Off-balance Sheet, Maximum Advance Obligation of Reverse Mortgages Serviced

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The amount of expense provided in the period for legal costs incurred on or before the balance sheet date pertaining to resolved, pending or threatened litigation, including arbitration and mediation proceedings.

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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.

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- Definition

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

This is the sum of principal amount outstanding for both securitized and unsecuritized loans of all types.

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-Publisher FASB
-Name Accounting Standards Codification
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Commitments and Contingencies - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Loss Contingencies [Line Items]
Legal fees	$ 11	$ 4
Reverse Mortgage Servicing Rights, Excluding Subservicing
Loss Contingencies [Line Items]
UPB	27,014		$ 28,415
Warehouse facilities, net of unamortized debt issuance costs
Loss Contingencies [Line Items]
Unfunded advance obligations	3,005		$ 3,128
Litigation and Regulatory Matters \| Minimum
Loss Contingencies [Line Items]
Estimate of possible loss	14
Litigation and Regulatory Matters \| Maximum
Loss Contingencies [Line Items]
Estimate of possible loss	$ 36