Black Knight (BKI) 10-Q 9 May 22 2022 Q1 Quarterly report Financial data

Cover Page

Cover Page - shares	3 Months Ended
	Mar. 31, 2022	May 06, 2022
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2022
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-37394
Entity Registrant Name	Black Knight, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	81-5265638
Entity Address, Address Line One	601 Riverside Avenue
Entity Address, City or Town	Jacksoville
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	32204
City Area Code	904
Local Phone Number	854-5100
Title of 12(b) Security	Common Stock, $0.0001 par value
Trading Symbol	BKI
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		155,965,894
Amendment Flag	false
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q1
Entity Central Index Key	0001627014

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 27.6	$ 77.1
Trade receivables, net	194.3	191.8
Prepaid expenses and other current assets	85.1	83
Receivables from related parties	0.1	0.2
Total current assets	307.1	352.1
Property and equipment, net	151.1	154.5
Software, net	482.3	497
Other intangible assets, net	576.4	613.2
Goodwill	3,817.3	3,817.3
Investments in unconsolidated affiliates	170	490.5
Deferred contract costs, net	199	196
Other non-current assets	239.8	230.3
Total assets	5,943	6,350.9
Current liabilities:
Trade accounts payable and other accrued liabilities	55.4	64.5
Income taxes payable	139.9	11.8
Accrued compensation and benefits	69	91.4
Current portion of debt	33.5	32.5
Deferred revenues	68.1	64.6
Total current liabilities	365.9	264.8
Deferred revenues	74.2	81.5
Deferred income taxes	251.2	284.1
Long-term debt, net of current portion	2,697.2	2,362.6
Other non-current liabilities	63.3	78.7
Total liabilities	3,451.8	3,071.7
Commitments and contingencies (Note 10)
Redeemable noncontrolling interests	40.2	1,188.8
Equity:
Common stock; $0.0001 par value; 550,000,000 shares authorized; 160,040,598 shares issued and 155,965,390 shares outstanding as of March 31, 2022, and 160,040,598 shares issued and 155,357,705 shares outstanding as of December 31, 2021	0	0
Preferred stock; $0.0001 par value; 25,000,000 shares authorized; issued and outstanding, none as of March 31, 2022 and December 31, 2021	0	0
Additional paid-in capital	1,364.8	1,410.9
Retained earnings	1,327.4	968.2
Accumulated other comprehensive loss	(7)	(17.5)
Treasury stock, at cost, 4,075,208 shares as of March 31, 2022 and 4,682,893 shares as of December 31, 2021	(234.2)	(271.2)
Total shareholders' equity	2,451	2,090.4
Total liabilities, redeemable noncontrolling interests and shareholders' equity	$ 5,943	$ 6,350.9

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (in shares)	550,000,000	550,000,000
Common stock, shares issued (in shares)	160,040,598	160,040,598
Common stock, shares outstanding (in shares)	155,965,390	155,357,705
Preferred stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Preferred stock, shares authorized (in shares)	25,000,000	25,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in share)	0	0
Treasury stock (in shares)	4,075,208	4,682,893

Condensed Consolidated Statemen

Condensed Consolidated Statements of Earnings and Comprehensive Earnings - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Revenues	$ 387.2	$ 349.7
Expenses:
Operating expenses	207.9	186.2
Depreciation and amortization	91.5	87.8
Transition and integration costs	7.6	7.9
Total expenses	307	281.9
Operating income	80.2	67.8
Other income and expense:
Interest expense, net	(21.1)	(20.3)
Other expense, net	(1.2)	(3.2)
Total other expense, net	(22.3)	(23.5)
Earnings before income taxes and equity in earnings of unconsolidated affiliates	57.9	44.3
Income tax expense	(1.1)	5.2
Earnings before equity in earnings of unconsolidated affiliates	59	39.1
Equity in earnings of unconsolidated affiliates, net of tax	303.1	6.4
Net earnings	362.1	45.5
Net losses attributable to redeemable noncontrolling interests	2.5	8.6
Net earnings attributable to Black Knight	364.6	54.1
Other comprehensive earnings (loss):
Unrealized holding gains, net of tax(1)	4.3	0.5
Reclassification adjustments for losses included in net earnings, net of tax(2)	3.2	3.9
Total unrealized gains (losses) on interest rate swaps, net of tax	7.5	4.4
Foreign currency translation adjustment, net of tax (3)	(0.2)	(0.3)
Unrealized gains (losses) on investments in unconsolidated affiliates, net of tax(4)	3.2	(3.1)
Other comprehensive earnings (loss)	10.5	1
Comprehensive earnings	372.6	46.5
Net losses attributable to redeemable noncontrolling interests	2.5	8.6
Comprehensive earnings attributable to Black Knight	$ 375.1	$ 55.1
Net earnings per share attributable to Black Knight common shareholders:
Basic	$ 2.36	$ 0.35
Diluted	$ 2.35	$ 0.35
Weighted average shares of common stock outstanding (see Note 5):
Basic	154.2	155.6
Diluted	155.4	155.9

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Earnings and Comprehensive Earnings (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Derivatives qualifying as hedges, tax expense (benefit)	$ 1.4	$ 0.2
Reclassification adjustment from AOCI on derivatives, tax expense (benefit)	1.1	1.3
Foreign currency translation adjustment, tax	0.1	0.1
Unrealized gains (losses) on investments in unconsolidated affiliates, tax	$ (1.1)	$ 1

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Equity - USD ($) shares in Millions, $ in Millions	Common stock	Additional paid-in capital	Retained earnings	Accumulated other comprehensive loss	Treasury stock	Redeemable noncontrolling interests	Total
Beginning balance at Dec. 31, 2020		$ 2,053.7	$ 757.4	$ (38.8)	$ (144.6)	$ 578	$ 2,627.7
Beginning balance (shares) at Dec. 31, 2020	160.1				3.1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Fair value adjustment to redeemable noncontrolling interests		(8.6)				8.6	(8.6)
Grant of restricted shares of common stock		(25.3)			$ 25.3
Grant of restricted shares of common stock (in shares)					(0.5)
Forfeitures of restricted shares of common stock		0.1			$ (0.1)
Tax withholding payments for restricted share vesting		(22.7)					(22.7)
Tax withholding payments for restricted share vesting (shares)	(0.1)
Vesting of restricted shares granted from treasury stock		10.4			$ (10.4)
Vesting of restricted shares granted from treasury stock (in shares)					0.2
Equity based compensation expense		9.4					9.4
Net earnings (losses)			54.1			(8.6)	54.1
Equity-based compensation expense of unconsolidated affiliates			0.5				0.5
Purchases of treasury stock					$ (46.7)		$ (46.7)
Purchases of treasury stock (in shares)					(0.6)		(0.6)
Foreign currency translation adjustment				(0.3)			$ (0.3)
Unrealized gains on interest rate swaps, net				4.4			4.4
Other comprehensive gains (loss) on investments in unconsolidated affiliates				(3.1)			(3.1)
Ending balance at Mar. 31, 2021		2,017	812	(37.8)	$ (176.5)	578	2,614.7
Ending balance (shares) at Mar. 31, 2021	160				3.4
Beginning balance at Dec. 31, 2020		2,053.7	757.4	(38.8)	$ (144.6)	578	2,627.7
Beginning balance (shares) at Dec. 31, 2020	160.1				3.1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Purchases of treasury stock					$ (271.2)
Ending balance at Dec. 31, 2021		1,410.9	968.2	(17.5)		1,188.8	2,090.4
Ending balance (shares) at Dec. 31, 2021	160				4.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Fair value adjustment to redeemable noncontrolling interests		(9.9)				9.9	(9.9)
Acquisition of remaining redeemable noncontroling interests in Optimal Blue Holdco, LLC						(1,156)
Grant of restricted shares of common stock		(46.6)			$ 46.6
Grant of restricted shares of common stock (in shares)					(0.8)
Forfeitures of restricted shares of common stock		1			$ (1)
Tax withholding payments for restricted share vesting		(10.7)					(10.7)
Vesting of restricted shares granted from treasury stock		8.6			$ (8.6)
Vesting of restricted shares granted from treasury stock (in shares)					0.2
Equity based compensation expense		$ 10.7					10.7
Net earnings (losses)			364.6			(2.5)	364.6
Equity-based compensation expense of unconsolidated affiliates			(5.4)				(5.4)
Foreign currency translation adjustment				(0.2)			(0.2)
Unrealized gains on interest rate swaps, net				7.5			7.5
Other comprehensive gains (loss) on investments in unconsolidated affiliates				3.2			$ 3.2
Other		0.8					0.8
Ending balance at Mar. 31, 2022		$ 1,364.8	$ 1,327.4	$ (7)	$ (234.2)	$ 40.2	$ 2,451
Ending balance (shares) at Mar. 31, 2022	160				4.1

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities:
Net earnings	$ 362.1	$ 45.5
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	91.5	87.8
Amortization of debt issuance costs and original issue discount	0.9	1
Loss on extinguishment of debt	0	2.5
Deferred income taxes, net	(135.8)	(1.8)
Equity in earnings of unconsolidated affiliates, net of tax	(303.1)	(6.4)
Equity-based compensation	10.7	9.4
Changes in assets and liabilities, net of acquired assets and liabilities:
Trade receivables, including receivables from related parties	(2.5)	0.1
Prepaid expenses and other assets	(11.9)	(35.1)
Deferred contract costs	(12.3)	(11)
Deferred revenues	(3.8)	6.4
Trade accounts payable and other liabilities	89.3	(21)
Net cash provided by operating activities	85.1	77.4
Cash flows from investing activities:
Additions to property and equipment	(6.6)	(5.2)
Additions to software	(20.8)	(24.7)
Business acquisitions, net of cash acquired	0	(20)
Asset acquisitions	0	(10)
Net cash used in investing activities	(27.4)	(59.9)
Cash flows from financing activities:
Revolver borrowings	460.1	167.8
Revolver payments	(115.1)	(98.5)
Term loan borrowings	0	1.6
Term loan payments	(7.2)
Payments made for redeemable noncontrolling interests	(433.5)
Purchases of treasury stock	0	(46.7)
Tax withholding payments for restricted share vesting	(10.7)	(22.7)
Finance lease payments	(0.8)	(1.2)
Debt issuance costs paid	0	(7.6)
Net cash used in financing activities	(107.2)	(7.3)
Net (decrease) increase in cash and cash equivalents	(49.5)	10.2
Cash and cash equivalents, beginning of period	77.1	34.7
Cash and cash equivalents, end of period	$ 27.6	$ 44.9

Condensed Consolidated Statem_5

Condensed Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Supplemental cash flow information:
Interest paid, net	$ (29.3)	$ (29.1)
Income taxes paid, net	$ (0.3)	$ (0.9)

