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v3.21.2

Debt (Schedule of Additional Information Related to Debt Instruments) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Revolving Secured Line of Credit [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum outstanding balance | $ 129.4 | $ 296.6 | $ 216.0 | $ 296.6
Average outstanding balance | 11.0 | 148.8 | 39.8 | 117.0
Warehouse Facility II [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum outstanding balance | 201.0 | 201.0 | 201.0 | 201.0
Average outstanding balance | 4.4 | 201.0 | 23.5 | 110.7
Warehouse Facility IV [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum outstanding balance | 0.0 | 0.0 | 0.0 | 0.0
Average outstanding balance | 0.0 | 0.0 | 0.0 | 0.0
Warehouse Facility V [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum outstanding balance | 0.0 | 75.0 | 0.0 | 75.0
Average outstanding balance | 0.0 | 50.5 | 0.0 | 29.4
Warehouse Facility VI [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum outstanding balance | 0.0 | 0.0 | 0.0 | 0.0
Average outstanding balance | 0.0 | 0.0 | 0.0 | 0.0
Warehouse Facility VII [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum outstanding balance | 0.0 | 125.0 | 0.0 | 125.0
Average outstanding balance | 0.0 | 100.5 | 0.0 | 61.1
Warehouse Facility VIII [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum outstanding balance | 0.0 | 149.0 | 0.0 | 149.0
Average outstanding balance | $ 0.0 | $ 69.9 | $ 0.0 | $ 38.7

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