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Schedule III - Balance Sheet Captions (Detail) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Supplementary Insurance Information By Segment [Line Items]    
Deferred policy acquisition costs $ 24 $ 35
Claims reserves 1,284 1,178
Deferred revenues 224 272
Title Insurance and Services    
Supplementary Insurance Information By Segment [Line Items]    
Deferred policy acquisition costs 0 0
Claims reserves 1,210 1,090
Deferred revenues 6 5
Specialty Insurance    
Supplementary Insurance Information By Segment [Line Items]    
Deferred policy acquisition costs 24 35
Claims reserves 74 88
Deferred revenues $ 218 $ 267