Goodwill (Carrying Amount of Goodwill by Reportable Segment) (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2022 USD ($)
Goodwill [Line Items]
Balance at beginning of period	$ 1,588
Acquisitions	10
Balance at end of period	1,598
Accumulated impairment losses	(34)
Title Insurance and Services
Goodwill [Line Items]
Balance at beginning of period	1,575
Acquisitions	10
Balance at end of period	1,585
Accumulated impairment losses	0
Specialty Insurance
Goodwill [Line Items]
Balance at beginning of period	13
Acquisitions	0
Balance at end of period	13
Accumulated impairment losses	$ (34)