Indebtedness - Narrative (Details) $ in Millions	6 Months Ended
Jun. 30, 2020 USD ($)
Unsecured senior Notes
Debt Instrument [Line Items]
Maximum percentage redeemable on unsecured debt	40.00%
Unsecured senior Notes
Debt Instrument [Line Items]
Repayments of debt	$ 100
Amount of principal amount outstanding repaid	598
Loss on repurchase of debt	$ 1
Minimum \| Nonrecourse debt–legacy assets
Debt Instrument [Line Items]
Interest rate	0.60%
Minimum \| Secured debt \| HECM securitizations
Debt Instrument [Line Items]
Interest rate	2.30%
Weighted average term	1 year
Maximum \| Nonrecourse debt–legacy assets
Debt Instrument [Line Items]
Interest rate	5.60%
Maximum \| Secured debt \| HECM securitizations
Debt Instrument [Line Items]
Interest rate	6.00%
Weighted average term	3 years

Debt Instrument, Call Date, Weighted Average Term

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- Definition

Debt Instrument, Debt Redemption, Amount Of Principal Redeemed

+ References

No definition available.

+ Details

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- Definition

Maximum percentage redeemable of aggregate principal on unsecured debt with the net proceeds of certain equity offerings at a fixed redemption prices, plus accrued and unpaid interest and additional interest, if any, to the redemption dates, subject to compliance with certain conditions.

+ References

No definition available.

+ Details

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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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

No definition available.

+ Details

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- Definition

Amount of gain (loss) from the difference between the repurchase price of a debt instrument initially issued by the entity and the net carrying amount of the debt at the time of its repurchase.

+ References

No definition available.

+ Details

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- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585

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