Basis of Presentation and Overv

Basis of Presentation and Overview	3 Months Ended
	Mar. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation and Overview	(1) Basis of Presentation and Overview The accompanying Condensed Consolidated Financial Statements (Unaudited) of Black Knight, Inc. (“BKI”) and its subsidiaries (" Black Knight," the "Company," "we," "us" or "our" The preparation of these Condensed Consolidated Financial Statements (Unaudited) in conformity with GAAP requires management to make estimates and assumptions. These estimates and assumptions affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the Condensed Consolidated Financial Statements (Unaudited), as well as the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from those estimates. This Quarterly Report on Form 10-Q should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2021 filed with the Securities and Exchange Commission ("SEC") on February 25, 2022 and other filings with the SEC. Description of Business We are a premier provider of integrated, innovative, mission-critical, high-performance software solutions, data and analytics to the U.S. mortgage and real estate markets. Our mission is to transform the markets we serve by delivering innovative solutions that are integrated across the homeownership lifecycle and that result in realized efficiencies, reduced risk and new opportunities for our clients to help them achieve greater levels of success. Principles of Consolidation The Condensed Consolidated Financial Statements (Unaudited) include the accounts of BKI, its wholly-owned subsidiaries and non-wholly owned subsidiaries in which we have a controlling financial interest either through voting rights or means other than voting rights. Intercompany transactions and balances have been eliminated in consolidation. Where our ownership interest in a consolidated subsidiary is less than 100%, the noncontrolling interests’ share of these non-wholly owned subsidiaries is reported in our Condensed Consolidated Balance Sheets (Unaudited) as a separate component of equity or within temporary equity. The noncontrolling interests’ share of the net earnings (loss) of these non-wholly owned subsidiaries is reported in our Condensed Consolidated Statements of Earnings and Comprehensive Earnings (Unaudited) as an adjustment to our net earnings to arrive at Net earnings attributable to Black Knight. Redeemable Noncontrolling Interests Prior to February 15, 2022, Optimal Blue Holdco, LLC (“Optimal Blue Holdco”) was a non-wholly owned subsidiary and considered a variable interest entity. We were the primary beneficiary of Optimal Blue Holdco through our controlling interest and our rights established in the Second Amended and Restated Limited Liability Company Agreement of Optimal Blue Holdco dated November 24, 2020 (the “OB Holdco LLC Agreement”). As such, we controlled Optimal Blue Holdco and its subsidiaries, and we consolidated its financial position and results of operations. Prior to February 15, 2022, we owned 60% of Optimal Blue Holdco. Redeemable noncontrolling interests represented the collective 40% equity interest in Optimal Blue Holdco owned by Cannae Holdings, LLC ("Cannae") and affiliates of Thomas H. Lee Partners, L.P. ("THL"). As these redeemable noncontrolling interests provided for redemption features not solely within our control, they were presented outside of shareholders' equity. On February 15, 2022, we entered into a purchase agreement with Cannae and THL and acquired all of their issued and outstanding Class A units of Optimal Blue Holdco through Optimal Blue I, LLC (“Optimal Blue I”), a Delaware limited liability company and our wholly-owned subsidiary, in exchange for aggregate consideration of 36.4 million shares of Dun & Bradstreet Holdings, Inc. (“DNB”) common stock valued at $722.5 million and $433.5 million in cash, included as a financing cash outflow on the Condensed Consolidated Statements of Cash Flows (Unaudited), funded with borrowings under our revolving credit facility. The aggregate consideration of $1.156 billion and number of shares of DNB common stock paid to Cannae and THL was based on the 20-day volume-weighted average trading price of DNB for the period ended on February 14, 2022. Reporting Segments We conduct our operations through two reporting segments: (1) Software Solutions and (2) Data and Analytics. See further discussion in Note 13 — Segment Information Reclassifications Certain reclassifications have been made to the prior year amounts to conform to the classifications used in 2022. Certain receivables previously included in Trade and other receivables, including receivables from related parties on our Condensed Consolidated Statements of Cash Flows (Unaudited) are now included in Prepaid expenses and other assets. We also reclassified certain deferred compensation plan assets and liabilities between Prepaid expenses and other assets and Trade accounts payable and other liabilities on our Condensed Consolidated Statements of Cash Flows (Unaudited). ​ Merger Agreement On May 4, 2022, we entered into a definitive agreement to be acquired by Intercontinental Exchange, Inc. (“ICE”), a leading global provider of data, technology, and market infrastructure, in a transaction valued at approximately $13.1 billion, or $85 per share, with consideration in the form of a mix of cash (80%) and stock (20%) (the “Transaction”). The aggregate cash consideration in the Transaction consists of approximately $10.5 billion and the aggregate stock consideration is valued at approximately $2.6 billion based on ICE’s 10-day volume weighted average price as of May 2, 2022 of $118.09. Black Knight shareholders can elect to receive either cash or stock, subject to proration, with the value of the cash election and the stock election equalized at closing. The Transaction is expected to close in the first half of 2023, following the receipt of regulatory approvals, Black Knight shareholder approval and the satisfaction of customary closing conditions. The Transaction has been approved by the Boards of Directors of Black Knight and ICE. ​

Condensed Consolidated Financia

Condensed Consolidated Financial Statement Details	3 Months Ended
	Mar. 31, 2022
Condensed Consolidated Financial Statement Details
Condensed Consolidated Financial Statement Details	(2) Cash and Cash Equivalents Cash and cash equivalents are unrestricted and include the following (in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2022 December 31, 2021 Cash ​ $ 21.1 ​ $ 24.0 Cash equivalents ​ 6.5 ​ 53.1 Cash and cash equivalents ​ $ 27.6 ​ $ 77.1 ​ Trade Receivables, Net A summary of Trade receivables, net of allowance for credit losses is as follows (in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2022 December 31, 2021 Trade receivables — billed ​ $ 149.4 ​ $ 147.4 Trade receivables — unbilled ​ 47.8 ​ 47.1 Trade receivables ​ 197.2 ​ 194.5 Allowance for credit losses ​ (2.9) ​ (2.7) Trade receivables, net ​ $ 194.3 ​ $ 191.8 ​ Prepaid Expenses and Other Current Assets Prepaid expenses and other current assets consist of the following (in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2022 December 31, 2021 Prepaid expenses ​ $ 52.4 ​ $ 44.7 Contract assets, net ​ 21.6 ​ 23.0 Income tax receivables ​ ​ 0.9 ​ ​ 6.5 Other current assets ​ 10.2 ​ 8.8 Prepaid expenses and other current assets ​ $ 85.1 ​ $ 83.0 ​ Other Non-Current Assets Other non-current assets consist of the following (in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2022 December 31, 2021 Contract assets, net ​ $ 90.3 ​ $ 80.2 Property records database ​ ​ 60.6 ​ ​ 60.6 Right-of-use assets ​ 30.7 ​ 32.9 Deferred compensation plan related assets ​ 26.5 ​ 25.2 Contract credits ​ 23.1 ​ 23.6 Prepaid expenses ​ 6.2 ​ 4.5 Other ​ 2.4 ​ 3.3 Other non-current assets ​ $ 239.8 ​ $ 230.3 ​ Trade Accounts Payable and Other Accrued Liabilities Trade accounts payable and other accrued liabilities consist of the following (in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2022 December 31, 2021 Accrued interest ​ $ 3.1 ​ $ 12.3 Lease liabilities, current ​ ​ 10.3 ​ ​ 10.8 Trade accounts payable ​ 10.1 ​ 7.9 Other taxes payable and accrued ​ 5.7 ​ 4.8 Accrued client liabilities ​ ​ 3.7 ​ ​ 3.8 Other ​ 22.5 ​ 24.9 Trade accounts payable and accrued liabilities ​ $ 55.4 ​ $ 64.5 ​ Deferred Revenues During the three months ended March 31, 2022 and 2021, revenues recognized related to the amount included in the Deferred revenues balance at the beginning of each year were $20.9 million and $17.7 million, respectively. Depreciation and Amortization Depreciation and amortization includes the following (in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, ​ 2022 2021 Other intangible assets ​ $ 36.8 ​ $ 38.8 Software ​ ​ 35.5 ​ ​ 30.6 Property and equipment ​ 9.9 ​ 10.2 Deferred contract costs ​ 9.3 ​ 8.2 Total ​ $ 91.5 ​ $ 87.8 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other Non-Current Liabilities Other non-current liabilities consist of the following (in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2022 December 31, 2021 Lease liabilities, non-current ​ $ 22.9 ​ $ 26.4 Deferred compensation plan ​ ​ 24.8 ​ ​ 24.4 Unrealized losses on interest rate swaps (Note 7) ​ ​ 2.1 ​ ​ 13.9 Other ​ ​ 13.5 ​ ​ 14.0 Other non-current liabilities ​ $ 63.3 ​ $ 78.7 ​ A

Business Acquisitions

Business Acquisitions	3 Months Ended
	Mar. 31, 2022
Business Combinations [Abstract]
Business Acquisitions	(3) 2021 Acquisitions On March 16, 2021, we completed the acquisition of the technology assets and business of NexSpring Financial, LLC (“NexSpring”), which is reported within our Software Solutions segment, and is expected to broaden our ability to serve mortgage brokers. On May 17, 2021, we completed the acquisition of 100% of the equity interests in eMBS, Inc. (“eMBS”), a leading data and analytics aggregator for residential mortgage-backed securities, which is reported within our Data & Analytics segment, and is expected to solidify and further expand our market leadership in solutions and data for agency-backed securities. On July 7, 2021, we completed the acquisition of 100% of the equity interests in TOMN Holdings, Inc. and its subsidiaries (“Top of Mind”), which is reported within our Software Solutions segment. Top of Mind is the developer of Surefire SM We did not record any measurement period adjustments related to our prior year acquisitions during the three months ended March 31, 2022. The estimates related to our 2021 acquisitions of eMBS and Top of Mind are preliminary and subject to adjustments as we complete our valuation process with respect to certain assumed liabilities, including estimated liabilities for pre-acquisition tax exposure.

Investments in Unconsolidated A

Investments in Unconsolidated Affiliates	3 Months Ended
	Mar. 31, 2022
Equity Method Investments and Joint Ventures [Abstract]
Investments in Unconsolidated Affiliates	(4) Investments in Unconsolidated Affiliates DNB is a leading global provider of business decisioning data and analytics. On January 8, 2021, DNB completed its acquisition of Bisnode Business Information Group AB (the “Bisnode acquisition”). In connection with the Bisnode acquisition, DNB issued 6.2 million shares of common stock, which resulted in a decrease in our ownership interest in DNB from 13.0% to 12.8% at that time. On February 15, 2022, we exchanged 36.4 million shares of DNB common stock in connection for a portion of the remaining Class A units in Optimal Blue Holdco we acquired from Cannae and THL. The number of shares of DNB common stock was valued at $722.5 million based on the 20-day volume-weighted average trading price of DNB for the period ended on February 14, 2022. We recognized a gain of $305.4 million, net of tax of $102.6 million, related to this transaction. We hold less than 20% of the outstanding common equity of DNB, but we continue to account for our investment under the equity method because we continue to have significant influence over DNB primarily through a combination of an agreement with certain other DNB investors pursuant to which we agreed to collectively vote together on matters related to the election of DNB directors for a period of three years following the initial public offering of DNB, our shared Chief Executive Officer and our investment. As of March 31, 2022, DNB’s closing share price was $17.52, and the fair value of our investment in DNB was $323.7 million before tax. Summarized consolidated financial information for DNB is presented below (in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2022 December 31, 2021 Current assets ​ $ 732.3 ​ $ 718.0 Non-current assets ​ 9,124.9 ​ 9,279.2 Total assets ​ $ 9,857.2 ​ $ 9,997.2 ​ ​ ​ ​ ​ ​ ​ Current liabilities, including short-term debt ​ $ 973.4 ​ $ 1,004.9 Non-current liabilities ​ 5,174.9 ​ 5,247.0 Total liabilities ​ 6,148.3 ​ 6,251.9 Total equity ​ 3,708.9 ​ 3,745.3 Total liabilities and shareholders' equity ​ $ 9,857.2 ​ $ 9,997.2 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, ​ ​ 2022 ​ 2021 ​ ​ ​ ​ ​ ​ ​ Revenues ​ $ 536.0 ​ $ 504.5 Loss before provision for income taxes and equity in net income of affiliates ​ (39.8) ​ (33.7) Net loss ​ (29.8) ​ (23.3) Net loss attributable to DNB ​ (31.3) ​ (25.0) ​ Equity in earnings of unconsolidated affiliates, net of tax consists of the following (in millions): ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, ​ 2022 2021 Equity in losses of unconsolidated affiliates, net of tax $ (2.3) ​ $ (3.5) Non-cash gain related to DNB's issuance of common stock, net of tax — ​ 9.9 Gain related to DNB investment, net of tax ​ 305.4 ​ ​ — Equity in earnings of unconsolidated affiliates, net of tax $ 303.1 ​ $ 6.4 ​

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2022
Earnings Per Share [Abstract]
Earnings Per Share	(5) Diluted net earnings per share includes the effect of unvested restricted stock awards, restricted stock unit awards (“RSUs”) and Optimal Blue Holdco profits interests units (“OB PIUs”). For the three months ended March 31, 2021, the OB PIUs were excluded from the diluted earnings per share calculation because the effect of their inclusion would have been antidilutive. The following table sets forth the computation of basic and diluted net earnings per share (in millions, except per share amounts): ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, ​ ​ 2022 2021 Basic: ​ ​ Net earnings attributable to Black Knight ​ $ 364.6 ​ $ 54.1 Shares used for basic net earnings per share: ​ ​ Weighted average shares of common stock outstanding ​ 154.2 ​ 155.6 Basic net earnings per share ​ $ 2.36 ​ $ 0.35 ​ ​ ​ ​ ​ ​ ​ Diluted: ​ ​ Net earnings attributable to Black Knight ​ $ 364.6 ​ $ 54.1 Shares used for diluted net earnings per share: ​ ​ Weighted average shares of common stock outstanding ​ 154.2 ​ 155.6 Dilutive effect of unvested restricted shares of common stock and OB PIUs ​ 1.2 ​ 0.3 Weighted average shares of common stock, diluted ​ 155.4 ​ 155.9 Diluted net earnings per share ​ $ 2.35 ​ $ 0.35 ​

