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Credit Facilities - Narrative (Details) - USD ($) $ in Millions |  |  | 3 Months Ended
--- | --- | --- | ---
Mar. 14, 2022 | Feb. 03, 2022 | Mar. 31, 2022 | Mar. 31, 2021
Debt Instrument [Line Items] |  |  |  |
Proceeds from issuance of warehouse financing debt |  |  | $ 215 | $ 217
One Month | Letter of Credit | Short Term Loan Facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum borrowing capacity |  | $ 550 |  |
Maximum borrowing duration |  | 1 month |  |
Proceeds from issuance of warehouse financing debt | $ 400 |  |  |
One Month | Letter of Credit | Short Term Loan Facility | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Basis spread on variable rate |  | 1.10% |  |
6 Months | Letter of Credit | Short Term Loan Facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum borrowing capacity |  | $ 150 |  |
Maximum borrowing duration |  | 6 months |  |
Proceeds from issuance of warehouse financing debt | $ 0 |  |  |
6 Months | Letter of Credit | Short Term Loan Facility | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Basis spread on variable rate |  | 1.10% |  |
Thirty Days | Letter of Credit | Short Term Loan Facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum borrowing duration | 30 days | 30 days |  |

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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3255-108585 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(f)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 + Details
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