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Pay vs Performance Disclosure - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Apr. 30, 2024
Jan. 31, 2024
Apr. 30, 2023
Jan. 31, 2023
Apr. 30, 2024
Apr. 30, 2023
Pay vs Performance Disclosure            
Net income $ 88.9 $ 81.2 $ 39.8 $ 84.6 $ 170.1 $ 124.4