Derivatives and Hedging Activity - Designated and Non-Designated Hedges (Details) € in Thousands, £ in Thousands, kr in Thousands, SFr in Thousands, $ in Thousands, $ in Thousands	Jun. 30, 2026 USD ($) contract	Jun. 30, 2026 EUR (€) contract	Jun. 30, 2026 GBP (£) contract	Jun. 30, 2026 AUD ($) contract	Jun. 30, 2026 CHF (SFr) contract	Jun. 30, 2026 SEK (kr) contract
Derivatives
Number of Contracts	556	556	556	556	556	556
Foreign exchange contracts \| Long \| EUR
Derivatives
Number of Contracts	8	8	8	8	8	8
Aggregate Notional Amount \| €		€ 48,328
Foreign exchange contracts \| Long \| GBP
Derivatives
Number of Contracts	4	4	4	4	4	4
Aggregate Notional Amount \| £			£ 2,322
Foreign exchange contracts \| Long \| AUD
Derivatives
Number of Contracts	3	3	3	3	3	3
Aggregate Notional Amount \| $				$ 403,454
Foreign exchange contracts \| Short \| EUR
Derivatives
Number of Contracts	166	166	166	166	166	166
Aggregate Notional Amount \| €		€ 482,404
Foreign exchange contracts \| Short \| GBP
Derivatives
Number of Contracts	240	240	240	240	240	240
Aggregate Notional Amount \| £			£ 436,065
Foreign exchange contracts \| Short \| AUD
Derivatives
Number of Contracts	55	55	55	55	55	55
Aggregate Notional Amount \| $				$ 1,233,452
Foreign exchange contracts \| Short \| CHF
Derivatives
Number of Contracts	4	4	4	4	4	4
Aggregate Notional Amount \| SFr					SFr 11,243
Foreign exchange contracts \| Short \| SEK
Derivatives
Number of Contracts	32	32	32	32	32	32
Aggregate Notional Amount \| kr						kr 355,800
Interest rate swaps – Paying fixed rates \| USD
Derivatives
Number of Contracts	25	25	25	25	25	25
Aggregate Notional Amount \| $	$ 1,928,695
Interest rate swaps – Receiving fixed rates \| USD
Derivatives
Number of Contracts	9	9	9	9	9	9
Aggregate Notional Amount \| $	$ 3,913,380
Interest rate futures \| USD
Derivatives
Number of Contracts	6	6	6	6	6	6
Aggregate Notional Amount \| $	$ 46,700
Interest rate caps \| USD
Derivatives
Number of Contracts	2	2	2	2	2	2
Aggregate Notional Amount \| $	$ 469,500
Credit instruments \| USD
Derivatives
Number of Contracts	2	2	2	2	2	2
Aggregate Notional Amount \| $	$ 60,000