Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions		1 Months Ended		12 Months Ended
		Feb. 07, 2019		Dec. 31, 2020	Dec. 31, 2019		Dec. 31, 2018
Cash flows provided by (used in) operating activities:
Net income (loss)		$ (74.8)	[1]	$ (106.5)	$ (553.5)	[1]	$ 294.3
Reconciliation of net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization		11.1		536.9	482.4		88.7
Amortization of unrecognized pension loss (gain)		3.8		(0.4)	0.0		40.9
Pension settlement charge		85.8		0.6	0.0		0.0
Pension settlement payments		(190.5)		0.0	(105.9)		0.0
Income tax benefit from stock-based awards		10.3					4.9
Equity-based compensation expense		11.7		45.1	68.0		10.8
Restructuring charges		0.1	[1]	34.8	51.8	[1]	25.4
Restructuring payments		(2.1)		(17.0)	(39.1)		(33.8)
Change in fair value of make-whole derivative liability		0.0		32.8	172.4		0.0
Changes in deferred income taxes		(33.2)		(99.5)	(137.6)		46.2
Changes in prepaid and accrued income taxes		(8.1)		(131.7)	(10.0)		(24.8)
Changes in operating assets and liabilities:
(Increase) decrease in accounts receivable		16.3		(42.3)	(15.2)		9.5
(Increase) decrease in other current assets		(1.2)		(30.2)	5.9		0.3
Increase (decrease) in deferred revenue		20.8		4.1	66.1		(15.1)
Increase (decrease) in accounts payable		37.8		5.0	(19.6)		(12.6)
Increase (decrease) in accrued liabilities		(39.7)		29.0	(10.2)		(41.8)
Increase (decrease) in other accrued and current liabilities		25.1		(19.0)	43.9		0.4
(Increase) decrease in other long-term assets		(96.0)		(48.3)	(38.3)		(13.5)
Increase (decrease) in long-term liabilities		154.6		(40.8)	(57.0)		(55.8)
Non-cash foreign exchange impacts		0.0		(5.6)	15.1		2.1
Net, other non-cash adjustments	[2]	2.8		48.6	17.8		(0.7)
Net cash provided by (used in) operating activities		(65.4)		195.6	(63.0)		325.4
Cash flows provided by (used in) investing activities:
Payments for acquisitions of businesses, net of cash acquired		0.0		(20.6)	(6,078.0)		0.0
Cash settlements of foreign currency contracts		0.0		7.1	(7.9)		(7.8)
Capital expenditures		(0.2)		(7.7)	(12.5)		(5.1)
Additions to computer software and other intangibles		(5.1)		(113.7)	(56.4)		(53.1)
Net, other		0.0		0.6	0.2		0.7
Net cash provided by (used in) investing activities		(5.3)		(134.3)	(6,154.6)		(65.3)
Cash flows provided by (used in) financing activities:
Net payments related to stock-based plans		0.0		0.0	0.0		(1.4)
Proceeds from issuance of Class A common stock in the IPO transaction and Private Placement, net	[3]	0.0		2,248.2	0.0		0.0
Proceeds from investors		0.0		0.0	3,176.8		0.0
Payment for the redemption of Cumulative Series A Preferred Stock		0.0		(1,067.9)	0.0		0.0
Payment for make-whole liability		0.0		(205.2)	0.0		0.0
Payment for debt early redemption premiums		0.0		(50.1)	0.0		0.0
Payments of dividends		0.0		(64.1)	(96.1)		(58.1)
Proceeds from issuance of Successor's Senior Notes		0.0		0.0	1,450.0		0.0
Retirement of Predecessor's Senior Notes		0.0		0.0	(625.1)		0.0
Payments of borrowings on Successor’s Senior Notes		0.0		(580.0)	0.0		0.0
Payment of debt issuance costs		0.0		(2.5)	(122.6)		(3.6)
Net, other		(0.1)		(7.1)	(3.6)		(3.5)
Net cash provided by (used in) financing activities		96.9		189.3	6,321.8		(609.7)
Effect of exchange rate changes on cash and cash equivalents		1.2		5.3	(5.6)		(2.6)
Increase (decrease) in cash and cash equivalents		27.4		255.9	98.6		(352.2)
Cash and Cash Equivalents, Beginning of Period		90.2		98.6	90.2
Cash and Cash Equivalents, End of Period		117.6		354.5	98.6		90.2
Cash Paid for:
Income Taxes, Net of Refunds		3.4		120.9	29.3		55.1
Interest		2.4		249.0	232.4		53.8
Predecessor Credit Facility
Cash flows provided by (used in) financing activities:
Proceeds from borrowings on lines of credit		167.0		407.2	228.3		1,095.1
Payments of borrowings on lines of credit		(70.0)		(407.2)	(228.3)		(1,578.2)
Predecessor Term Loan Facility
Cash flows provided by (used in) financing activities:
Proceeds from borrowings on lines of credit		0.0		0.0	0.0		300.0
Payments of borrowings on lines of credit		0.0		(19.0)	0.0		(360.0)
Successor Term Loan Facility
Cash flows provided by (used in) financing activities:
Proceeds from borrowings on lines of credit		0.0		0.0	2,479.4		0.0
Bridge Loan
Cash flows provided by (used in) financing activities:
Proceeds from borrowings on lines of credit					$ 63.0
Payments of borrowings on lines of credit		$ 0.0		$ (63.0)			0.0
Dun & Bradstreet Corp
Cash flows provided by (used in) financing activities:
Cash and Cash Equivalents, Beginning of Period							$ 442.4

[1] See Note 1 "Basis of Presentation" for further discussion.

[2] Includes non-cash adjustments for the write down of deferred debt issuance costs and discount of $23.2 million associated with the partial redemption of the Senior Unsecured Notes, Senior Secured Notes, and amendments of the revolver and the term loan during the year ended December 31, 2020. In addition, non cash amortization of deferred debt issuance cost and discount is $21.8 million and $23.2 million for the year ended December 31, 2020 and the period from January 1 to December 31, 2019, respectively.

[3] Net of IPO offering costs of $132.8 million of which $131.9 million was paid by proceeds raised from the offering (see Note 2) and $0.9 million was paid prior to the IPO and Private Placement.