Reverse Mortgages - Narrative (Details) loan in Thousands, $ in Millions		3 Months Ended	6 Months Ended
	Apr. 30, 2026 loan	Jun. 30, 2026 USD ($)	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Mar. 31, 2026 USD ($)	Dec. 31, 2025 USD ($)	Mar. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Held For Sale, Reverse Mortgages, Unpaid Principal						$ 9,333.0
HMBS-related borrowings, at fair value		$ (3,610.9)	$ (3,610.9)	$ (10,253.1)	$ (9,437.4)	(9,611.7)	$ (10,587.6)	$ (10,872.1)
Reverse loans held for sale pooled into Home Equity Conversion Mortgage-Backed Securities (HMBS), at fair value		0.0	0.0		$ 9,596.5	9,807.5
HMBS-related borrowings, at fair value		5,503.1	(5,503.1)	$ 0.0
Finance of America Reverse LLC
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number Of Reverse Mortgage Servicing Rights Sold, Number Of Loans \| loan	20
Securitized Assets Sold		5,600.0	5,600.0
Loans Held For Sale, Reverse Mortgages, Unpaid Principal		5,200.0	5,200.0
Reverse MSR, Net		70.0	70.0
HMBS-related borrowings, at fair value		5,500.0
HECM Loans - Securitized, Pledged To HMBS-Related Borrowings
Accounts, Notes, Loans and Financing Receivable [Line Items]
Reverse loans held for sale pooled into Home Equity Conversion Mortgage-Backed Securities (HMBS), at fair value						9,703.1
New HECM Loan Originations And HECM Loan Tails - Unsecuritized
Accounts, Notes, Loans and Financing Receivable [Line Items]
Reverse loans held for sale pooled into Home Equity Conversion Mortgage-Backed Securities (HMBS), at fair value						$ 104.4
New HECM Loan Originations And HECM Loan Tails - Unsecuritized \| Finance of America Reverse LLC
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Held For Sale Reverse Mortgages Sold		$ 57.0	$ 57.0