Schedule IV - Reinsurance (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Title Insurance and Services
Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]
Premiums and escrow fees before reinsurance	$ 6,229	$ 6,879	$ 5,265
Ceded to other companies	19	22	16
Assumed from other companies	1	0	0
Premiums and escrow fees	$ 6,211	$ 6,857	$ 5,249
Percentage of amount assumed to premiums and escrow fees	0.00%	0.00%	0.00%
Specialty Insurance
Reinsurance Premiums For Insurance Companies By Product Segment [Line Items]
Premiums and escrow fees before reinsurance	$ 423	$ 504	$ 508
Ceded to other companies	1	6	10
Assumed from other companies	0	0	0
Premiums and escrow fees	$ 422	$ 498	$ 498
Percentage of amount assumed to premiums and escrow fees	0.00%	0.00%	0.00%