Face (par) amount of debt instrument at time of issuance.

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

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Nominal or face amount used to calculate payments on the derivative asset.

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Amount of lease payments to be received by lessor for operating lease.

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The maximum amount of borrowing capacity under a line of credit that is available as of the balance sheet date for a specific purpose other than for financing goods acquired for inventory or imminent delivery to a customer.

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Amount of increase (decrease) of the credit facility.

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Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Commitments and Contingencies - Schedule of Contractual Obligations (Footnotes) (Detail) - USD ($)	Jan. 29, 2020	Jan. 13, 2020	Dec. 31, 2019	Dec. 31, 2018	Nov. 06, 2018
Debt Instrument [Line Items]
Sublease payments to be received			$ 1,900,000
Loans held for sale, at fair value			215,290,000	$ 990,864,000
Carrying amount			589,294,000	537,926,000
Derivative, notional amount			3,271,250,000	1,814,834,000
6.125% Senior Notes
Debt Instrument [Line Items]
Debt instrument face amount			$ 550,000,000
Stated interest rate			6.125%		6.125%
Warehouse Facility
Debt Instrument [Line Items]
Derivative, notional amount			$ 1,800,000,000
6.125% Senior Notes \| Senior Notes
Debt Instrument [Line Items]
Debt instrument face amount					$ 550,000,000.0
Stated interest rate					6.125%
Carrying amount			$ 540,377,000	537,926,000
Revolving Credit Facility \| Line of Credit
Debt Instrument [Line Items]
Stated interest rate			3.76%
Carrying amount			$ 48,917,000	0
Committed Lines
Debt Instrument [Line Items]
Lines available			1,050,000,000	$ 1,650,000,000
Committed Lines \| Warehouse Facility Due June 17, 2020
Debt Instrument [Line Items]
Lines available			450,000,000
Committed Lines \| Warehouse Facility Due October 9, 2020
Debt Instrument [Line Items]
Lines available			$ 400,000,000
Subsequent Event \| Committed Lines \| Warehouse Facility Due June 17, 2020
Debt Instrument [Line Items]
Lines available		$ 800,000,000.0
Temporary credit increase		$ 350,000,000.0
Subsequent Event \| Committed Lines \| Warehouse Facility Due October 9, 2020
Debt Instrument [Line Items]
Lines available	$ 500,000,000.0
Temporary credit increase	$ 100,000,000.0