Derivative Instruments and Hedging Activities - Narrative (Details) - USD ($) |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2024 |
Jun. 30, 2023 |
Jun. 30, 2024 |
Jun. 30, 2023 |
Mar. 31, 2024 |
|
| Derivative [Line Items] | |||||
| Hedge percentage for foreign exchange transactional exposures, minimum | 70.00% | ||||
| Hedge percentage for foreign exchange transactional exposures, maximum | 90.00% | ||||
| Interest rate swaps | |||||
| Derivative [Line Items] | |||||
| Derivative, notional amount | $ 600,000,000 | ||||
| Net Investment Hedging | |||||
| Derivative [Line Items] | |||||
| Pre-tax gains (losses) related to net investment hedges reclassified from other comprehensive income | $ 0 | $ 0 | $ 0 | $ 0 | |