Earnings (Loss) Per Share (Tables)

12 Months Ended

Dec. 31, 2020

Earnings Per Share [Abstract]

Schedule of Basic and Diluted Earnings (Loss) per Share

The following table sets forth the computation of basic and diluted earnings (loss) per share:

	Successor				Predecessor
	Year ended December 31, 2020		Period from January 1 to December 31, 2019		Period from January 1 to February 7, 2019		Year ended December 31, 2018
Net income (loss) attributable to Dun & Bradstreet Holdings, Inc. (Successor) / The Dun & Bradstreet Corporation (Predecessor)	$	(175.6)	$	(674.0)	$	(75.6)	$	288.1
Weighted average number of shares outstanding-basic	367.1		314.5		37.2		37.1
Weighted average number of shares outstanding-diluted	367.1		314.5		37.2		37.3
Earnings (loss) per share of common stock:
Basic	$	(0.48)	$	(2.14)	$	(2.04)	$	7.76
Diluted	$	(0.48)	$	(2.14)	$	(2.04)	$	7.72

Schedule of Reconciliation of Common Stock Issued and Outstanding

Below is a reconciliation of our Successor common stock issued and outstanding:

Common shares issued and outstanding as of January 1, 2019	314,494,968
Shares issued	—
Common shares issued and outstanding as of December 31, 2019	314,494,968
Shares issued in connection with IPO and private placement	108,506,312
Issuance of restricted stock awards	416,851
Common shares issued as of December 31, 2020	423,418,131
Less: treasury shares	465,903
Common shares outstanding as of December 31, 2020	422,952,228