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v3.20.2

Debt (Schedule of Additional Information Related to Debt Instruments) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Revolving Secured Line of Credit [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum outstanding balance | $ 287.7 | $ 193.3 | $ 296.6 | $ 282.9
Average outstanding balance | 124.9 | 71.1 | 119.7 | 80.1
Warehouse Facility II [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum outstanding balance | 201.0 | 201.0 | 201.0 | 201.0
Average outstanding balance | 161.5 | 126.7 | 127.8 | 102.8
Warehouse Facility IV [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum outstanding balance | 0.0 | 0.0 | 0.0 | 100.0
Average outstanding balance | 0.0 | 0.0 | 0.0 | 1.5
Warehouse Facility V [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum outstanding balance | 75.0 | 35.0 | 75.0 | 35.0
Average outstanding balance | 17.9 | 3.4 | 25.5 | 1.2
Warehouse Facility VI [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum outstanding balance | 50.0 | 0.0 | 50.0 | 0.0
Average outstanding balance | 50.0 | 0.0 | 20.3 | 0.0
Warehouse Facility VII [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum outstanding balance | 125.0 | 50.0 | 125.0 | 101.5
Average outstanding balance | 102.5 | 23.9 | 75.0 | 9.4
Warehouse Facility VIII [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum outstanding balance | 149.0 | 75.0 | 149.0 | 75.0
Average outstanding balance | $ 35.6 | $ 12.7 | $ 37.7 | $ 12.7

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