v3.26.3
Segment Information (Schedule of Reportable Segment Performance Significant Expenses and Assets) (Detail) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Segment Reporting Information [Line Items]          
Consolidated revenue $ 2,084.6 $ 1,978.9 $ 6,039.9 $ 5,402.5  
Less:          
Personnel costs 597.4 574.9 1,779.9 1,652.7  
Premiums retained by agents 695.6 640.1 1,956.4 1,739.1  
Other operating expenses 343.6 309.2 1,006.1 896.9  
Provision for policy losses 95.1 90.8 260.2 242.8  
Depreciation and amortization 54.7 54.8 162.9 160.3  
Premium taxes 24.2 22.2 67.1 58.8  
Interest 46.4 39.9 134.0 113.1  
Segment income (loss) before income taxes 227.6 247.0 673.3 538.8  
Total assets 17,982.8   17,982.8   $ 16,228.8
Operating Segments          
Segment Reporting Information [Line Items]          
Consolidated revenue 2,084.6 1,978.9 6,039.9 5,402.5  
Less:          
Personnel costs 597.4 [1] 574.9 [2] 1,779.9 [3] 1,652.7 [4]  
Premiums retained by agents 695.6 [1] 640.1 [2] 1,956.4 [3] 1,739.1 [4]  
Other operating expenses 343.6 [1],[5] 309.2 [2],[6] 1,006.1 [3],[7] 896.9 [4],[8]  
Provision for policy losses 95.1 [1] 90.8 [2] 260.2 [3] 242.8 [4]  
Depreciation and amortization 54.7 [1] 54.8 [2] 162.9 [3] 160.3 [4]  
Premium taxes 24.2 [1] 22.2 [2] 67.1 [3] 58.8 [4]  
Interest 46.4 [1] 39.9 [2] 134.0 [3] 113.1 [4]  
Segment income (loss) before income taxes 227.6 [1] 247.0 [2] 673.3 [3] 538.8 [4]  
Total assets 17,982.8 17,610.0 17,982.8 17,610.0  
Segment capital expenditures 42.9 49.0 124.3 148.1  
Operating Segments | Title Insurance and Services          
Segment Reporting Information [Line Items]          
Consolidated revenue 1,972.9 1,835.9 5,719.8 5,043.2  
Less:          
Personnel costs 574.1 [1] 542.9 [2] 1,693.0 [3] 1,550.7 [4]  
Premiums retained by agents 695.6 [1] 640.1 [2] 1,956.4 [3] 1,739.1 [4]  
Other operating expenses 306.4 [1],[5] 275.6 [2],[6] 902.8 [3],[7] 799.8 [4],[8]  
Provision for policy losses 45.3 [1] 42.0 [2] 130.1 [3] 114.9 [4]  
Depreciation and amortization 53.3 [1] 53.5 [2] 158.7 [3] 156.3 [4]  
Premium taxes 22.8 [1] 20.9 [2] 63.4 [3] 55.2 [4]  
Interest 31.3 [1] 24.7 [2] 88.4 [3] 67.5 [4]  
Segment income (loss) before income taxes $ 244.1 [1] $ 236.2 [2] $ 727.0 [3] $ 559.7 [4]  
Pretax margin 12.40% [9] 12.90% [9] 12.70% [9] 11.10% [10]  
Total assets $ 16,836.6 $ 16,625.6 $ 16,836.6 $ 16,625.6  
Segment capital expenditures 41.5 47.4 120.0 143.4  
Operating Segments | Home Warranty          
Segment Reporting Information [Line Items]          
Consolidated revenue 114.7 114.6 338.3 332.6  
Less:          
Personnel costs 22.4 [1] 21.4 [2] 65.4 [3] 62.6 [4]  
Premiums retained by agents 0.0 [1] 0.0 [2] 0.0 [3] 0.0 [4]  
Other operating expenses 28.2 [1],[5] 24.4 [2],[6] 74.8 [3],[7] 68.8 [4],[8]  
Provision for policy losses 50.2 [1] 50.0 [2] 129.1 [3] 130.5 [4]  
Depreciation and amortization 1.3 [1] 1.3 [2] 4.1 [3] 3.9 [4]  
Premium taxes 1.3 [1] 1.3 [2] 3.6 [3] 3.6 [4]  
Interest 0.0 [1] 0.0 [2] 0.0 [3] 0.0 [4]  
Segment income (loss) before income taxes $ 11.3 [1] $ 16.2 [2] $ 61.3 [3] $ 63.2 [4]  
Pretax margin 9.90% [9] 14.10% [9] 18.10% [9] 19.00% [10]  
Total assets $ 452.2 $ 437.0 $ 452.2 $ 437.0  
Segment capital expenditures 1.4 1.6 4.3 4.7  
Operating Segments | Corporate          
Segment Reporting Information [Line Items]          
Consolidated revenue (2.9) 28.4 (18.0) 26.8  
Less:          
Personnel costs 0.8 [1] 10.6 [2] 21.4 [3] 39.4 [4]  
Premiums retained by agents 0.0 [1] 0.0 [2] 0.0 [3] 0.0 [4]  
Other operating expenses 9.6 [1],[5] 9.3 [2],[6] 29.1 [3],[7] 28.4 [4],[8]  
Provision for policy losses (0.6) [1] (1.3) [2] 0.9 [3] (2.6) [4]  
Depreciation and amortization 0.0 [1] 0.0 [2] 0.1 [3] 0.1 [4]  
Premium taxes 0.0 [1] 0.0 [2] 0.0 [3] 0.0 [4]  
Interest 15.2 [1] 15.2 [2] 45.6 [3] 45.6 [4]  
Segment income (loss) before income taxes (27.9) [1] (5.4) [2] (115.1) [3] (84.1) [4]  
Total assets 1,074.2 694.5 1,074.2 694.5  
Eliminations          
Segment Reporting Information [Line Items]          
Consolidated revenue (0.1) 0.0 (0.2) (0.1)  
Less:          
Personnel costs 0.1 [1] 0.0 [2] 0.1 [3] 0.0 [4]  
Premiums retained by agents 0.0 [1] 0.0 [2] 0.0 [3] 0.0 [4]  
Other operating expenses (0.6) [1],[5] (0.1) [2],[6] (0.6) [3],[7] (0.1) [4],[8]  
Provision for policy losses 0.2 [1] 0.1 [2] 0.1 [3] 0.0 [4]  
Depreciation and amortization 0.1 [1] 0.0 [2] 0.0 [3] 0.0 [4]  
Premium taxes 0.1 [1] 0.0 [2] 0.1 [3] 0.0 [4]  
Interest (0.1) [1] 0.0 [2] 0.0 [3] 0.0 [4]  
Segment income (loss) before income taxes 0.1 [1] 0.0 [2] 0.1 [3] 0.0 [4]  
Total assets $ (380.2) [11] $ (147.1) [12] $ (380.2) [11] $ (147.1) [12]  
[1] The significant expense categories and amounts align with segment level information that is regularly provided to the chief operating decision maker.
[2] The significant expense categories and amounts align with segment level information that is regularly provided to the chief operating decision maker.
[3] The significant expense categories and amounts align with segment level information that is regularly provided to the chief operating decision maker.
[4] The significant expense categories and amounts align with segment level information that is regularly provided to the chief operating decision maker.
[5] Other operating expenses for each segment primarily include the following:

Title insurance and services - title and data search expenses, office and occupancy expenses and software expense.

Home warranty - advertising expense, office and occupancy expenses, software expense, delivery and storage expenses.

Corporate - employee benefit expense and certain overhead expenses.
[6] Other operating expenses for each segment primarily include the following:

Title insurance and services - title and data search expenses, office and occupancy expenses and software expense.

Home warranty - advertising expense, office and occupancy expenses, software expense, delivery and storage expenses.

Corporate - employee benefit expense and certain overhead expenses.
[7] Other operating expenses for each segment primarily include the following:

Title insurance and services - title and data search expenses, office and occupancy expenses and software expense.

Home warranty - advertising expense, office and occupancy expenses, software expense, delivery and storage expenses.

Corporate - employee benefit expense and certain overhead expenses.
[8] Other operating expenses for each segment primarily include the following:

Title insurance and services - title and data search expenses, office and occupancy expenses and software expense.

Home warranty - advertising expense, office and occupancy expenses, software expense, delivery and storage expenses.

Corporate - employee benefit expense and certain overhead expenses.
[9] Pretax margin for the corporate segment is not regularly provided to the chief operating decision maker to assess performance.
[10] Pretax margin for the corporate segment is not regularly provided to the chief operating decision maker to assess performance.
[11] 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

)

 
[12] 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

)