Segment Information (Tables)

12 Months Ended

Dec. 31, 2021

Segment Reporting [Abstract]

Schedule of Summarized Segment Financial Information

	Year ended December 31, 2021
	Software		Data and		Corporate and
	Solutions		Analytics		Other			Total
Revenues	$	1,250.0	$	225.2	$	—	(1)	$	1,475.2
Expenses:
Operating expenses		536.3		145.0		112.6	(2)		793.9
Transition and integration costs		—		—		13.3	(3)		13.3
EBITDA		713.7		80.2		(125.9)			668.0
Depreciation and amortization		131.1		15.5		218.4	(4)		365.0
Operating income (loss)		582.6		64.7		(344.3)			303.0
Interest expense, net									(83.6)
Other expense, net									(6.4)
Earnings before income taxes and equity in earnings of unconsolidated affiliates									213.0
Income tax expense									35.7
Earnings before equity in earnings of unconsolidated affiliates									177.3
Equity in earnings of unconsolidated affiliates, net of tax									2.6
Net earnings									179.9
Net losses attributable to redeemable noncontrolling interests									28.0
Net earnings attributable to Black Knight								$	207.9

	Year ended December 31, 2020
	Software		Data and		Corporate and
	Solutions		Analytics		Other			Total
Revenues	$	1,040.2	$	198.7	$	(0.4)	(1)	$	1,238.5
Expenses:
Operating expenses		435.6		133.9		100.1	(2)		669.6
Transition and integration costs		—		—		31.4	(3)		31.4
EBITDA		604.6		64.8		(131.9)			537.5
Depreciation and amortization		120.9		15.1		134.7	(4)		270.7
Operating income (loss)		483.7		49.7		(266.6)			266.8
Interest expense, net									(62.9)
Other income, net									16.4
Earnings before income taxes and equity in earnings of unconsolidated affiliates									220.3
Income tax expense									41.6
Earnings before equity in earnings of unconsolidated affiliates									178.7
Equity in earnings of unconsolidated affiliates, net of tax									67.1
Net earnings									245.8
Net losses attributable to redeemable noncontrolling interests									18.3
Net earnings attributable to Black Knight								$	264.1

	Year ended December 31, 2019
	Software		Data and		Corporate and
	Solutions		Analytics		Other			Total
Revenues	$	1,012.3	$	165.4	$	(0.5)	(1)	$	1,177.2
Expenses:
Operating expenses		412.7		123.4		109.9	(2)		646.0
Transition and integration costs		—		—		5.4	(3)		5.4
EBITDA		599.6		42.0		(115.8)			525.8
Depreciation and amortization		123.9		15.9		96.4	(4)		236.2
Operating income (loss)		475.7		26.1		(212.2)			289.6
Interest expense, net									(63.5)
Other expense, net									(1.4)
Earnings before income taxes and equity in losses of unconsolidated affiliates									224.7
Income tax expense									41.9
Earnings before equity in losses of unconsolidated affiliates									182.8
Equity in losses of unconsolidated affiliates, net of tax									(74.0)
Net earnings								$	108.8

(1) Revenues for Corporate and Other represent deferred revenue purchase accounting adjustments recorded in accordance with GAAP.

(2) Operating expenses for Corporate and Other includes equity-based compensation, including certain related payroll taxes, of $42.9 million, $40.6 million and $51.7 million for the years ended December 31, 2021, 2020 and 2019, respectively.

(3) Transition and integration costs primarily consists of costs associated with acquisitions and expense reduction initiatives.

(4) 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.