Goodwill (Carrying Amount of Goodwill by Operating Segment) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Goodwill [Line Items]
Beginning balance	$ 959,945	$ 846,026
Acquisitions	13,430	121,252
Foreign currency translation	(9,033)	(5,554)
Other adjustments		(1,779)
Ending balance	964,342	959,945
Title Insurance and Services
Goodwill [Line Items]
Beginning balance	913,180	799,261
Acquisitions	13,430	121,252
Foreign currency translation	(9,033)	(5,554)
Other adjustments		(1,779)
Ending balance	917,577	913,180
Specialty Insurance
Goodwill [Line Items]
Beginning balance	46,765	46,765
Ending balance	$ 46,765	$ 46,765