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Long-Term Debt - Credit Facility Narratives (Details) - USD ($) |  |  |  | 1 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Mar. 16, 2020 | Feb. 26, 2020 | Nov. 28, 2018 | Jul. 31, 2021 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2020
Line of Credit Facility |  |  |  |  |  |  |
Proceeds from warehouse facilities |  |  |  |  | $ 3,283,534,000 | $ 5,059,288,000 |
Repayments of lines of credit |  |  |  |  | 3,934,565,000 | $ 4,204,840,000 |
Line of Credit | Revolving Credit Facility |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |
Maximum revolving credit | $ 465,000,000.0 | $ 425,000,000.0 | $ 250,000,000.0 |  |  |  |
Long-term debt term (in years) |  |  | 3 years |  |  |  |
Proceeds from warehouse facilities |  |  |  |  | 25,000,000.0 |  |
Repayments of lines of credit |  |  |  |  | $ 25,000,000.0 |  |
Stated interest rate (in percentage) |  |  |  |  | 1.84% |  | 1.94%
Line of Credit | Revolving Credit Facility | Subsequent Event |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |
Repayments of lines of credit |  |  |  | $ 140,000,000.0 |  |  |
LIBOR | Line of Credit | Revolving Credit Facility |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |
Basis spread on variable rate (in percentage) | 1.75% | 1.75% |  |  |  |  |
Interest Rate Option One | LIBOR | Line of Credit | Revolving Credit Facility |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |
Basis spread on variable rate (in percentage) |  |  | 1.00% |  |  |  |
Interest Rate Option Two | Federal Funds Rate | Line of Credit | Revolving Credit Facility |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |
Basis spread on variable rate (in percentage) |  |  | 0.50% |  |  |  |
Interest Rate Option Two | One-month LIBOR | Line of Credit | Revolving Credit Facility |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |
Basis spread on variable rate (in percentage) |  |  | 1.00% |  |  |  |
Interest Rate Option Two | LIBOR | Line of Credit | Revolving Credit Facility |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |
Basis spread on variable rate (in percentage) |  |  | 2.00% |  |  |  |
Minimum | Interest Rate Option One | LIBOR | Line of Credit | Revolving Credit Facility |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |
Basis spread on variable rate (in percentage) |  |  | 0.25% |  |  |  |
Minimum | Interest Rate Option Two | LIBOR | Line of Credit | Revolving Credit Facility |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |
Basis spread on variable rate (in percentage) |  |  | 1.25% |  |  |  |
Maximum | Interest Rate Option One | LIBOR | Line of Credit | Revolving Credit Facility |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |
Basis spread on variable rate (in percentage) |  |  | 1.25% |  |  |  |
Maximum | Interest Rate Option Two | LIBOR | Line of Credit | Revolving Credit Facility |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |
Basis spread on variable rate (in percentage) |  |  | 2.25% |  |  |  |
Weighted Average | Line of Credit | Revolving Credit Facility |  |  |  |  |  |  |
Line of Credit Facility |  |  |  |  |  |  |
Interest rate in the period (in percentage) |  |  |  |  | 1.86% | 2.83% |

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