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Other Assets (Capital Contributions Made to Loan Origination Partners) (Details) - Loan Originators $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($)
Other Assets [Line Items]
Equity method investments	$ 30.4
Impairment charges	65.3
Company’s residential whole loans at carrying value are serviced by entities the Company has an investment in	738.4
Preferred Stock
Other Assets [Line Items]
Equity method investments	$ 82.1

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Loans Serviced Through Equity Investment Ventures

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This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment.

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