Derivatives and Hedging Activity - Schedule of Non-Designated Derivatives (Details) € in Thousands, £ in Thousands, SFr in Thousands, $ in Thousands, $ in Thousands	Mar. 31, 2024 EUR (€) contract	Mar. 31, 2024 GBP (£) contract	Mar. 31, 2024 AUD ($) contract	Mar. 31, 2024 CHF (SFr) contract	Mar. 31, 2024 USD ($) contract
Derivatives
Number of Contracts	700	700	700	700	700
Foreign exchange contracts | EUR | Long
Derivatives
Number of Contracts	26	26	26	26	26
Aggregate Notional Amount | €	€ 399,300
Foreign exchange contracts | EUR | Short
Derivatives
Number of Contracts	162	162	162	162	162
Aggregate Notional Amount | €	€ 838,898
Foreign exchange contracts | GBP | Long
Derivatives
Number of Contracts	15	15	15	15	15
Aggregate Notional Amount | £		£ 68,963
Foreign exchange contracts | GBP | Short
Derivatives
Number of Contracts	209	209	209	209	209
Aggregate Notional Amount | £		£ 552,574
Foreign exchange contracts | AUD | Long
Derivatives
Number of Contracts	10	10	10	10	10
Aggregate Notional Amount | $			$ 819,763
Foreign exchange contracts | AUD | Short
Derivatives
Number of Contracts	140	140	140	140	140
Aggregate Notional Amount | $			$ 1,620,052
Foreign exchange contracts | CHF | Short
Derivatives
Number of Contracts	65	65	65	65	65
Aggregate Notional Amount | SFr				SFr 20,900
Interest rate swaps – Paying fixed rates | USD
Derivatives
Number of Contracts	60	60	60	60	60
Aggregate Notional Amount | $					$ 4,524,605
Interest rate swaps – Receiving fixed rates | USD
Derivatives
Number of Contracts	4	4	4	4	4
Aggregate Notional Amount | $					$ 1,592,500
Interest rate caps | GBP
Derivatives
Number of Contracts	1	1	1	1	1
Aggregate Notional Amount | £		£ 61,000
Interest rate caps | USD
Derivatives
Number of Contracts	4	4	4	4	4
Aggregate Notional Amount | $					$ 624,332
Credit instruments | USD
Derivatives
Number of Contracts	3	3	3	3	3
Aggregate Notional Amount | $					$ 49,000
Interest rate swap guarantees | USD
Derivatives
Number of Contracts	1	1	1	1	1
Aggregate Notional Amount | $					$ 98,925