Related Party Transactions

Related Party Transactions	3 Months Ended
	Mar. 31, 2022
Related Party Transactions [Abstract]
Related Party Transactions	(6) Our service arrangements with related parties are priced within the range of prices we offer to third parties. We believe the amounts earned from or charged by us under each of the following arrangements are fair and reasonable. However, the amounts we earned or that were charged under these arrangements were not negotiated at arm's length and may not represent the terms that we might have obtained from an unrelated third party. DNB DNB is considered to be a related party primarily due to the combination of our investment in DNB and our shared Chief Executive Officer. Refer to Note 4 — Investments in Unconsolidated Affiliates In June 2021, we entered into a five-year agreement with DNB to provide them with certain products and data over the term of the agreement, as well as professional services, for an aggregate fee of approximately $34 million over the term of the agreement. As of March 31, 2022, related party deferred revenues of $6.6 million are included in Deferred revenues (current) in our Condensed Consolidated Balance Sheets (Unaudited). As of December 31, 2021, related party deferred revenues were $7.6 million, of which $6.2 million was included in Deferred revenues (current) and $1.4 million was included in Deferred revenues (non-current). During the three months ended March 31, 2022, revenues from related parties of $1.0 million are included in our Condensed Consolidated Statements of Earnings and Comprehensive Earnings (Unaudited). In June 2021, we also entered into an agreement with DNB for access to certain of their data assets for an aggregate fee of approximately $24 million over the term of the agreement. In addition, we will jointly market certain solutions and data. As of March 31, 2022 and December 31, 2021, related party prepaid fees were $1.1 million and $2.3 million, respectively, which are included in Prepaid expenses and other current assets on the Condensed Consolidated Balance Sheets (Unaudited). During the three months ended March 31, 2022, expenses from related parties of $1.1 million are included in Operating expenses in our Condensed Consolidated Statements of Earnings and Comprehensive Earnings (Unaudited). As of March 31, 2022 and December 31, 2021, we had related party receivables from DNB of $0.1 million and $0.2 million, respectively. Trasimene Prior to June 16, 2021, Trasimene Capital Management, LLC ("Trasimene") was considered a related party because the former Chairman of our Board of Directors (the “Board”) owns a controlling interest in Trasimene. As of June 16, 2021, our former Chairman retired from the Board and became our Chairman Emeritus, and Trasimene is no longer considered a related party. For the three months ended March 31, 2021, we recognized $0.3 million in fees paid to Trasimene related to our acquisition of NexSpring, which are included in Transition and integration costs in our Condensed Consolidated Statements of Earnings and Comprehensive Earnings (Unaudited).

Long-Term Debt

Long-Term Debt	3 Months Ended
	Mar. 31, 2022
Debt Disclosure [Abstract]
Long-Term Debt	(7) Long-Term Debt Long-term debt consists of the following (in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2022 December 31, 2021 Term A Loan ​ $ 1,142.8 ​ $ 1,150.0 Revolving Credit Facility ​ 601.0 ​ 256.0 Senior Notes ​ 1,000.0 ​ 1,000.0 Other ​ 5.8 ​ 8.9 Total long-term debt principal ​ 2,749.6 ​ 2,414.9 Less: current portion of long-term debt ​ (33.5) ​ (32.5) Long-term debt before debt issuance costs and discount ​ 2,716.1 ​ 2,382.4 Less: debt issuance costs and discount ​ (18.9) ​ (19.8) Long-term debt, net of current portion ​ $ 2,697.2 ​ $ 2,362.6 ​ As of March 31, 2022, principal maturities, including payments related to our finance leases, are as follows (in millions): ​ ​ ​ ​ ​ 2022 $ 22.4 2023 ​ ​ 33.7 2024 ​ 57.5 2025 ​ 57.5 2026 ​ 1,578.5 Thereafter ​ 1,000.0 Total ​ $ 2,749.6 ​ 2021 Credit Agreement On March 10, 2021, our indirect subsidiary Black Knight Infoserv, LLC (“BKIS”) entered into a second amended and restated credit and guaranty agreement (the “2021 Credit Agreement”) with JPMorgan Chase Bank, N.A., as administrative agent, the guarantors party thereto, the other agents party thereto and the lenders party thereto The 2021 Credit Agreement provides for (i) a $1,150.0 million term loan A facility (the “Term A Loan”) and (ii) a $1,000.0 million revolving credit facility (the “Revolving Credit Facility” and, together with the Term A Loan, collectively, the “Facilities”), the proceeds of which were used to repay in full the indebtedness outstanding under the previous term A facility and revolving credit facility. As a result of the refinancing, we recognized $2.5 million of expense during the three months ended March 31, 2021 in Other expense, net on the Condensed Consolidated Statement of Earnings and Comprehensive Earnings (Unaudited). As of March 31, 2022, the interest rate for the Facilities was based on the Eurodollar rate plus a margin of 150 basis points and was approximately 1.9%. As of March 31, 2022, we had $399.0 million capacity on the Revolving Credit Facility, and the unused commitment fee was 20 basis points. The Facilities are guaranteed by BKIS’s wholly-owned domestic restricted subsidiaries, as defined by the 2021 Credit Agreement, and Black Knight Financial Services, LLC, and are secured by associated collateral agreements that pledge a lien on the majority of BKIS’s assets and the assets of the guarantors, in each case, subject to customary exceptions. Senior Notes On August 26, 2020, BKIS completed the issuance and sale of $1.0 billion aggregate principal amount of 3.625% senior unsecured notes due 2028 (the "Senior Notes"). The Senior Notes have a coupon rate of 3.625% and mature on September 1, 2028. Interest is paid semi-annually in arrears on September 1 and March 1 of each year, and commenced on March 1, 2021. The obligations under the Senior Notes are fully and unconditionally guaranteed, jointly and severally, on an unsecured basis by the same guarantors that guarantee the 2021 Credit Agreement (collectively, the “Guarantors”). The Senior Notes are effectively subordinated to any obligations that are secured, including obligations under the 2021 Credit Agreement, to the extent of the value of the assets securing those obligations. The Senior Notes are structurally subordinated to all liabilities of BKIS’ subsidiaries that do not guarantee the Senior Notes. Other Debt Other debt includes financing agreements primarily related to certain data processing and maintenance services and finance lease agreements for certain computer equipment. For the three months ended March 31, 2021, non-cash investing and financing activity was $3.3 million related to the unpaid portion of our finance lease agreements. Fair Value of Long-Term Debt The fair values of our Facilities and Senior Notes are based upon established market prices for the securities using Level 2 inputs. The fair value of our Facilities approximates their carrying value at March 31, 2022. The fair value of our Senior Notes at March 31, 2022 was $950.0 million compared to its carrying value of $990.0 million, net of original issue discount and debt issuance costs. Interest Rate Swaps We enter into interest rate swap agreements to hedge forecasted monthly interest rate payments on our floating rate debt. As of March 31, 2022, we had the following interest rate swap agreements (collectively, the "Swap Agreements") (in millions): ​ ​ ​ ​ ​ ​ ​ ​ Effective dates Notional amount Fixed rates April 30, 2018 through April 30, 2023 ​ $ 250.0 2.61 % January 31, 2019 through January 31, 2023 ​ $ 300.0 2.65 % ​ Under the terms of the Swap Agreements, we receive payments based on the 1-month LIBOR (approximately 0.46% as of March 31, 2022). During the three months ended March 31, 2022, the following interest rate swap agreement expired (in millions): ​ ​ ​ ​ ​ ​ ​ ​ Effective dates Notional amount Fixed rate March 31, 2017 through March 31, 2022 ​ $ 200.0 2.08 % ​ We entered into the Swap Agreements to convert a portion of the interest rate exposure on our floating rate debt from variable to fixed. We designated these Swap Agreements as cash flow hedges. A portion of the amount included in Accumulated other comprehensive loss is reclassified into Interest expense, net as a yield adjustment as interest is either paid or received on the hedged debt. The fair value of our Swap Agreements is based upon Level 2 inputs. We have considered our own credit risk and the credit risk of the counterparties when determining the fair value of our Swap Agreements. It is our policy to execute such instruments with creditworthy banks and not to enter into derivative financial instruments for speculative purposes. We believe our interest rate swap counterparties will be able to fulfill their obligations under our agreements, and we believe we will have debt outstanding through the various expiration dates of the swaps such that the occurrence of future cash flow hedges remains probable. The estimated fair values of our Swap Agreements are as follows (in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2022 December 31, 2021 Other current liabilities ​ $ 2.7 ​ $ 1.0 Other non-current liabilities ​ $ 2.1 ​ $ 13.9 ​ A cumulative loss of $4.8 million ($3.6 million net of tax) and $14.9 million ($11.1 million net of tax) is reflected in Accumulated other comprehensive loss on our Condensed Consolidated Balance Sheets (Unaudited) as of March 31, 2022 and December 31, 2021, respectively. Below is a summary of the effect of derivative instruments on amounts recognized in Other comprehensive earnings (loss) ("OCE") on the Condensed Consolidated Statements of Earnings and Comprehensive Earnings (Unaudited) (in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, ​ ​ 2022 ​ 2021 ​ ​ ​ Amount of loss ​ ​ Amount of loss ​ ​ Amount of gain ​ reclassified from ​ Amount of gain ​ reclassified from ​ ​ recognized ​ Accumulated OCE ​ recognized ​ Accumulated OCE ​ ​ in OCE ​ into Net earnings ​ in OCE ​ into Net earnings Swap agreements ​ $ 4.3 ​ $ 3.2 ​ $ 0.5 ​ $ 3.9 ​ Approximately $4.9 million ($3.6 million net of tax) of the balance in Accumulated other comprehensive loss as of March 31, 2022 is expected to be reclassified into Interest expense, net over the next 12 months.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2022
Fair Value Disclosures [Abstract]
Fair Value Measurements	(8) Fair Value of Financial Assets and Liabilities Fair value represents the amount that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The fair values of financial assets and liabilities are determined using the following fair value hierarchy: ● Level 1 inputs to the valuation methodology are unadjusted quoted prices for identical assets or liabilities in active markets that we have the ability to access. ● Level 2 inputs to the valuation methodology include: o quoted prices for similar assets or liabilities in active markets; o quoted prices for identical or similar assets or liabilities in inactive markets; o inputs other than quoted prices that are observable for the asset or liability; and o inputs that are derived principally from or corroborated by observable market data by correlation or other means. ● Level 3 inputs to the valuation methodology are unobservable and significant to the fair value measurement. Assets are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. We believe our valuation methods are appropriate and consistent with other market participants. The use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different fair value measurement at the reporting date. The following table presents our fair value hierarchy for those assets and liabilities measured at fair value on a recurring basis (in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2022 December 31, 2021 ​ Carrying Fair value Carrying Fair value ​ ​ amount ​ Level 1 ​ Level 2 ​ Level 3 ​ amount ​ Level 1 ​ Level 2 ​ Level 3 Assets: ​ ​ ​ ​ ​ ​ ​ ​ Cash and cash equivalents (Note 2) ​ $ 27.6 ​ $ 27.6 ​ $ — ​ $ — ​ $ 77.1 ​ $ 77.1 ​ $ — ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Liabilities: ​ ​ ​ ​ ​ ​ ​ ​ Interest rate swaps (Note 7) ​ 4.8 ​ — ​ 4.8 ​ — ​ 14.9 ​ — ​ 14.9 ​ — Contingent consideration ​ 4.7 ​ — ​ — ​ 4.7 ​ 4.9 ​ — ​ — ​ 4.9 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Redeemable noncontrolling interests ​ 40.2 ​ — ​ — ​ 40.2 ​ 1,188.8 ​ — ​ — ​ 1,188.8 ​ The fair value of redeemable noncontrolling interests and contingent consideration was primarily determined based on significant estimates and assumptions, including Level 3 inputs. The estimates and assumptions include the projected timing and amount of future cash flows and discount rates reflecting the rate inherent in the future cash flows. Refer to Note 1 — Basis of Presentation and Overview The following table presents a summary of the change in fair value of our Level 3 fair value measurements (in millions): ​ ​ ​ ​ ​ Beginning balance, December 31, 2021 $ 1,193.7 Contingent consideration adjustments related to prior year acquisition (1) ​ ​ (0.2) Acquisition of remaining outstanding Class A redeemable noncontrolling interests in Optimal Blue Holdco (Note 1) ​ ​ (1,156.0) Fair value adjustment to redeemable noncontrolling interests in Optimal Blue Holdco ​ ​ 7.4 Ending balance, March 31, 2022 ​ $ 44.9 (1) The adjustments to contingent consideration for prior year acquisitions are included in Transition and integration costs in the Condensed Consolidated Statement of Earnings and Comprehensive Earnings (Unaudited).

