Other Assets (Capital Contributions Made to Loan Origination Partners) (Details) - Loan Originators $ in Millions	Sep. 30, 2019 USD ($)
Other Assets [Line Items]
Equity method investments	$ 28.5
Equity investment, convertible notes	25.0
Company’s residential whole loans at carrying value are serviced by entities the Company has an investment in	1,100.0
Preferred Stock
Other Assets [Line Items]
Equity method investments	$ 69.4

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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-Section 50
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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