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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LONG-TERM DEBT (Narrative) (Details) - USD ($) $ in Millions		12 Months Ended
	Feb. 09, 2028	Dec. 31, 2025	Feb. 04, 2026	Sep. 30, 2025
Debt Instrument [Line Items]
Subordinated notes, par amount		$ 1,000
Senior Notes Interest Rate 4.70%
Debt Instrument [Line Items]
Senior notes par amount		500
Debt interest rate				4.70%
Subordinated Notes Interest Rate 6.82%
Debt Instrument [Line Items]
Subordinated notes, par amount		$ 500
Subordinated Notes Interest Rate 6.82% \| Subordinated Debt
Debt Instrument [Line Items]
Debt interest rate		6.82%
Annual floating rate basis spread on variable rate		2.83%
Subordinated Notes, Interest Rate 3.25%
Debt Instrument [Line Items]
Subordinated notes, par amount		$ 500
Subordinated Notes, Interest Rate 3.25% \| Subordinated Debt
Debt Instrument [Line Items]
Debt interest rate		3.25%
Subordinated Notes Interest Rate 4.48% \| Subordinated Debt \| Subsequent Event
Debt Instrument [Line Items]
Senior notes par amount			$ 500
Debt interest rate			4.48%
Subordinated Notes Interest Rate 4.48% \| Subordinated Debt \| Forecast \| Subsequent Event
Debt Instrument [Line Items]
Annual floating rate basis spread on variable rate	1.06%