Segment Information - Schedule of Segment Reporting Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Segment Reporting Information [Line Items]
Title premiums	$ 1,714	$ 1,487	$ 4,351	$ 3,858
Escrow, title-related and other fees	853	693	2,201	1,892
Revenues from external customers	2,567	2,180	6,552	5,750
Interest and investment income, including recognized gains and losses	409	61	456	357
Total revenues	2,976	2,241	7,008	6,107
Depreciation and amortization	100	44	189	132
Interest expense	29	12	62	36
Earnings (loss) from continuing operations before income taxes and equity in earnings (loss) of unconsolidated affiliates	539	313	854	930
Income tax expense (benefit)	133	59	194	210
Earnings (loss) before equity in earnings of unconsolidated affiliates	406	254	660	720
Equity in earnings (loss) of unconsolidated affiliates	7	2	9	12
Net earnings (loss) from continuing operations	413	256	669	732
Assets	49,885	10,419	49,885	10,419	$ 10,677
Goodwill	4,458	2,726	4,458	2,726	$ 2,727
Corporate and Other
Segment Reporting Information [Line Items]
Title premiums	0	0	0	0
Escrow, title-related and other fees	51	40	114	145
Revenues from external customers	51	40	114	145
Interest and investment income, including recognized gains and losses	(1)	7	(3)	13
Total revenues	50	47	111	158
Depreciation and amortization	5	6	17	17
Interest expense	22	12	51	36
Earnings (loss) from continuing operations before income taxes and equity in earnings (loss) of unconsolidated affiliates	(40)	(76)	(142)	(138)
Income tax expense (benefit)	(2)	(35)	(38)	(50)
Earnings (loss) before equity in earnings of unconsolidated affiliates	(38)	(41)	(104)	(88)
Equity in earnings (loss) of unconsolidated affiliates	2	1	1	1
Net earnings (loss) from continuing operations	(36)	(40)	(103)	(87)
Assets	1,062	1,114	1,062	1,114
Goodwill	266	265	266	265
Operating Segments | Title
Segment Reporting Information [Line Items]
Title premiums	1,714	1,487	4,351	3,858
Escrow, title-related and other fees	742	653	2,007	1,747
Revenues from external customers	2,456	2,140	6,358	5,605
Interest and investment income, including recognized gains and losses	28	54	(27)	344
Total revenues	2,484	2,194	6,331	5,949
Depreciation and amortization	39	38	113	115
Interest expense	0	0	1	0
Earnings (loss) from continuing operations before income taxes and equity in earnings (loss) of unconsolidated affiliates	507	389	982	1,068
Income tax expense (benefit)	129	94	240	260
Earnings (loss) before equity in earnings of unconsolidated affiliates	378	295	742	808
Equity in earnings (loss) of unconsolidated affiliates	5	1	8	11
Net earnings (loss) from continuing operations	383	296	750	819
Assets	9,107	9,305	9,107	9,305
Goodwill	2,461	$ 2,461	2,461	$ 2,461
Operating Segments | F&G
Segment Reporting Information [Line Items]
Title premiums	0		0
Escrow, title-related and other fees	60		80
Revenues from external customers	60		80
Interest and investment income, including recognized gains and losses	382		486
Total revenues	442		566
Depreciation and amortization	56		59
Interest expense	7		10
Earnings (loss) from continuing operations before income taxes and equity in earnings (loss) of unconsolidated affiliates	72		14
Income tax expense (benefit)	6		(8)
Earnings (loss) before equity in earnings of unconsolidated affiliates	66		22
Equity in earnings (loss) of unconsolidated affiliates	0		0
Net earnings (loss) from continuing operations	66		22
Assets	39,716		39,716
Goodwill	$ 1,731		$ 1,731