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Financial Instruments with Off-Balance Sheet Risk and Concentration of Risk (Details) - Geographic Concentration Risk - Title Insurance Premiums	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
California
Concentration Risk [Line Items]
Concentration risk percentage	14.60%	15.20%	14.30%
Texas
Concentration Risk [Line Items]
Concentration risk percentage	13.00%	12.30%	13.80%
Florida
Concentration Risk [Line Items]
Concentration risk percentage	9.30%	8.60%	9.20%
Pennsylvania
Concentration Risk [Line Items]
Concentration risk percentage	5.10%	4.80%	4.70%
Illinois
Concentration Risk [Line Items]
Concentration risk percentage	5.10%	5.00%	5.10%

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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