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2022
Income Tax Disclosure [Abstract]
Income Taxes	(9) Our effective tax rate for the three months ended March 31, 2022 and 2021 was (1.9)% and 11.7%, respectively. Our effective tax rate for the three months ended March 31, 2022, includes the effect of a $14.1 million discrete income tax benefit related to the establishment of a deferred tax asset as a result of our reorganization of certain wholly-owned subsidiaries within the Optimal Blue partnership investment structure. Our effective tax rate for the three months ended March 31, 2021 differs from our statutory rate primarily due to the effect of excess tax benefits related to the vesting of restricted shares of our common stock.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	(10) Legal and Regulatory Matters In the ordinary course of business, we are involved in various pending and threatened litigation and regulatory matters related to our operations, some of which include claims for punitive or exemplary damages. Our ordinary course litigation may include class action lawsuits, which make allegations related to various aspects of our business. From time to time, we also receive requests for information from various state and federal regulatory authorities, some of which take the form of civil investigative demands or subpoenas. Some of these regulatory inquiries may result in the assessment of fines for violations of regulations or settlements with such authorities requiring a variety of remedies. We believe that none of these actions depart from customary litigation or regulatory inquiries incidental to our business. We review lawsuits and other legal and regulatory matters (collectively "legal proceedings") on an ongoing basis when making accrual and disclosure decisions. When assessing reasonably possible and probable outcomes, management bases its decision on its assessment of the ultimate outcome assuming all appeals have been exhausted. For legal proceedings where it has been determined that a loss is both probable and reasonably estimable, a liability based on known facts and which represents our best estimate has been recorded. Actual losses may materially differ from the amounts recorded, and the ultimate outcome of our pending cases is generally not yet determinable. While some of these matters could be material to our operating results or cash flows for any particular period if an unfavorable outcome results, at present, we do not believe the ultimate resolution of currently pending legal proceedings, either individually or in the aggregate, will have a material adverse effect on our financial condition. PennyMac Litigation On November 5, 2019, Black Knight Servicing Technologies, LLC (“BKST”), an indirect, wholly-owned subsidiary of Black Knight, filed a Complaint and Demand for Jury Trial (the “Black Knight Complaint”) against PennyMac Loan Services, LLC (“PennyMac”) in the Circuit Court for the Fourth Judicial Circuit in and for Duval County, Florida. The Black Knight Complaint includes causes of action for breach of contract and misappropriation of MSP ® ® ® Shortly after the filing of the Black Knight Complaint, on November 6, 2019, PennyMac filed an Antitrust Complaint (the “PennyMac Complaint”) against Black Knight in the United States District Court for the Central District of California. The PennyMac Complaint included causes of action for alleged monopolization and attempted monopolization under Section 2 of the Sherman Antitrust Act, violation of California’s Cartwright Act, violation of California’s Unfair Competition Law and common law unfair competition under California law. The PennyMac Complaint sought equitable remedies, damages and other monetary relief, including treble and punitive damages. Generally, PennyMac alleged that Black Knight relies on various anticompetitive, unfair and discriminatory practices to maintain and to enhance its dominance in the mortgage servicing platform market and in an attempt to monopolize the platform software applications market. Black Knight moved to dismiss the PennyMac Complaint or have the action transferred to Florida based upon a forum selection clause in the agreement with BKST. On February 13, 2020, the judge granted Black Knight's motion to transfer the case to Florida and denied as moot the motion to dismiss. On April 17, 2020, PennyMac filed a notice of dismissal of this action without prejudice and indicated that they intended to bring the claims raised in the dismissed PennyMac Complaint as defenses, third party claims and/or counterclaims in arbitration. On April 23, 2020, the court entered an order dismissing the action without prejudice and directing that the clerk close the case. On April 28, 2020, PennyMac submitted this matter to the American Arbitration Association ("AAA") for arbitration. On May 27, 2020, Black Knight filed its answering statement with the AAA. The arbitrator was confirmed by the AAA on July 21, 2020. The arbitrator set Black Knight's trade secret case for a 10-day final hearing beginning on January 9, 2023 and set PennyMac's antitrust case for a 10-day final hearing beginning on January 23, 2023. As these cases continue to evolve, it is not possible to reasonably estimate the probability that we will ultimately prevail on our lawsuit or be held liable for the violations alleged in the PennyMac Complaint, nor is it possible to reasonably estimate the ultimate gain or loss, if any, or range of gain or loss that could result from these cases. Indemnifications and Warranties We often agree to indemnify our clients against damages and costs resulting from claims of patent, copyright, trademark infringement or breaches of confidentiality associated with use of our software through software licensing agreements. Historically, we have not made any payments under such indemnifications, but continue to monitor the conditions that are subject to the indemnifications to identify whether a loss has occurred that is both probable and estimable that would require recognition. In addition, we warrant to clients that our software operates substantially in accordance with the software specifications. Historically, no costs have been incurred related to software warranties and none are expected in the future, and as such, no accruals for warranty costs have been made. Indemnification Agreement We are party to a cross-indemnity agreement dated December 22, 2014 with ServiceLink Holdings, LLC ("ServiceLink"). Pursuant to this agreement, ServiceLink indemnifies us from liabilities relating to, arising out of or resulting from the conduct of ServiceLink’s business or any action, suit or proceeding in which we or any of our subsidiaries are named by reason of being a successor to the business of Lender Processing Services, Inc. and the cause of such action, suit or proceeding relates to the business of ServiceLink. In return, we indemnify ServiceLink for liabilities relating to, arising out of, or resulting from the conduct of our business.

Revenues

Revenues	3 Months Ended
	Mar. 31, 2022
Revenue from Contract with Customer [Abstract]
Revenues	(11) Disaggregation of Revenues The following tables summarize revenues from contracts with clients (in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, 2022 ​ ​ Servicing Origination Software Data and ​ ​ ​ ​ Software ​ Software ​ Solutions ​ Analytics ​ Total Software solutions ​ $ 204.0 ​ $ 92.5 ​ $ 296.5 ​ $ 9.5 ​ $ 306.0 Professional services ​ 18.6 ​ ​ 12.3 ​ 30.9 ​ — ​ 30.9 Data solutions ​ — ​ ​ 0.5 ​ 0.5 ​ 46.4 ​ 46.9 Other ​ — ​ ​ 2.8 ​ 2.8 ​ 0.6 ​ 3.4 Revenues ​ $ 222.6 ​ $ 108.1 ​ $ 330.7 ​ $ 56.5 ​ $ 387.2 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, 2021 ​ ​ Servicing Origination Software Data and ​ ​ ​ ​ Software ​ Software ​ Solutions ​ Analytics ​ Total Software solutions ​ $ 184.1 ​ $ 77.8 ​ $ 261.9 ​ $ 8.7 ​ $ 270.6 Professional services ​ 18.6 ​ ​ 11.8 ​ 30.4 ​ 0.2 ​ 30.6 Data solutions ​ — ​ ​ 1.2 ​ 1.2 ​ 44.4 ​ 45.6 Other ​ — ​ ​ 2.3 ​ 2.3 ​ 0.6 ​ 2.9 Revenues ​ $ 202.7 ​ $ 93.1 ​ $ 295.8 ​ $ 53.9 ​ $ 349.7 ​ Our Software Solutions segment offers leading software and hosting solutions that facilitate and automate many of the mission-critical business processes across the homeownership lifecycle. These solutions primarily consist of processing and workflow management software applications. Our servicing software solutions primarily include our core servicing software solution that automates loan servicing, including loan setup and ongoing processing, customer service, accounting, reporting to the secondary mortgage market and investors and web-based workflow information systems. Our origination software solutions primarily include our solutions that automate and facilitate the origination of mortgage loans, offer product, pricing and eligibility capabilities and provide an interconnected network allowing the various parties and systems associated with lending transactions to exchange data quickly and efficiently. Professional services consists of pre-implementation and post-implementation support and services and are primarily billed on a time and materials basis. Professional services may also include dedicated teams provided as part of agreements with software and hosting solutions clients. Our Data and Analytics segment offers data and analytics solutions to the mortgage, real estate and capital markets verticals. These solutions include property ownership data, lien data, servicing data, automated valuation models, collateral risk scores, behavioral models, a multiple listing service software solution and other data solutions. Transaction Price Allocated to Future Performance Obligations Our disclosure of transaction price allocated to future performance obligations excludes the following: ● Volume-based fees in excess of contractual minimums and other usage-based fees to the extent they are part of a single performance obligation and meet certain variable allocation criteria; ● Performance obligations that are part of a contract with an original expected duration of one year or less; and ● Transactional fees based on a fixed fee per transaction when we have the right to invoice once we have completed the performance obligation. As of March 31, 2022, the aggregate amount of the transaction price that is allocated to our future performance obligations was approximately $2.7 billion and is expected to be recognized as follows: 19% by December 31, 2022 2024 2026

Equity

Equity	3 Months Ended
	Mar. 31, 2022
Equity [Abstract]
Equity	(12) Share Repurchase Program On February 12, 2020, our Board of Directors approved a three-year share repurchase program authorizing us to repurchase up to 10.0 million shares of our outstanding common stock through February 12, 2023, through open market purchases, negotiated transactions or other means, in accordance with applicable securities laws and other restrictions. During the three months ended March 31, 2021, we repurchased 0.6 million shares of our common stock for an aggregate of $46.7 million at an average price per share of $75.19. We did not repurchase any shares during the three months ended March 31, 2022. As of March 31, 2022, we have 8.0 million shares remaining under our share repurchase authorization. ​ Omnibus Incentive Plan A summary of restricted shares and RSUs granted in 2022 is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Number of shares ​ Grant date fair ​ Vesting period ​ ​ Dates granted value per share (in years) Vesting criteria March 10, 2022 (1) ​ 809,166 ​ $ 57.18 ​ 3.0 ​ Service and Performance March 31, 2022 ​ 1,035 ​ $ 57.99 ​ 3.0 ​ Service (1) This award is subject to an independent performance target for each of three consecutive 12-month measurement periods. Vesting of each tranche is independent of the satisfaction of the annual performance target for other tranches. Activity related to restricted stock and RSUs in 2022 is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted average ​ ​ ​ ​ grant date ​ Shares fair value Balance, December 31, 2021 ​ 1,269,789 $ 70.79 Granted 810,201 ​ $ 57.18 Forfeited (20,429) ​ $ 71.72 Vested (562,223) ​ $ 65.61 Balance, March 31, 2022 1,497,338 ​ $ 65.36 ​ Equity-based compensation expense related to our restricted shares and RSUs was $8.5 million and $7.2 million for the three months ended March 31, 2022 and 2021, respectively. These expenses are included in Operating expenses in the Condensed Consolidated Statements of Earnings and Comprehensive Earnings (Unaudited). As of March 31, 2022, total unrecognized compensation cost was $89.1 million and is expected to be recognized over a weighted average period of approximately 2.0 years. Profits Interests Units The fair value of OB PIUs is measured using the Black-Scholes model. The OB PIUs vest over three years, with cliff vesting after the third year. If no public offering has been consummated as of the third anniversary of the acquisition of Optimal Blue, holders of the OB PIUs have an option to put their profit interests to us once per quarter for the twelve months that begins six months after the OB PIU holder’s vesting date, and once per year thereafter. The units may be settled in cash or Black Knight common stock or a combination of both at our election and will be settled at the current fair value at the time we receive notice of the put election. As the OB PIUs provide for redemption features not solely within our control, we classify the redemption value outside of permanent equity in redeemable noncontrolling interests. The redemption value is equal to the difference in the per unit fair value of the underlying member units and the hurdle amount, based upon the proportionate required service period rendered to date. Equity-based compensation expense related to the OB PIUs was $2.2 million for the three months ended March 31, 2022 and 2021. As of March 31, 2022, the total unrecognized compensation cost related to non-vested OB PIUs is $14.5 million, which is expected to be recognized over a weighted average period of approximately 1.7 years.

