Segment Reporting - Additional Information (Details)	3 Months Ended
	Mar. 31, 2025 Segment
Segment Reporting Information [Line Items]
Number of reportable business segments	1
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description	Adjusted pretax operating income (loss) is defined as pretax income (loss) excluding the effects of: (i) net gains (losses) on investments and other financial instruments, except for those investments and other financial instruments attributable to our Mortgage Conduit business and (ii) impairment of other long-lived assets and other non-operating items, if any, such as gains (losses) from the sale of lines of business, acquisition-related income (expenses) and gains (losses) on extinguishment of debt, among others. See Note 4 of Notes to Consolidated Financial Statements in our 2024 Form 10-K for detailed information regarding items excluded from adjusted pretax operating income (loss), including the reasons for their treatment.
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]	srt:ChiefExecutiveOfficerMember