Equity (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions |
3 Months Ended | 6 Months Ended | ||||||
---|---|---|---|---|---|---|---|---|
Mar. 31, 2025 |
Dec. 31, 2024 |
Sep. 30, 2024 |
Mar. 31, 2024 |
Dec. 31, 2023 |
Mar. 31, 2025 |
Mar. 31, 2024 |
Jan. 26, 2018 |
|
Equity [Abstract] | ||||||||
Share repurchase authorization | 10.0 | |||||||
Treasury shares repurchased (in shares) | 1.9 | |||||||
Treasury shares repurchased (in usd) | $ 35.2 | $ 30.1 | $ 15.4 | $ 15.5 | ||||
Share repurchase authorization, remaining | 1.1 | 1.1 | ||||||
Dividends declared | $ 14.7 | |||||||
Dividends to common shareholders | 15.2 | $ 15.8 | ||||||
Dividends declared (per share) | $ 0.15 | $ 0.15 | $ 0.15 | |||||
Dividends declared (per share) | $ 0.15 | $ 0.15 | $ 0.15 | |||||
us-gaap_TreasuryStockValueAcquiredCostMethodlessexcisetax | $ 65.7 |