Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2021
Accumulated Other Comprehensive Income (Loss), Net of Tax
Beginning balance	$ 1,133.2	$ 1,137.1	$ 992.9
Other comprehensive income (loss) before reclassifications and tax	25.2	(96.6)
Tax benefit (expense)	2.7	(0.6)
Other comprehensive income (loss) before reclassifications, net of tax	27.9	(97.2)
Reclassifications, before tax	7.8	12.8
Tax (expense) benefit	(2.6)	(3.0)
Reclassifications, net of tax	5.2	9.8
Net other comprehensive income (loss)	33.1	(87.4)	65.8
Ending balance	1,320.7	1,133.2	1,137.1
Total
Accumulated Other Comprehensive Income (Loss), Net of Tax
Beginning balance	(205.6)	(118.2)	(184.0)
Ending balance	(172.5)	(205.6)	(118.2)
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax
Beginning balance	(143.6)	(44.0)
Other comprehensive income (loss) before reclassifications and tax	34.0	(99.6)
Tax benefit (expense)	0.0	0.0
Other comprehensive income (loss) before reclassifications, net of tax	34.0	(99.6)
Reclassifications, before tax	0.0	0.0
Tax (expense) benefit	0.0	0.0
Reclassifications, net of tax	0.0	0.0
Net other comprehensive income (loss)	34.0	(99.6)
Ending balance	(109.6)	(143.6)	(44.0)
Pension Benefits
Accumulated Other Comprehensive Income (Loss), Net of Tax
Beginning balance	(67.5)	(74.7)
Other comprehensive income (loss) before reclassifications and tax	(6.9)	(6.2)
Tax benefit (expense)	2.2	1.4
Other comprehensive income (loss) before reclassifications, net of tax	(4.7)	(4.8)
Reclassifications, before tax	7.5	15.5
Tax (expense) benefit	(2.5)	(3.5)
Reclassifications, net of tax	5.0	12.0
Net other comprehensive income (loss)	0.3	7.2
Ending balance	(67.2)	(67.5)	(74.7)
Pension Benefits | Adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax
Reclassifications, before tax	6.6	3.0
Derivative Financial Instruments
Accumulated Other Comprehensive Income (Loss), Net of Tax
Beginning balance	5.5	0.5
Other comprehensive income (loss) before reclassifications and tax	(1.9)	9.2
Tax benefit (expense)	0.5	(2.0)
Other comprehensive income (loss) before reclassifications, net of tax	(1.4)	7.2
Reclassifications, before tax	0.3	(2.7)
Tax (expense) benefit	(0.1)	0.5
Reclassifications, net of tax	0.2	(2.2)
Net other comprehensive income (loss)	(1.2)	5.0
Ending balance	4.3	5.5	$ 0.5
Accumulated Defined Benefit Plans Adjustment, Foreign Currency Translation Attributable To Parent | Adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax
Reclassifications, before tax	(1.4)	4.9
Net Amortization of Prior Service Cost and Actuarial Losses | Adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax
Other comprehensive income (loss) before reclassifications and tax	$ (2.3)	$ (7.6)