v3.26.3
Segment Information (Schedule of Reportable Segment Performance Significant Expenses and Assets) (Parenthetical) (Detail) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Sep. 30, 2025
Segment Reporting Information [Line Items]      
Cash balance $ 1,731.1 $ 1,387.3  
Total assets 17,982.8 $ 16,228.8  
Eliminations      
Segment Reporting Information [Line Items]      
Cash balance (375.4)   $ (143.3)
Total assets (380.2) [1]   (147.1) [2]
Eliminations | Home Warranty      
Segment Reporting Information [Line Items]      
Cash balance $ (4.8)   $ (3.8)
[1] Elimination of intercompany asset balances:

Holding company cash balances also included in the title insurance and services segment

 

$

(375.4

)

Home warranty segment cash balances also included in the title insurance and services segment

 

 

(4.8

)

 

 

$

(380.2

)

 
[2] Elimination of intercompany asset balances:

Holding company cash balances also included in the title insurance and services segment

 

$

(143.3

)

Home warranty segment cash balances also included in the title insurance and services segment

 

 

(3.8

)

 

 

$

(147.1

)