Segment Information

Segment Information	3 Months Ended
	Mar. 31, 2022
Segment Reporting [Abstract]
Segment Information	(13) Accounting Standards Codification (“ASC”) Topic 280, Segment Reporting Revenues Separate discrete financial information is available for these two segments, and the operating results of each segment are regularly evaluated by the CODM in order to assess performance and allocate resources. We use EBITDA as the primary profitability measure for making decisions regarding ongoing operations. EBITDA is earnings before Interest expense, net, Income tax (benefit) expense and Depreciation and amortization. It also excludes Equity in earnings of unconsolidated affiliates. We do not allocate Interest expense, net, Other expense, net, Income tax (benefit) expense, equity-based compensation and certain other items, such as purchase accounting adjustments and acquisition-related costs to the segments, since these items are not considered in evaluating the segments’ overall operating performance. Segment asset information is not included below because we do not use it to evaluate performance or allocate resources. Summarized financial information concerning our segments is shown in the tables below (in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, 2022 ​ ​ Software Data and ​ Corporate and ​ ​ ​ ​ Solutions ​ Analytics Other Total Revenues ​ $ 330.7 $ 56.5 ​ $ — ​ $ 387.2 Expenses: ​ ​ Operating expenses ​ 142.5 37.5 ​ 27.9 (1) 207.9 Transition and integration costs ​ — — ​ 7.6 (2) 7.6 EBITDA ​ 188.2 ​ 19.0 ​ (35.5) 171.7 Depreciation and amortization ​ 35.1 3.8 ​ 52.6 (3) 91.5 Operating income (loss) ​ 153.1 ​ 15.2 ​ (88.1) 80.2 Interest expense, net ​ ​ (21.1) Other expense, net ​ ​ (1.2) Earnings before income taxes and equity in earnings of unconsolidated affiliates ​ ​ 57.9 Income tax benefit ​ ​ (1.1) Earnings before equity in earnings of unconsolidated affiliates ​ ​ 59.0 Equity in earnings of unconsolidated affiliates, net of tax ​ ​ 303.1 Net earnings ​ ​ 362.1 Net losses attributable to redeemable noncontrolling interests ​ ​ 2.5 Net earnings attributable to Black Knight ​ ​ $ 364.6 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, 2021 ​ ​ Software ​ Data and ​ Corporate and ​ ​ ​ Solutions Analytics Other Total Revenues ​ $ 295.8 ​ $ 53.9 ​ $ — ​ $ 349.7 Expenses: ​ ​ ​ Operating expenses ​ 124.9 ​ 34.2 ​ 27.1 (1) 186.2 Transition and integration costs ​ — ​ — ​ 7.9 (2) 7.9 EBITDA ​ 170.9 ​ 19.7 ​ (35.0) 155.6 Depreciation and amortization ​ 31.2 ​ 3.8 ​ 52.8 (3) 87.8 Operating income (loss) ​ 139.7 ​ 15.9 ​ (87.8) 67.8 Interest expense, net ​ ​ ​ (20.3) Other expense, net ​ ​ ​ (3.2) Earnings before income taxes and equity in earnings of unconsolidated affiliates ​ ​ ​ 44.3 Income tax expense ​ ​ ​ 5.2 Earnings before equity in earnings of unconsolidated affiliates ​ ​ ​ 39.1 Equity in earnings of unconsolidated affiliates, net of tax ​ ​ ​ 6.4 Net earnings ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 45.5 Net losses attributable to redeemable noncontrolling interests ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 8.6 Net earnings attributable to Black Knight ​ ​ ​ $ 54.1 (1) Operating expenses for Corporate and Other includes equity-based compensation, including certain related payroll taxes, of $11.2 million and $10.5 million for the three months ended March 31, 2022 and 2021, respectively. (2) Transition and integration costs primarily consists of costs associated with acquisitions. (3) Depreciation and amortization for Corporate and Other primarily represents net incremental depreciation and amortization adjustments associated with the application of purchase accounting recorded in accordance with GAAP.

Basis of Presentation and Ove_2

Basis of Presentation and Overview (Policies)	3 Months Ended
	Mar. 31, 2022
Accounting Policies [Abstract]
Basis of Presentation and Overview	The accompanying Condensed Consolidated Financial Statements (Unaudited) of Black Knight, Inc. (“BKI”) and its subsidiaries (" Black Knight," the "Company," "we," "us" or "our" The preparation of these Condensed Consolidated Financial Statements (Unaudited) in conformity with GAAP requires management to make estimates and assumptions. These estimates and assumptions affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the Condensed Consolidated Financial Statements (Unaudited), as well as the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from those estimates. This Quarterly Report on Form 10-Q should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2021 filed with the Securities and Exchange Commission ("SEC") on February 25, 2022 and other filings with the SEC.
Principles of Consolidation	Principles of Consolidation The Condensed Consolidated Financial Statements (Unaudited) include the accounts of BKI, its wholly-owned subsidiaries and non-wholly owned subsidiaries in which we have a controlling financial interest either through voting rights or means other than voting rights. Intercompany transactions and balances have been eliminated in consolidation. Where our ownership interest in a consolidated subsidiary is less than 100%, the noncontrolling interests’ share of these non-wholly owned subsidiaries is reported in our Condensed Consolidated Balance Sheets (Unaudited) as a separate component of equity or within temporary equity. The noncontrolling interests’ share of the net earnings (loss) of these non-wholly owned subsidiaries is reported in our Condensed Consolidated Statements of Earnings and Comprehensive Earnings (Unaudited) as an adjustment to our net earnings to arrive at Net earnings attributable to Black Knight.
Redeemable Noncontrolling Interests	Redeemable Noncontrolling Interests Prior to February 15, 2022, Optimal Blue Holdco, LLC (“Optimal Blue Holdco”) was a non-wholly owned subsidiary and considered a variable interest entity. We were the primary beneficiary of Optimal Blue Holdco through our controlling interest and our rights established in the Second Amended and Restated Limited Liability Company Agreement of Optimal Blue Holdco dated November 24, 2020 (the “OB Holdco LLC Agreement”). As such, we controlled Optimal Blue Holdco and its subsidiaries, and we consolidated its financial position and results of operations. Prior to February 15, 2022, we owned 60% of Optimal Blue Holdco. Redeemable noncontrolling interests represented the collective 40% equity interest in Optimal Blue Holdco owned by Cannae Holdings, LLC ("Cannae") and affiliates of Thomas H. Lee Partners, L.P. ("THL"). As these redeemable noncontrolling interests provided for redemption features not solely within our control, they were presented outside of shareholders' equity. On February 15, 2022, we entered into a purchase agreement with Cannae and THL and acquired all of their issued and outstanding Class A units of Optimal Blue Holdco through Optimal Blue I, LLC (“Optimal Blue I”), a Delaware limited liability company and our wholly-owned subsidiary, in exchange for aggregate consideration of 36.4 million shares of Dun & Bradstreet Holdings, Inc. (“DNB”) common stock valued at $722.5 million and $433.5 million in cash, included as a financing cash outflow on the Condensed Consolidated Statements of Cash Flows (Unaudited), funded with borrowings under our revolving credit facility. The aggregate consideration of $1.156 billion and number of shares of DNB common stock paid to Cannae and THL was based on the 20-day volume-weighted average trading price of DNB for the period ended on February 14, 2022.
Reporting Segments	Reporting Segments We conduct our operations through two reporting segments: (1) Software Solutions and (2) Data and Analytics. See further discussion in Note 13 — Segment Information
Reclassification	Reclassifications Certain reclassifications have been made to the prior year amounts to conform to the classifications used in 2022. Certain receivables previously included in Trade and other receivables, including receivables from related parties on our Condensed Consolidated Statements of Cash Flows (Unaudited) are now included in Prepaid expenses and other assets. We also reclassified certain deferred compensation plan assets and liabilities between Prepaid expenses and other assets and Trade accounts payable and other liabilities on our Condensed Consolidated Statements of Cash Flows (Unaudited). ​ Merger Agreement On May 4, 2022, we entered into a definitive agreement to be acquired by Intercontinental Exchange, Inc. (“ICE”), a leading global provider of data, technology, and market infrastructure, in a transaction valued at approximately $13.1 billion, or $85 per share, with consideration in the form of a mix of cash (80%) and stock (20%) (the “Transaction”). The aggregate cash consideration in the Transaction consists of approximately $10.5 billion and the aggregate stock consideration is valued at approximately $2.6 billion based on ICE’s 10-day volume weighted average price as of May 2, 2022 of $118.09. Black Knight shareholders can elect to receive either cash or stock, subject to proration, with the value of the cash election and the stock election equalized at closing. The Transaction is expected to close in the first half of 2023, following the receipt of regulatory approvals, Black Knight shareholder approval and the satisfaction of customary closing conditions. The Transaction has been approved by the Boards of Directors of Black Knight and ICE.

Condensed Consolidated Financ_2

Condensed Consolidated Financial Statement Details (Tables)	3 Months Ended
	Mar. 31, 2022
Accounting Policies [Abstract]
Schedule of Cash and Cash Equivalents	Cash and cash equivalents are unrestricted and include the following (in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2022 December 31, 2021 Cash ​ $ 21.1 ​ $ 24.0 Cash equivalents ​ 6.5 ​ 53.1 Cash and cash equivalents ​ $ 27.6 ​ $ 77.1
Schedule of Trade Receivables, Net	A summary of Trade receivables, net of allowance for credit losses is as follows (in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2022 December 31, 2021 Trade receivables — billed ​ $ 149.4 ​ $ 147.4 Trade receivables — unbilled ​ 47.8 ​ 47.1 Trade receivables ​ 197.2 ​ 194.5 Allowance for credit losses ​ (2.9) ​ (2.7) Trade receivables, net ​ $ 194.3 ​ $ 191.8
Prepaid Expenses and Other Current Assets	Prepaid expenses and other current assets consist of the following (in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2022 December 31, 2021 Prepaid expenses ​ $ 52.4 ​ $ 44.7 Contract assets, net ​ 21.6 ​ 23.0 Income tax receivables ​ ​ 0.9 ​ ​ 6.5 Other current assets ​ 10.2 ​ 8.8 Prepaid expenses and other current assets ​ $ 85.1 ​ $ 83.0
Other Non-Current Assets	Other non-current assets consist of the following (in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2022 December 31, 2021 Contract assets, net ​ $ 90.3 ​ $ 80.2 Property records database ​ ​ 60.6 ​ ​ 60.6 Right-of-use assets ​ 30.7 ​ 32.9 Deferred compensation plan related assets ​ 26.5 ​ 25.2 Contract credits ​ 23.1 ​ 23.6 Prepaid expenses ​ 6.2 ​ 4.5 Other ​ 2.4 ​ 3.3 Other non-current assets ​ $ 239.8 ​ $ 230.3
Trade Accounts Payable and Other Accrued Liabilities	Trade accounts payable and other accrued liabilities consist of the following (in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2022 December 31, 2021 Accrued interest ​ $ 3.1 ​ $ 12.3 Lease liabilities, current ​ ​ 10.3 ​ ​ 10.8 Trade accounts payable ​ 10.1 ​ 7.9 Other taxes payable and accrued ​ 5.7 ​ 4.8 Accrued client liabilities ​ ​ 3.7 ​ ​ 3.8 Other ​ 22.5 ​ 24.9 Trade accounts payable and accrued liabilities ​ $ 55.4 ​ $ 64.5
Schedule of Depreciation and Amortization	Depreciation and amortization includes the following (in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, ​ 2022 2021 Other intangible assets ​ $ 36.8 ​ $ 38.8 Software ​ ​ 35.5 ​ ​ 30.6 Property and equipment ​ 9.9 ​ 10.2 Deferred contract costs ​ 9.3 ​ 8.2 Total ​ $ 91.5 ​ $ 87.8
Schedule of other non-current liabilities	Other non-current liabilities consist of the following (in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2022 December 31, 2021 Lease liabilities, non-current ​ $ 22.9 ​ $ 26.4 Deferred compensation plan ​ ​ 24.8 ​ ​ 24.4 Unrealized losses on interest rate swaps (Note 7) ​ ​ 2.1 ​ ​ 13.9 Other ​ ​ 13.5 ​ ​ 14.0 Other non-current liabilities ​ $ 63.3 ​ $ 78.7

