Subsequent Events (Details) - CoreVest American Finance Lender LLC - Subsequent Event $ in Millions	Oct. 14, 2019 USD ($)
Subsequent Event [Line Items]
Percent acquired	100.00%
Total consideration	$ 492

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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