Finance of America Companies Inc. Annual report pursuant to Section 13 and 15(d)

Fair Value - Summary of Performing/Nonperforming HECM securitizations (Details)

Fair Value - Summary of Performing/Nonperforming HECM securitizations (Details) - Non Recourse Debt [Member]	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Weighted average remaining life in years [Member] \| Minimum [Member] \| Performing/Nonperforming HECM securitizations
Fair Value Non Recourse Debt Instruments Measured On Recurring And Nonrecurring Basis Fair Value Measurement [Line Items]
Weighted average remaining life in years	2 months 12 days	2 months 12 days
Weighted average remaining life in years [Member] \| Minimum [Member] \| Securitized Non-Agency Reverse
Fair Value Non Recourse Debt Instruments Measured On Recurring And Nonrecurring Basis Fair Value Measurement [Line Items]
Weighted average remaining life in years	1 year	3 months 18 days
Weighted average remaining life in years [Member] \| Maximum [Member] \| Performing/Nonperforming HECM securitizations
Fair Value Non Recourse Debt Instruments Measured On Recurring And Nonrecurring Basis Fair Value Measurement [Line Items]
Weighted average remaining life in years	9 months 18 days	1 year 6 months
Weighted average remaining life in years [Member] \| Maximum [Member] \| Securitized Non-Agency Reverse
Fair Value Non Recourse Debt Instruments Measured On Recurring And Nonrecurring Basis Fair Value Measurement [Line Items]
Weighted average remaining life in years	2 years 3 months 18 days	2 years 8 months 12 days
Weighted average remaining life in years [Member] \| Weighted Average [Member] \| Performing/Nonperforming HECM securitizations
Fair Value Non Recourse Debt Instruments Measured On Recurring And Nonrecurring Basis Fair Value Measurement [Line Items]
Weighted average remaining life in years	6 months	1 year
Weighted average remaining life in years [Member] \| Weighted Average [Member] \| Securitized Non-Agency Reverse
Fair Value Non Recourse Debt Instruments Measured On Recurring And Nonrecurring Basis Fair Value Measurement [Line Items]
Weighted average remaining life in years	1 year 7 months 6 days	2 years 1 month 6 days
Conditional repayment rate [Member] \| Minimum [Member] \| Performing/Nonperforming HECM securitizations
Fair Value Non Recourse Debt Instruments Measured On Recurring And Nonrecurring Basis Fair Value Measurement [Line Items]
Conditional repayment rate	30.80%	34.30%
Conditional repayment rate [Member] \| Minimum [Member] \| Securitized Non-Agency Reverse
Fair Value Non Recourse Debt Instruments Measured On Recurring And Nonrecurring Basis Fair Value Measurement [Line Items]
Conditional repayment rate	18.40%	19.60%
Conditional repayment rate [Member] \| Maximum [Member] \| Performing/Nonperforming HECM securitizations
Fair Value Non Recourse Debt Instruments Measured On Recurring And Nonrecurring Basis Fair Value Measurement [Line Items]
Conditional repayment rate	54.40%	56.30%
Conditional repayment rate [Member] \| Maximum [Member] \| Securitized Non-Agency Reverse
Fair Value Non Recourse Debt Instruments Measured On Recurring And Nonrecurring Basis Fair Value Measurement [Line Items]
Conditional repayment rate	35.90%	35.80%
Conditional repayment rate [Member] \| Weighted Average [Member] \| Performing/Nonperforming HECM securitizations
Fair Value Non Recourse Debt Instruments Measured On Recurring And Nonrecurring Basis Fair Value Measurement [Line Items]
Conditional repayment rate	43.50%	42.80%
Conditional repayment rate [Member] \| Weighted Average [Member] \| Securitized Non-Agency Reverse
Fair Value Non Recourse Debt Instruments Measured On Recurring And Nonrecurring Basis Fair Value Measurement [Line Items]
Conditional repayment rate	28.20%	23.90%
Discount rate [Member] \| Weighted Average [Member] \| Performing/Nonperforming HECM securitizations
Fair Value Non Recourse Debt Instruments Measured On Recurring And Nonrecurring Basis Fair Value Measurement [Line Items]
Discount rate	2.30%	3.10%
Discount rate [Member] \| Weighted Average [Member] \| Securitized Non-Agency Reverse
Fair Value Non Recourse Debt Instruments Measured On Recurring And Nonrecurring Basis Fair Value Measurement [Line Items]
Discount rate	2.20%	2.20%