Investments in Unconsolidated_2

Investments in Unconsolidated Affiliates (Tables)	3 Months Ended
	Mar. 31, 2021
Equity Method Investments and Joint Ventures [Abstract]
Unconsolidated VIEs	Summarized consolidated financial information for DNB is presented below (in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2022 December 31, 2021 Current assets ​ $ 732.3 ​ $ 718.0 Non-current assets ​ 9,124.9 ​ 9,279.2 Total assets ​ $ 9,857.2 ​ $ 9,997.2 ​ ​ ​ ​ ​ ​ ​ Current liabilities, including short-term debt ​ $ 973.4 ​ $ 1,004.9 Non-current liabilities ​ 5,174.9 ​ 5,247.0 Total liabilities ​ 6,148.3 ​ 6,251.9 Total equity ​ 3,708.9 ​ 3,745.3 Total liabilities and shareholders' equity ​ $ 9,857.2 ​ $ 9,997.2 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, ​ ​ 2022 ​ 2021 ​ ​ ​ ​ ​ ​ ​ Revenues ​ $ 536.0 ​ $ 504.5 Loss before provision for income taxes and equity in net income of affiliates ​ (39.8) ​ (33.7) Net loss ​ (29.8) ​ (23.3) Net loss attributable to DNB ​ (31.3) ​ (25.0)
Equity in (losses) earnings of unconsolidated affiliates	Equity in earnings of unconsolidated affiliates, net of tax consists of the following (in millions): ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, ​ 2022 2021 Equity in losses of unconsolidated affiliates, net of tax $ (2.3) ​ $ (3.5) Non-cash gain related to DNB's issuance of common stock, net of tax — ​ 9.9 Gain related to DNB investment, net of tax ​ 305.4 ​ ​ — Equity in earnings of unconsolidated affiliates, net of tax $ 303.1 ​ $ 6.4

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2022
Earnings Per Share [Abstract]
Schedule of Basic and Diluted Earnings Per Share	​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, ​ ​ 2022 2021 Basic: ​ ​ Net earnings attributable to Black Knight ​ $ 364.6 ​ $ 54.1 Shares used for basic net earnings per share: ​ ​ Weighted average shares of common stock outstanding ​ 154.2 ​ 155.6 Basic net earnings per share ​ $ 2.36 ​ $ 0.35 ​ ​ ​ ​ ​ ​ ​ Diluted: ​ ​ Net earnings attributable to Black Knight ​ $ 364.6 ​ $ 54.1 Shares used for diluted net earnings per share: ​ ​ Weighted average shares of common stock outstanding ​ 154.2 ​ 155.6 Dilutive effect of unvested restricted shares of common stock and OB PIUs ​ 1.2 ​ 0.3 Weighted average shares of common stock, diluted ​ 155.4 ​ 155.9 Diluted net earnings per share ​ $ 2.35 ​ $ 0.35

Long-Term Debt (Tables)

Long-Term Debt (Tables)	3 Months Ended
	Mar. 31, 2022
Debt Disclosure [Abstract]
Schedule of Long-term Debt	Long-term debt consists of the following (in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2022 December 31, 2021 Term A Loan ​ $ 1,142.8 ​ $ 1,150.0 Revolving Credit Facility ​ 601.0 ​ 256.0 Senior Notes ​ 1,000.0 ​ 1,000.0 Other ​ 5.8 ​ 8.9 Total long-term debt principal ​ 2,749.6 ​ 2,414.9 Less: current portion of long-term debt ​ (33.5) ​ (32.5) Long-term debt before debt issuance costs and discount ​ 2,716.1 ​ 2,382.4 Less: debt issuance costs and discount ​ (18.9) ​ (19.8) Long-term debt, net of current portion ​ $ 2,697.2 ​ $ 2,362.6
Schedule of Maturities of Long-term Debt	As of March 31, 2022, principal maturities, including payments related to our finance leases, are as follows (in millions): ​ ​ ​ ​ ​ 2022 $ 22.4 2023 ​ ​ 33.7 2024 ​ 57.5 2025 ​ 57.5 2026 ​ 1,578.5 Thereafter ​ 1,000.0 Total ​ $ 2,749.6
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value	We enter into interest rate swap agreements to hedge forecasted monthly interest rate payments on our floating rate debt. As of March 31, 2022, we had the following interest rate swap agreements (collectively, the "Swap Agreements") (in millions): ​ ​ ​ ​ ​ ​ ​ ​ Effective dates Notional amount Fixed rates April 30, 2018 through April 30, 2023 ​ $ 250.0 2.61 % January 31, 2019 through January 31, 2023 ​ $ 300.0 2.65 % ​ ​ ​ ​ ​ ​ ​ ​ Effective dates Notional amount Fixed rate March 31, 2017 through March 31, 2022 ​ $ 200.0 2.08 % The estimated fair values of our Swap Agreements are as follows (in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2022 December 31, 2021 Other current liabilities ​ $ 2.7 ​ $ 1.0 Other non-current liabilities ​ $ 2.1 ​ $ 13.9
Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss)	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, ​ ​ 2022 ​ 2021 ​ ​ ​ Amount of loss ​ ​ Amount of loss ​ ​ Amount of gain ​ reclassified from ​ Amount of gain ​ reclassified from ​ ​ recognized ​ Accumulated OCE ​ recognized ​ Accumulated OCE ​ ​ in OCE ​ into Net earnings ​ in OCE ​ into Net earnings Swap agreements ​ $ 4.3 ​ $ 3.2 ​ $ 0.5 ​ $ 3.9

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2022
Fair Value Disclosures [Abstract]
Fair Value Measurements	The following table presents our fair value hierarchy for those assets and liabilities measured at fair value on a recurring basis (in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2022 December 31, 2021 ​ Carrying Fair value Carrying Fair value ​ ​ amount ​ Level 1 ​ Level 2 ​ Level 3 ​ amount ​ Level 1 ​ Level 2 ​ Level 3 Assets: ​ ​ ​ ​ ​ ​ ​ ​ Cash and cash equivalents (Note 2) ​ $ 27.6 ​ $ 27.6 ​ $ — ​ $ — ​ $ 77.1 ​ $ 77.1 ​ $ — ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Liabilities: ​ ​ ​ ​ ​ ​ ​ ​ Interest rate swaps (Note 7) ​ 4.8 ​ — ​ 4.8 ​ — ​ 14.9 ​ — ​ 14.9 ​ — Contingent consideration ​ 4.7 ​ — ​ — ​ 4.7 ​ 4.9 ​ — ​ — ​ 4.9 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Redeemable noncontrolling interests ​ 40.2 ​ — ​ — ​ 40.2 ​ 1,188.8 ​ — ​ — ​ 1,188.8 ​
Change in Fair Value of Contingent Consideration	The following table presents a summary of the change in fair value of our Level 3 fair value measurements (in millions): ​ ​ ​ ​ ​ Beginning balance, December 31, 2021 $ 1,193.7 Contingent consideration adjustments related to prior year acquisition (1) ​ ​ (0.2) Acquisition of remaining outstanding Class A redeemable noncontrolling interests in Optimal Blue Holdco (Note 1) ​ ​ (1,156.0) Fair value adjustment to redeemable noncontrolling interests in Optimal Blue Holdco ​ ​ 7.4 Ending balance, March 31, 2022 ​ $ 44.9

Revenues (Tables)

Revenues (Tables)	3 Months Ended
	Mar. 31, 2022
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following tables summarize revenues from contracts with clients (in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, 2022 ​ ​ Servicing Origination Software Data and ​ ​ ​ ​ Software ​ Software ​ Solutions ​ Analytics ​ Total Software solutions ​ $ 204.0 ​ $ 92.5 ​ $ 296.5 ​ $ 9.5 ​ $ 306.0 Professional services ​ 18.6 ​ ​ 12.3 ​ 30.9 ​ — ​ 30.9 Data solutions ​ — ​ ​ 0.5 ​ 0.5 ​ 46.4 ​ 46.9 Other ​ — ​ ​ 2.8 ​ 2.8 ​ 0.6 ​ 3.4 Revenues ​ $ 222.6 ​ $ 108.1 ​ $ 330.7 ​ $ 56.5 ​ $ 387.2 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, 2021 ​ ​ Servicing Origination Software Data and ​ ​ ​ ​ Software ​ Software ​ Solutions ​ Analytics ​ Total Software solutions ​ $ 184.1 ​ $ 77.8 ​ $ 261.9 ​ $ 8.7 ​ $ 270.6 Professional services ​ 18.6 ​ ​ 11.8 ​ 30.4 ​ 0.2 ​ 30.6 Data solutions ​ — ​ ​ 1.2 ​ 1.2 ​ 44.4 ​ 45.6 Other ​ — ​ ​ 2.3 ​ 2.3 ​ 0.6 ​ 2.9 Revenues ​ $ 202.7 ​ $ 93.1 ​ $ 295.8 ​ $ 53.9 ​ $ 349.7

Equity (Tables)

Equity (Tables)	3 Months Ended
	Mar. 31, 2022
Equity [Abstract]
Schedule of Restricted Stock Activity	A summary of restricted shares and RSUs granted in 2022 is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Number of shares ​ Grant date fair ​ Vesting period ​ ​ Dates granted value per share (in years) Vesting criteria March 10, 2022 (1) ​ 809,166 ​ $ 57.18 ​ 3.0 ​ Service and Performance March 31, 2022 ​ 1,035 ​ $ 57.99 ​ 3.0 ​ Service (1) This award is subject to an independent performance target for each of three consecutive 12-month measurement periods. Vesting of each tranche is independent of the satisfaction of the annual performance target for other tranches. Activity related to restricted stock and RSUs in 2022 is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted average ​ ​ ​ ​ grant date ​ Shares fair value Balance, December 31, 2021 ​ 1,269,789 $ 70.79 Granted 810,201 ​ $ 57.18 Forfeited (20,429) ​ $ 71.72 Vested (562,223) ​ $ 65.61 Balance, March 31, 2022 1,497,338 ​ $ 65.36

Segment Information (Tables)

Segment Information (Tables)	3 Months Ended
	Mar. 31, 2022
Segment Reporting [Abstract]
Schedule of Summarized Segment Financial Information	Summarized financial information concerning our segments is shown in the tables below (in millions): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, 2022 ​ ​ Software Data and ​ Corporate and ​ ​ ​ ​ Solutions ​ Analytics Other Total Revenues ​ $ 330.7 $ 56.5 ​ $ — ​ $ 387.2 Expenses: ​ ​ Operating expenses ​ 142.5 37.5 ​ 27.9 (1) 207.9 Transition and integration costs ​ — — ​ 7.6 (2) 7.6 EBITDA ​ 188.2 ​ 19.0 ​ (35.5) 171.7 Depreciation and amortization ​ 35.1 3.8 ​ 52.6 (3) 91.5 Operating income (loss) ​ 153.1 ​ 15.2 ​ (88.1) 80.2 Interest expense, net ​ ​ (21.1) Other expense, net ​ ​ (1.2) Earnings before income taxes and equity in earnings of unconsolidated affiliates ​ ​ 57.9 Income tax benefit ​ ​ (1.1) Earnings before equity in earnings of unconsolidated affiliates ​ ​ 59.0 Equity in earnings of unconsolidated affiliates, net of tax ​ ​ 303.1 Net earnings ​ ​ 362.1 Net losses attributable to redeemable noncontrolling interests ​ ​ 2.5 Net earnings attributable to Black Knight ​ ​ $ 364.6 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, 2021 ​ ​ Software ​ Data and ​ Corporate and ​ ​ ​ Solutions Analytics Other Total Revenues ​ $ 295.8 ​ $ 53.9 ​ $ — ​ $ 349.7 Expenses: ​ ​ ​ Operating expenses ​ 124.9 ​ 34.2 ​ 27.1 (1) 186.2 Transition and integration costs ​ — ​ — ​ 7.9 (2) 7.9 EBITDA ​ 170.9 ​ 19.7 ​ (35.0) 155.6 Depreciation and amortization ​ 31.2 ​ 3.8 ​ 52.8 (3) 87.8 Operating income (loss) ​ 139.7 ​ 15.9 ​ (87.8) 67.8 Interest expense, net ​ ​ ​ (20.3) Other expense, net ​ ​ ​ (3.2) Earnings before income taxes and equity in earnings of unconsolidated affiliates ​ ​ ​ 44.3 Income tax expense ​ ​ ​ 5.2 Earnings before equity in earnings of unconsolidated affiliates ​ ​ ​ 39.1 Equity in earnings of unconsolidated affiliates, net of tax ​ ​ ​ 6.4 Net earnings ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 45.5 Net losses attributable to redeemable noncontrolling interests ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 8.6 Net earnings attributable to Black Knight ​ ​ ​ $ 54.1 (1) Operating expenses for Corporate and Other includes equity-based compensation, including certain related payroll taxes, of $11.2 million and $10.5 million for the three months ended March 31, 2022 and 2021, respectively. (2) Transition and integration costs primarily consists of costs associated with acquisitions. (3) Depreciation and amortization for Corporate and Other primarily represents net incremental depreciation and amortization adjustments associated with the application of purchase accounting recorded in accordance with GAAP.

