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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

X

- Definition

Line of Credit Facility, Maximum Borrowing Duration

+ References

No definition available.

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- Definition

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- Definition

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X

- 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

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X

- 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

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