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Goodwill (Carrying Amount of Goodwill by Reportable Segment) (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2021 USD ($)
Goodwill [Line Items]
Goodwill, Gross Beginning Balance	$ 1,412,806
Accumulated impairment losses Beginning Balance	(34,178)
Goodwill, Beginning Balance	1,378,628
Acquisitions	38,276
Foreign currency translation	(626)
Goodwill, Gross Ending Balance	1,450,456
Accumulated impairment losses Ending Balance	(34,178)
Goodwill, Ending Balance	1,416,278
Title Insurance and Services
Goodwill [Line Items]
Goodwill, Gross Beginning Balance	1,366,041
Goodwill, Beginning Balance	1,366,041
Acquisitions	38,276
Foreign currency translation	(626)
Goodwill, Gross Ending Balance	1,403,691
Goodwill, Ending Balance	1,403,691
Specialty Insurance
Goodwill [Line Items]
Goodwill, Gross Beginning Balance	46,765
Accumulated impairment losses Beginning Balance	(34,178)
Goodwill, Beginning Balance	12,587
Goodwill, Gross Ending Balance	46,765
Accumulated impairment losses Ending Balance	(34,178)
Goodwill, Ending Balance	$ 12,587

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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