Basis of Presentation and Ove_3

Basis of Presentation and Overview - Redeemable Noncontrolling Interests (Details) - USD ($) shares in Millions, $ in Millions	Feb. 15, 2022	Mar. 31, 2022	Feb. 14, 2022
Optimal Blue Holdco, LLC
Noncontrolling Interest [Line Items]
Noncontrolling ownership interest in consolidated subsidiary (as a percent)		60.00%
Equity Method Investments, Number of Shares Sold	36.4
Equity Method Investments, Fair Value Disclosure			$ 722.5
Optimal Blue Holdco, LLC
Noncontrolling Interest [Line Items]
Equity Method Investments, Number of Shares Sold	36.4
Equity Method Investments, Fair Value Disclosure	$ 722.5
Total purchase price consideration	1,156
Cash paid	$ 433.5
Equity interest owned (as a percent)	100.00%
Cannae Holdings, LLC and Thomas H. Lee Partners, LP | Optimal Blue Holdco, LLC
Noncontrolling Interest [Line Items]
Noncontrolling ownership interest in consolidated subsidiary (as a percent)		40.00%

Basis of Presentation and Ove_4

Basis of Presentation and Overview (Details)	3 Months Ended
	Mar. 31, 2022segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of segments	2

Basis of Presentation and Ove_5

Basis of Presentation and Overview - Merger Agreement (Details) - Intercontinental Exchange Inc [Member] - Black Knight Inc [Member] - Subsequent Event $ / shares in Units, $ in Billions	May 04, 2022USD ($)$ / shares
Business Acquisition [Line Items]
Total purchase price consideration	$ 13.1
Share price (in USD per share) | $ / shares	$ 85
Percent of transaction consiting of cash	80.00%
Percent of tranaction consisting of stock	20.00%
Cash paid	$ 10.5
Value of stock consideration	$ 2.6
10-day voulume weighted average share price | $ / shares	$ 118.09

Condensed Consolidated Financ_3

Condensed Consolidated Financial Statement Details - Cash and Cash Equivalents (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Accounting Policies [Abstract]
Cash	$ 21.1	$ 24
Cash equivalents	6.5	53.1
Cash and cash equivalents	$ 27.6	$ 77.1

Condensed Consolidated Financ_4

Condensed Consolidated Financial Statement Details - Trade Receivables, Net (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Trade receivables	$ 197.2	$ 194.5
Allowance for credit losses	(2.9)	(2.7)
Trade receivables, net	194.3	191.8
Trade receivables - billed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Trade receivables	149.4	147.4
Trade receivables - unbilled
Accounts, Notes, Loans and Financing Receivable [Line Items]
Trade receivables	$ 47.8	$ 47.1

Condensed Consolidated Financ_5

Condensed Consolidated Financial Statement Details - Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Accounting Policies [Abstract]
Prepaid expenses	$ 52.4	$ 44.7
Contract assets, net	21.6	23
Income tax receivable	0.9	6.5
Other assets current	10.2	8.8
Prepaid expenses and other current assets	$ 85.1	$ 83

Condensed Consolidated Financ_6

Condensed Consolidated Financial Statement Details - Other Non-Current Assets (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Contract assets, net	$ 90.3	$ 80.2
Property records database	60.6	60.6
Right-of-use assets	30.7	32.9
Deferred compensation plan related assets	26.5	25.2
Contract credits	23.1	23.6
Prepaid expenses	6.2	4.5
Other	2.4	3.3
Other non-current assets	$ 239.8	$ 230.3

Condensed Consolidated Financ_7

Condensed Consolidated Financial Statement Details - Trade Accounts Payable and Other Accrued Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Accounting Policies [Abstract]
Accrued interest	$ 3.1	$ 12.3
Lease liabilities, current	10.3	10.8
Trade accounts payable	10.1	7.9
Other taxes payable and accrued	5.7	4.8
Accrued client liabilities	3.7	3.8
Other	22.5	24.9
Trade accounts payable and accrued liabilities	$ 55.4	$ 64.5

Condensed Consolidated Financ_8

Condensed Consolidated Financial Statement Details - Deferred Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Accounting Policies [Abstract]
Deferred revenue, amount recognized	$ 20.9	$ 17.7

Condensed Consolidated Financ_9

Condensed Consolidated Financial Statement Details - Depreciation and Amortization (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Schedule of Depreciation and Amortization Expense [Line Items]
Deferred contract costs	$ 9.3	$ 8.2
Depreciation and amortization	91.5	87.8
Other Intangible Assets
Schedule of Depreciation and Amortization Expense [Line Items]
Depreciation and amortization	36.8	38.8
Computer software
Schedule of Depreciation and Amortization Expense [Line Items]
Depreciation and amortization	35.5	30.6
Property and equipment
Schedule of Depreciation and Amortization Expense [Line Items]
Depreciation and amortization	$ 9.9	$ 10.2

Condensed Consolidated Finan_10

Condensed Consolidated Financial Statement Details - Other Non-Current Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Accounting Policies [Abstract]
Lease liabilities, non-current	$ 22.9	$ 26.4
Deferred compensation plan	24.8	24.4
Unrealized losses on interest rate swaps (Note 7)	2.1	13.9
Other	13.5	14
Other non-current liabilities	$ 63.3	$ 78.7

Business Acquisitions - Additio

Business Acquisitions - Additional Information (Details)	Jul. 07, 2021	May 17, 2021
eMBS
Business Acquisition [Line Items]
Equity interest acquired (percent)		100.00%
Top of Mind
Business Acquisition [Line Items]
Equity interest acquired (percent)	100.00%

Business Acquisitions - Summary

Business Acquisitions - Summary of Consideration and Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions	Feb. 15, 2022	Mar. 31, 2022	Dec. 31, 2021
Business Acquisition [Line Items]
Goodwill		$ 3,817.3	$ 3,817.3
Optimal Blue Holdco, LLC
Business Acquisition [Line Items]
Cash paid	$ 433.5
Total consideration, net	$ 1,156

Investments in Unconsolidated_3

Investments in Unconsolidated Affiliates - Narrative (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	Feb. 15, 2022	Jan. 08, 2021	Mar. 31, 2022	Feb. 14, 2022	Jan. 07, 2021
Optimal Blue Holdco, LLC
Schedule of Equity Method Investments [Line Items]
Fair value of investment				$ 722.5
Equity Method Investments, Number of Shares Sold	36.4
Equity Method Investments, Fair Value Disclosure				$ 722.5
D&B Investment
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Realized Gain (Loss) on Disposal, Tax	$ 102.6
D&B Investment
Schedule of Equity Method Investments [Line Items]
Ownership interest (percent)			4.30%
Share price (in USD per share)			$ 17.52
Fair value of investment			$ 323.7
Equity Method Investment, Realized Gain (Loss) on Disposal	$ 305.4		305.4
Equity Method Investments, Fair Value Disclosure			$ 323.7
D&B Investment | Maximum
Schedule of Equity Method Investments [Line Items]
Ownership interest (percent)			20.00%
D&B Investment | Bisnode Business Information Group AB
Schedule of Equity Method Investments [Line Items]
Issuance of common stock (in shares)		6.2
Ownership interest (percent)		12.80%			13.00%

Investments in Unconsolidated_4

Investments in Unconsolidated Affiliates - Summarized Financial Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020
Variable Interest Entity [Line Items]
Current assets	$ 307.1		$ 352.1
Total assets	5,943		6,350.9
Current liabilities, including short-term debt	365.9		264.8
Total liabilities	3,451.8		3,071.7
Total shareholders' equity	2,451	$ 2,614.7	2,090.4	$ 2,627.7
Total liabilities, redeemable noncontrolling interests and shareholders' equity	5,943		6,350.9
Revenues	387.2	349.7
Loss before provision for income taxes and equity in net income of affiliates	57.9	44.3
Net loss	362.1	45.5
Net earnings attributable to Black Knight	364.6	54.1
Variable Interest Entity, Not Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Current assets	732.3		718
Non-current assets	9,124.9		9,279.2
Total assets	9,857.2		9,997.2
Current liabilities, including short-term debt	973.4		1,004.9
Non-current liabilities	5,174.9		5,247
Total liabilities	6,148.3		6,251.9
Total shareholders' equity	3,708.9		3,745.3
Total liabilities, redeemable noncontrolling interests and shareholders' equity	9,857.2		$ 9,997.2
Revenues	536	504.5
Loss before provision for income taxes and equity in net income of affiliates	(39.8)	(33.7)
Net loss	(29.8)	(23.3)
Net earnings attributable to Black Knight	$ (31.3)	$ (25)

Investments in Unconsolidated_5

Investments in Unconsolidated Affiliates - Earnings of Unconsolidated Entities (Details) - USD ($) $ in Millions	Feb. 15, 2022	Mar. 31, 2022	Mar. 31, 2021
Schedule of Equity Method Investments [Line Items]
Non-cash gain related to DNB's issuance of common stock, net of tax			$ 9.9
Equity in earnings of unconsolidated affiliates, net of tax		$ 303.1	6.4
D&B Investment
Schedule of Equity Method Investments [Line Items]
Gain related to DNB investment, net of tax	$ 305.4	305.4
Equity in earnings of unconsolidated affiliates, net of tax		303.1	6.4
D&B Investment | Prior to change in accounting policy
Schedule of Equity Method Investments [Line Items]
Equity in earnings of unconsolidated affiliates, net of tax		$ (2.3)	$ (3.5)

Earnings Per Share - Computatio

Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Basic:
Net earnings attributable to Black Knight	$ 364.6	$ 54.1
Shares used for basic net earnings per share:
Weighted average shares of common stock outstanding	154.2	155.6
Basic net earnings per share (in dollars per share)	$ 2.36	$ 0.35
Diluted:
Net earnings attributable to Black Knight	$ 364.6	$ 54.1
Shares used for diluted net earnings per share:
Weighted average shares of common stock outstanding	154.2	155.6
Dilutive effect of unvested restricted shares of common stock and OB PIUs	1.2	0.3
Weighted average shares of common stock, diluted	155.4	155.9
Diluted net earnings per share (in dollars per share)	$ 2.35	$ 0.35

Related Party Transactions - DN

Related Party Transactions - DNB (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Related Party Transaction [Line Items]
Deferred Revenue, Current	$ 68.1	$ 64.6
Deferred Revenue, Noncurrent	$ 74.2	81.5
Access to Certain Data Assets [Member]
Related Party Transaction [Line Items]
Related party prepaid fees		2.3
D&B Investment
Related Party Transaction [Line Items]
Agreement term	5 years
Related party receivables	$ 0.1	0.2
Related party revenues	1
D&B Investment | Products And Data [Member]
Related Party Transaction [Line Items]
Amount of agreement	34
D&B Investment | Professional services
Related Party Transaction [Line Items]
Deferred Revenue		7.6
Deferred Revenue, Current	6.6	6.2
Deferred Revenue, Noncurrent		$ 1.4
D&B Investment | Access to Certain Data Assets [Member]
Related Party Transaction [Line Items]
Amount of agreement	24
Related party expenses	1.1
Related party prepaid fees	$ 1.1

Related Party Transactions - Tr

Related Party Transactions - Trasimene (Details) $ in Millions	3 Months Ended
	Mar. 31, 2021USD ($)
Trasimene Capital Management, LLC
Related Party Transaction [Line Items]
Acquisition-related transaction costs	$ 0.3

Long-Term Debt - Long-term Debt

Long-Term Debt - Long-term Debt Components (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Total long-term debt principal	$ 2,749.6	$ 2,414.9
Less: current portion of long-term debt	(33.5)	(32.5)
Long-term debt before debt issuance costs and discount	2,716.1	2,382.4
Less: debt issuance costs and discount	(18.9)	(19.8)
Long-term debt, net of current portion	2,697.2	2,362.6
Other Debt
Debt Instrument [Line Items]
Total long-term debt principal	5.8	8.9
Term Loan | Term A Loan
Debt Instrument [Line Items]
Total long-term debt principal	1,142.8	1,150
Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Total long-term debt principal	601	256
Senior Notes
Debt Instrument [Line Items]
Total long-term debt principal	$ 1,000	$ 1,000

Long-Term Debt - Principal Matu

Long-Term Debt - Principal Maturities of Debt (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Maturities of Long-term Debt [Abstract]
2022	$ 22.4
2023	33.7
2024	57.5
2025	57.5
2026	1,578.5
Thereafter	1,000
Total long-term debt principal	$ 2,749.6	$ 2,414.9

