Originations of Loans Held-for-sale

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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.

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Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

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Amortized cost of financing receivable with payment default in current period and modified within previous 12 months preceding payment default for debtor experiencing financial difficulty.

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The gains (losses) included in earnings that represent the difference between the sale price and the carrying value of loans and leases that were sold during the reporting period. This element refers to the gain (loss) and not to the cash proceeds of the sales. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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The cash inflow resulting from the sale of loans classified as held-for-sale, including proceeds from loans sold through mortgage securitization.

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LOANS AND LEASES, NET - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024	Sep. 30, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held for sale			$ 1,377,073,000	$ 933,786,000
Transaction costs			1,150,000,000	969,000,000.0
Secondary market revenue			19,800,000	1,400,000
Loans and leases	$ 4,464,870,000		4,464,870,000		$ 4,075,195,000
Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	3,375,453,000		3,375,453,000		3,042,276,000
Pass \| Asset Pledged as Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	117,500,000		117,500,000		105,100,000
Consumer finance portfolio segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	246,200,000		246,200,000		248,800,000
Tax services loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	56,000,000.0		56,000,000.0		$ 8,800,000
National Lending \| Commercial Finance and Consumer Finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Originated loans held for sale			1,380,000,000	933,800,000
National Lending \| Commercial finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
TDRs subsequent default, recorded investment			6,100,000	0
National Lending \| Commercial finance \| Term Extensions and Reduced Payments
Accounts, Notes, Loans and Financing Receivable [Line Items]
TDRs subsequent default, recorded investment	$ 5,900,000	$ 1,600,000	$ 9,100,000	$ 1,600,000