1
Operating income (loss)		149.9	145.6	55.6
Interest income		2.2	0.7	0.7
Interest expense		(193.2)	(206.4)	(271.1)
Other income (expense) - net		13.9	14.9	(11.6)
Non-operating income (expense) - net		(177.1)	(190.8)	(282.0)
Income (loss) before provision (benefit) for income taxes and equity in net income of affiliates		(27.2)	(45.2)	(226.4)
Less: provision (benefit) for income taxes		(28.8)	23.4	(112.4)
Equity in net income of affiliates		2.5	2.7	2.4
Net income (loss)		4.1	(65.9)	(111.6)
Less: net (income) loss attributable to the non-controlling interest		(6.4)	(5.8)	(4.9)
Less: Dividends allocated to preferred stockholders		0.0	0.0	(64.1)
Net income (loss) attributable to Dun & Bradstreet Holdings, Inc.		$ (2.3)	$ (71.7)	$ (180.6)
Basic earnings (loss) per share of common stock:
Net income (loss) attributable to Dun & Bradstreet Holdings, Inc.		$ (0.01)	$ (0.17)	$ (0.49)
Diluted earnings (loss) per share of common stock:
Net income (loss) attributable to Dun & Bradstreet Holdings, Inc.		$ (0.01)	$ (0.17)	$ (0.49)
Weighted average number of shares outstanding - basic (shares)		429,106,164	428,666,791	367,132,099
Weighted average number of shares outstanding - diluted (shares)		429,106,164	428,666,791	367,132,099
Other comprehensive income (loss), net of income taxes:
Net income (loss)		$ 4.1	$ (65.9)	$ (111.6)
Foreign currency adjustments:
Foreign currency translation adjustments, net of tax	[1]	(124.6)	(76.6)	28.5
Net investment hedge derivative, net of tax	[2]	2.0	0.0	0.0
Cash flow hedge derivative, net of tax expense (benefit)	[3]	41.0	7.8	0.7
Defined benefit pension plans:
Prior service credit (cost), net of tax expense (benefit)	[4]	(0.2)	(0.2)	(0.8)
Net actuarial gain (loss), net of tax expense (benefit)	[5]	(46.0)	108.6	(95.5)
Total other comprehensive income (loss), net of tax		(127.8)	39.6	(67.1)
Comprehensive income (loss), net of tax		(123.7)	(26.3)	(178.7)
Less: comprehensive (income) loss attributable to the non-controlling interest		2.3	(8.0)	(8.1)
Comprehensive income (loss) attributable to Dun & Bradstreet Holdings, Inc.		$ (121.4)	$ (34.3)	$ (186.8)

[1] Tax Expense (Benefit) of $(9.9) million, $(1.6) million and $2.9 million, for the years ended December 31, 2022, 2021 and 2020, respectively.

[2] Tax Expense (Benefit) of $0.9 million for the year ended December 31, 2022.

[3] Tax Expense (Benefit) of $14.6 million, $2.8 million and $0.2 million, for the years ended December 31, 2022, 2021 and 2020, respectively.

[4] Tax Expense (Benefit) of $(0.1) million, $0.1 million and $(0.2) million for the years ended December 31, 2022, 2021 and 2020, respectively.

[5] Tax Expense (Benefit) of $(15.6) million, $38.9 million and $(32.2) million for the years ended December 31, 2022, 2021 and 2020, respectively.