Long-Term Debt - Credit Agreeme

Long-Term Debt - Credit Agreement Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 10, 2021
Debt Instrument [Line Items]
Debt Refinancing Costs		$ 2.5
Revolving Credit Facility
Debt Instrument [Line Items]
Amount unused on the Revolving Credit Facility	$ 399
Amended and Restated Credit Agreement | Term A Loan
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 1,150
Amended and Restated Credit Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 1,000
Term Loan and Revolving Credit Facility [Member] | Amended and Restated Credit Agreement
Debt Instrument [Line Items]
Unused capacity, commitment fee (as a percent)	20.00%
Term Loan and Revolving Credit Facility [Member] | Amended and Restated Credit Agreement | Eurodollar
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	1.50%
Term Loan | Amended and Restated Credit Agreement
Debt Instrument [Line Items]
Term loans, interest rate at period end (as a percent)	1.90%

Long-Term Debt - Senior Notes (

Long-Term Debt - Senior Notes (Details) - Senior Notes $ in Billions	Aug. 26, 2020USD ($)
Debt Instrument [Line Items]
Principal amount of debt	$ 1
Stated interest rate	3.625%

Long-Term Debt - Other Debt and

Long-Term Debt - Other Debt and FV (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2022	Aug. 26, 2020
Debt Instrument [Line Items]
Non-cash financing and investing activity related to unpaid portion of finance lease agreements	$ 3.3
Senior Notes
Debt Instrument [Line Items]
Stated interest rate			3.625%
Long-term Debt, Fair Value		$ 950
Long-term debt		$ 990

Long-Term Debt - Interest Rate

Long-Term Debt - Interest Rate Swaps Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Jan. 31, 2019	Apr. 30, 2018	Mar. 31, 2017
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net	$ 7.5	$ 4.4
Unrealized holding losses, net of tax(1)	4.3	$ 0.5
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Month, Gross	4.9
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net	3.6
Interest Rate Swap
Derivative [Line Items]
Derivative, Fixed Interest Rate						2.08%
Derivative, Gain (Loss) on Derivative, Net	4.8		$ 14.9
Unrealized holding losses, net of tax(1)	$ 3.6		$ 11.1
London Interbank Offered Rate (LIBOR) [Member] | Interest Rate Swap
Derivative [Line Items]
Derivative, Notional Amount Per Derivative Instrument				$ 300	$ 250	$ 200
Derivative, Fixed Interest Rate				2.65%	2.61%
Derivative, Basis Spread on Variable Rate	0.46%

Long-Term Debt - Swap Agreement

Long-Term Debt - Swap Agreements in the Consolidated Balance Sheets (Details) - Interest Rate Swap - Designated as Hedging Instrument - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Other current liabilities
Derivatives, Fair Value [Line Items]
Derivative liability, fair value	$ 2.7	$ 1
Other non-current liabilities
Derivatives, Fair Value [Line Items]
Derivative liability, fair value	$ 2.1	$ 13.9

Long-Term Debt - Effect of Deri

Long-Term Debt - Effect of Derivative Instruments on Amounts Recognized in Other Comprehensive Earnings (Details) - Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] - Interest Rate Swap - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Loss Recognized in Other Comprehensive Income (Loss), Effective Portion	$ 4.3	$ 0.5
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	$ 3.2	$ 3.9

Fair Value Measurements - Summa

Fair Value Measurements - Summary of Fair Value Measurements (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Assets:
Cash and cash equivalents	$ 27.6	$ 77.1
Liabilities:
Interest rate swaps	4.8	14.9
Contingent consideration	4.7	4.9
Redeemable noncontrolling interests	40.2	1,188.8
Level 1
Assets:
Cash and cash equivalents	27.6	77.1
Level 2
Liabilities:
Interest rate swaps	4.8	14.9
Level 3
Liabilities:
Contingent consideration	4.7	4.9
Redeemable noncontrolling interests	$ 40.2	$ 1,188.8

Fair Value Measurements - Sum_2

Fair Value Measurements - Summary of Change In Fair Value Of Contingent Consideration (Details) - Level 3 $ in Millions	3 Months Ended
	Mar. 31, 2022USD ($)
Business Acquisition [Line Items]
Beginning balance, December 31, 2021	$ 1,193.7
Acquisition of remaining Class A redeemable noncontrolling interests in Optimal Blue Holdco (Note 1)	(1,156)
Ending balance, March 31, 2022	44.9
Compass Analytics
Business Acquisition [Line Items]
Contingent consideration adjustments related to prior year acquisition(1)	(0.2)
Fair value adjustment to redeemable noncontrolling interests in Optimal Blue Holdco	(0.2)
Optimal Blue Holdco, LLC
Business Acquisition [Line Items]
Contingent consideration adjustments related to prior year acquisition(1)	7.4
Fair value adjustment to redeemable noncontrolling interests in Optimal Blue Holdco	$ 7.4

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Tax Disclosure [Abstract]
Effective tax rate	(1.90%)	11.70%
Discrete income tax benefit	$ 14.1

Revenues - Disaggregation of Re

Revenues - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Revenues	$ 387.2	$ 349.7
Software and hosting solutions
Disaggregation of Revenue [Line Items]
Revenues	306	270.6
Professional services
Disaggregation of Revenue [Line Items]
Revenues	30.9	30.6
Data solutions
Disaggregation of Revenue [Line Items]
Revenues	46.9	45.6
Other
Disaggregation of Revenue [Line Items]
Revenues	3.4	2.9
Operating Segments | Software Solutions
Disaggregation of Revenue [Line Items]
Revenues	330.7	295.8
Operating Segments | Software Solutions | Software and hosting solutions
Disaggregation of Revenue [Line Items]
Revenues	296.5	261.9
Operating Segments | Software Solutions | Professional services
Disaggregation of Revenue [Line Items]
Revenues	30.9	30.4
Operating Segments | Software Solutions | Data solutions
Disaggregation of Revenue [Line Items]
Revenues	0.5	1.2
Operating Segments | Software Solutions | Other
Disaggregation of Revenue [Line Items]
Revenues	2.8	2.3
Operating Segments | Data and Analytics
Disaggregation of Revenue [Line Items]
Revenues	56.5	53.9
Operating Segments | Data and Analytics | Software and hosting solutions
Disaggregation of Revenue [Line Items]
Revenues	9.5	8.7
Operating Segments | Data and Analytics | Professional services
Disaggregation of Revenue [Line Items]
Revenues		0.2
Operating Segments | Data and Analytics | Data solutions
Disaggregation of Revenue [Line Items]
Revenues	46.4	44.4
Operating Segments | Data and Analytics | Other
Disaggregation of Revenue [Line Items]
Revenues	0.6	0.6
Reportable Legal Entities | Servicing Software
Disaggregation of Revenue [Line Items]
Revenues	222.6	202.7
Reportable Legal Entities | Servicing Software | Software and hosting solutions
Disaggregation of Revenue [Line Items]
Revenues	204	184.1
Reportable Legal Entities | Servicing Software | Professional services
Disaggregation of Revenue [Line Items]
Revenues	18.6	18.6
Reportable Legal Entities | Origination Software
Disaggregation of Revenue [Line Items]
Revenues	108.1	93.1
Reportable Legal Entities | Origination Software | Software and hosting solutions
Disaggregation of Revenue [Line Items]
Revenues	92.5	77.8
Reportable Legal Entities | Origination Software | Professional services
Disaggregation of Revenue [Line Items]
Revenues	12.3	11.8
Reportable Legal Entities | Origination Software | Data solutions
Disaggregation of Revenue [Line Items]
Revenues	0.5	1.2
Reportable Legal Entities | Origination Software | Other
Disaggregation of Revenue [Line Items]
Revenues	$ 2.8	$ 2.3

Revenues - Narrative (Details)

Revenues - Narrative (Details) $ in Billions	Mar. 31, 2022USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation	$ 2.7
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, percent	19.00%
Remaining performance obligation, period	9 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, percent	61.00%
Remaining performance obligation, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, percent	84.00%
Remaining performance obligation, period	2 years

Equity - Share Repurchase Progr

Equity - Share Repurchase Program (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	Feb. 12, 2020	Mar. 31, 2021	Mar. 31, 2022
Equity [Abstract]
Period in force	3 years
Authorized amount (shares)	$ 10
Number of shares repurchased (in shares)		0.6
Average cost per share		$ 75.19
Remaining authorized shares for repurchase (shares)			8
Stock Repurchased During Period, Value		$ 46.7

Equity - Equity-Based Compensat

Equity - Equity-Based Compensation Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation expense	$ 8.5	$ 7.2
Compensation cost not yet recognized	$ 89.1
Compensation cost not yet recognized, period for recognition	2 years
Profit Interests Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation expense	$ 2.2
Compensation cost not yet recognized	$ 14.5
Compensation cost not yet recognized, period for recognition	1 year 8 months 12 days
Vesting period (in years)	3 years

Equity - Restricted Stock Grant

Equity - Restricted Stock Grant (Details) - Restricted Shares and Restricted Share Units	Mar. 10, 2022$ / sharesshares	Mar. 10, 2021period	Mar. 31, 2022$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) | shares			810,201
Grants in period, weighted average grant date fair value (in dollars per share) | $ / shares			$ 57.18
Number of measurement periods | period		3
Measurement period		12 months
Tranche one
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) | shares	809,166
Grants in period, weighted average grant date fair value (in dollars per share) | $ / shares	$ 57.18
Vesting period (in years)	3 years
Tranche two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) | shares			1,035
Grants in period, weighted average grant date fair value (in dollars per share) | $ / shares			$ 57.99
Vesting period (in years)			3 years

Equity - Restricted Stock and P

Equity - Restricted Stock and Profit Interest Units (Details) - Restricted Shares and Restricted Share Units	3 Months Ended
	Mar. 31, 2022$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding shares, Balance Beginning (in shares) | shares	1,269,789
Granted (in shares) | shares	810,201
Forfeited (in shares) | shares	(20,429)
Vested (in shares) | shares	(562,223)
Outstanding shares, Balance Ending (in shares) | shares	1,497,338
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Beginning balance (in dollars per share) | $ / shares	$ 70.79
Grants in period, weighted average grant date fair value (in dollars per share) | $ / shares	57.18
Forfeitures, weighted average grant date fair value (in dollars per share) | $ / shares	71.72
Vested in period, weighted average grant date fair value (in dollars per share) | $ / shares	65.61
Ending balance (in dollars per share) | $ / shares	$ 65.36

Segment Information - Additiona

Segment Information - Additional Disclosures (Details)	3 Months Ended
	Mar. 31, 2022segment
Segment Reporting [Abstract]
Number of segments	2

Segment Information - Summarize

Segment Information - Summarized Financial Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information [Line Items]
Revenues	$ 387.2	$ 349.7
Operating expenses	207.9	186.2
Transition and integration costs	7.6	7.9
EBITDA	171.7	155.6
Depreciation and amortization	91.5	87.8
Operating income	80.2	67.8
Interest expense, net	(21.1)	(20.3)
Other expense, net	(1.2)	(3.2)
Earnings before income taxes and equity in earnings of unconsolidated affiliates	57.9	44.3
Income tax expense	(1.1)	5.2
Earnings before equity in earnings of unconsolidated affiliates	59	39.1
Equity in earnings of unconsolidated affiliates, net of tax	303.1	6.4
Net earnings	362.1	45.5
Net losses attributable to redeemable noncontrolling interests	2.5	8.6
Net earnings attributable to Black Knight	364.6	54.1
Allocated share-based compensation expense	8.5	7.2
Operating Segments | Software Solutions
Segment Reporting Information [Line Items]
Revenues	330.7	295.8
Operating expenses	142.5	124.9
Transition and integration costs	0	0
EBITDA	188.2	170.9
Depreciation and amortization	35.1	31.2
Operating income	153.1	139.7
Operating Segments | Data and Analytics
Segment Reporting Information [Line Items]
Revenues	56.5	53.9
Operating expenses	37.5	34.2
Transition and integration costs	0	0
EBITDA	19	19.7
Depreciation and amortization	3.8	3.8
Operating income	15.2	15.9
Corporate and Other
Segment Reporting Information [Line Items]
Revenues	0	0
Operating expenses	27.9	27.1
Transition and integration costs	7.6	7.9
EBITDA	(35.5)	(35)
Depreciation and amortization	52.6	52.8
Operating income	(88.1)	(87.8)
Allocated share-based compensation expense	$ 11.2	$ 10.5