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Derivative Financial Instruments - Schedule of Notional Amounts of Derivative Contracts Outstanding (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Derivative [Line Items]
Notional amount	$ 6,683,375	$ 6,828,335
Derivative contracts to manage future loan sale execution risk | Interest rate swaps
Derivative [Line Items]
Notional amount	5,428,177	5,638,177
Derivative contracts to manage future loan sale execution risk | Interest rate caps
Derivative [Line Items]
Notional amount	405,000	405,000
Derivative contracts to manage future loan sale execution risk | Home loan pipeline hedges
Derivative [Line Items]
Notional amount	140,000	126,000
Derivative contracts not designed to manage future loan sale execution risk | Interest rate swaps
Derivative [Line Items]
Notional amount	196,823	171,823
Derivative contracts not designed to manage future loan sale execution risk | Interest rate caps
Derivative [Line Items]
Notional amount	405,000	405,000
Derivative contracts not designed to manage future loan sale execution risk | IRLCs
Derivative [Line Items]
Notional amount	$ 108,375	$ 82,335

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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.

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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959

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