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Derivative Instruments and Hedging Activities - Additional Information (Details) $ in Thousands	12 Months Ended
	Jun. 30, 2026 USD ($) counterparty derivative_instrument	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)
Derivative [Line Items]
Reclassifications to interest expense	$ (11,640)	$ 5,490	$ (20,197)
Amount of gain reclassified from accumulated other comprehensive income (loss) to interest expense	$ 169,030	189,533	186,274
Derivative liability, number of instruments held \| counterparty	0
Financial collateral posted	$ 0	4,700
Income Statement Location: us-gaap:InterestAndDividendIncomeOperating
Derivative [Line Items]
Estimated cash flow hedge gain (loss) to be reclassified in next twelve months	(445)
Amount of loss reclassified from accumulated other comprehensive income to interest income	(202)
Income Statement Location: us-gaap:InterestExpenseOperating
Derivative [Line Items]
Estimated cash flow hedge gain (loss) to be reclassified in next twelve months	(3,200)
Credit Risk Contract
Derivative [Line Items]
Pipeline of loans held-for-sale	19,100	11,100
Interest rate contracts \| Reclassification out of Accumulated Other Comprehensive Income \| Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest
Derivative [Line Items]
Amount of gain reclassified from accumulated other comprehensive income (loss) to interest expense	14,419	26,470	37,185
Amount of loss reclassified from accumulated other comprehensive income to interest income	$ (202)	$ 57	$ 247
Cash Flow Hedges \| Interest Rate Swaps
Derivative [Line Items]
Number of interest rate derivative instruments held \| derivative_instrument	17
Derivative, notional amount	$ 1,950,000
Cash Flow Hedges \| Interest Rate Floor
Derivative [Line Items]
Number of interest rate derivative instruments held \| derivative_instrument	2
Derivative, notional amount	$ 250,000
Fair Value Hedging \| Interest Rate Swaps
Derivative [Line Items]
Number of interest rate derivative instruments held \| derivative_instrument	5
Derivative, notional amount	$ 675,000