Consolidated Statements of Stockholder Equity (Deficit) - USD ($) $ in Millions		Total		Total stockholder equity (deficit)	Common stock	Capital surplus	(Accumulated deficit) retained earnings	Treasury stock	Cumulative translation adjustment	Defined benefit postretirement plans	Cash flow hedging derivative	Non-controlling interest
Balance at beginning of period at Dec. 31, 2019		$ 1,577.3		$ 1,519.1	$ 0.0	$ 2,116.9	$ (573.6)	$ 0.0	$ 0.9	$ (24.0)	$ (1.1)	$ 58.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		(111.6)		(116.5)			(116.5)					4.9
Accretion - Series A Preferred Stock	[1]	(36.1)		(36.1)		(36.1)
Issuance of Class A Common Stock in IPO and Private Placement, net of issuance costs		2,248.2		2,248.2		2,248.2
Equity-based compensation plans	[2]	45.3		45.3		45.3
Pension adjustments, net of tax expense (benefit)		(96.3)		(96.3)						(96.3)
Change in cumulative translation adjustment, net of tax expense (income)		28.5	[3]	25.3					25.3			3.2
Net investment hedge derivative, net of tax expense	[4]	0.0
Cash flow hedge derivative, net of tax expense		0.7	[5]	0.7							0.7
Preferred dividend	[1]	(64.1)		(64.1)		(64.1)
Payment to non-controlling interest		(8.0)										(8.0)
Balance at end of period at Dec. 31, 2020		3,583.9		3,525.6	0.0	4,310.2	(690.1)	0.0	26.2	(120.3)	(0.4)	58.3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		(65.9)		(71.7)			(71.7)					5.8
Shares issued for Bisnode acquisition		158.9		158.9		158.9
Equity-based compensation plans		31.0		31.0		31.3		(0.3)
Pension adjustments, net of tax expense (benefit)		108.4		108.4						108.4
Change in cumulative translation adjustment, net of tax expense (income)		(76.6)	[3]	(78.8)					(78.8)			2.2
Net investment hedge derivative, net of tax expense	[4]	0.0
Cash flow hedge derivative, net of tax expense		7.8	[5]	7.8							7.8
Payment to non-controlling interest		(2.2)										(2.2)
Balance at end of period at Dec. 31, 2021		3,745.3		3,681.2	0.0	4,500.4	(761.8)	(0.3)	(52.6)	(11.9)	7.4	64.1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		4.1		(2.3)			(2.3)					6.4
Purchase of non-controlling interest	[6]	(116.2)		(73.8)		(73.8)						(42.4)
Reclassification of cumulative translation adjustment related to the purchase of non-controlling interest		0.0		(3.8)					(3.8)			3.8
Equity-based compensation plans		60.7		60.7		60.7
Dividends declared	[7]	(43.6)		(43.6)		(43.6)
Pension adjustments, net of tax expense (benefit)		(46.2)		(46.2)						(46.2)
Change in cumulative translation adjustment, net of tax expense (income)		(124.6)	[3]	(115.9)					(115.9)			(8.7)
Net investment hedge derivative, net of tax expense		2.0	[4]	2.0					2.0
Cash flow hedge derivative, net of tax expense		41.0	[5]	41.0							41.0
Payment to non-controlling interest		(14.1)										(14.1)
Balance at end of period at Dec. 31, 2022		$ 3,508.4		$ 3,499.3	$ 0.0	$ 4,443.7	$ (764.1)	$ (0.3)	$ (170.3)	$ (58.1)	$ 48.4	$ 9.1

[1] Related to Series A Preferred Stock which was fully redeemed in July 2020. Prior to the redemption, on May 14, 2020 and March 4, 2020, the board of directors of Dun & Bradstreet Holdings, Inc. declared a cash dividend of $30.51 per share to all holders of shares of Series A Preferred Stock. An aggregate amount of $32.1 million and $32.0 million was paid on June 26, 2020 and March 27, 2020, respectively.

[2] Includes $0.2 million related to the conversion of pre-IPO liability classified equity-based awards into restricted stock units.

[3] 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.

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

[5] 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.

[6] See Note 17 "Supplemental Financial Data" for further discussion.

[7] See Note 13 "Earnings (Loss) Per Share" for further discussion.