CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) shares in Millions, $ in Millions		Total		Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comp (Loss) Earnings	Treasury Stock	Non-controlling Interests	Unconsolidated affiliates	Unconsolidated affiliates Additional Paid-in Capital	Cumulative Effect, Period of Adoption, Adjustment	Cumulative Effect, Period of Adoption, Adjustment Retained Earnings	Cumulative Effect, Period of Adoption, Adjustment Accumulated Other Comp (Loss) Earnings	Consolidated Entity	Consolidated Entity Additional Paid-in Capital
Beginning balance (in shares) at Dec. 31, 2018				72.2				0.0
Beginning balance at Dec. 31, 2018		$ 1,199.7		$ 0.0	$ 1,146.2	$ 45.8	$ (67.2)	$ (0.2)	$ 75.1			$ 15.5	$ 20.5	$ (5.0)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive earnings — unrealized gain on investments and other financial instruments, net of tax		(0.1)	[1]				(0.1)
Other comprehensive earnings — unrealized earnings of investments in unconsolidated affiliates, net of tax		8.2	[2]				8.2
Reclassification adjustments for unrealized gains and losses on unconsolidated affiliates, net of tax, included in net earnings		4.7	[3]				4.7
Dun & Bradstreet equity issuance costs		(1.4)			(1.4)
Stock-based compensation										$ 4.6	$ 4.6				$ 1.9	$ 1.9
Contribution of CSA services from FNF		0.7			0.7
Subsidiary dividends paid to noncontrolling interests		(0.6)							(0.6)
Net earnings (loss)		(1.0)				6.6			(7.6)
Ending balance (in shares) at Jun. 30, 2019				72.2				0.0
Ending balance at Jun. 30, 2019		1,232.2		$ 0.0	1,152.0	72.9	(59.4)	$ (0.2)	66.9
Beginning balance (in shares) at Mar. 31, 2019				72.2				0.0
Beginning balance at Mar. 31, 2019		1,202.5		$ 0.0	1,147.5	49.5	(65.9)	$ (0.2)	71.6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive earnings — unrealized gain on investments and other financial instruments, net of tax		0.1	[1]				0.1
Other comprehensive earnings — unrealized earnings of investments in unconsolidated affiliates, net of tax		2.3	[2]				2.3
Reclassification adjustments for unrealized gains and losses on unconsolidated affiliates, net of tax, included in net earnings		4.1	[3]				4.1
Stock-based compensation										3.1	3.1				1.0	1.0
Contribution of CSA services from FNF		0.4			0.4
Subsidiary dividends paid to noncontrolling interests		(0.2)							(0.2)
Net earnings (loss)		18.9				23.4			(4.5)
Ending balance (in shares) at Jun. 30, 2019				72.2				0.0
Ending balance at Jun. 30, 2019		1,232.2		$ 0.0	1,152.0	72.9	(59.4)	$ (0.2)	66.9
Beginning balance (in shares) at Dec. 31, 2019				79.7				0.2
Beginning balance at Dec. 31, 2019		1,529.8		$ 0.0	1,396.7	143.6	(45.9)	$ (5.9)	41.3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Equity offering, net of offering costs (in shares)				12.7
Equity offering, net of offering costs		455.0			455.0
Restaurant Group reorganization and deconsolidation of Blue Ribbon		(5.1)			5.2				(10.3)
Other comprehensive earnings — unrealized gain on investments and other financial instruments, net of tax		11.2	[1]				11.2
Other comprehensive earnings — unrealized earnings of investments in unconsolidated affiliates, net of tax		(6.4)	[2]				(6.4)
Reclassification adjustments for unrealized gains and losses on unconsolidated affiliates, net of tax, included in net earnings		44.3	[3]				44.3
Sale of noncontrolling interest in consolidated subsidiary		3.7							3.7
Treasury stock repurchases (in shares)								0.5
Treasury stock repurchases		(14.4)						$ (14.4)
Stock-based compensation										8.6	8.6				2.2	2.2
Contribution of CSA services from FNF		0.7			0.7
Net earnings (loss)		1,104.2				1,123.0			(18.8)
Ending balance (in shares) at Jun. 30, 2020				92.4				0.7
Ending balance at Jun. 30, 2020		3,133.8		$ 0.0	1,868.4	1,266.6	3.2	$ (20.3)	15.9
Beginning balance (in shares) at Mar. 31, 2020				79.7				0.6
Beginning balance at Mar. 31, 2020		2,205.0		$ 0.0	1,406.1	791.3	(0.2)	$ (16.7)	24.5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Equity offering, net of offering costs (in shares)				12.7
Equity offering, net of offering costs		455.0			455.0
Other comprehensive earnings — unrealized gain on investments and other financial instruments, net of tax		5.9	[1]				5.9
Other comprehensive earnings — unrealized earnings of investments in unconsolidated affiliates, net of tax		(2.5)	[2]				(2.5)
Reclassification adjustments for unrealized gains and losses on unconsolidated affiliates, net of tax, included in net earnings	[3]	0.0
Sale of noncontrolling interest in consolidated subsidiary		0.6							0.6
Treasury stock repurchases (in shares)								0.1
Treasury stock repurchases		(3.6)						$ (3.6)
Stock-based compensation										$ 5.9	$ 5.9				$ 1.1	$ 1.1
Contribution of CSA services from FNF		0.3			0.3
Net earnings (loss)		466.1				475.3			(9.2)
Ending balance (in shares) at Jun. 30, 2020				92.4				0.7
Ending balance at Jun. 30, 2020		$ 3,133.8		$ 0.0	$ 1,868.4	$ 1,266.6	$ 3.2	$ (20.3)	$ 15.9

[1] Net of income tax expense (benefit) of $1.6 million and less than $0.1 million for the three months ended June 30, 2020 and 2019, respectively, and $3.0 million and less than $(0.1) million for the six months ended June 30, 2020 and 2019, respectively.

[2] Net of income tax (benefit) expense of $(0.7) million and $0.6 million for the three months ended June 30, 2020 and 2019, respectively, and $(1.7) million and $2.2 million for the six months ended June 30, 2020 and 2019, respectively.

[3] Net of income tax expense of $1.0 million for the three months ended June 30, 2019 and $11.8 million and $1.2 million for the six months ended June 30, 2020 and 2019, respectively.