Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2020
AOCI Rollforward
Beginning Balance	$ 1,137.1	$ 992.9	$ 892.7
Other comprehensive (loss) income before reclassifications and tax	(96.6)	67.8
Tax benefit (expense)	(0.6)	(9.5)
Other comprehensive (loss) income before reclassifications, net of tax	(97.2)	58.3
Reclassifications, before tax	12.8	9.8
Tax (expense) benefit	(3.0)	(2.3)
Reclassifications, net of tax	9.8	7.5
Net other comprehensive (loss) income	(87.4)	65.8	8.9
Ending Balance	1,133.2	1,137.1	992.9
Total
AOCI Rollforward
Beginning Balance	(118.2)	(184.0)	(192.9)
Ending Balance	(205.6)	(118.2)	(184.0)
Foreign Currency Translation Adjustment
AOCI Rollforward
Beginning Balance	(44.0)	(74.0)
Other comprehensive (loss) income before reclassifications and tax	(99.6)	30.0
Tax benefit (expense)	0.0	0.0
Other comprehensive (loss) income before reclassifications, net of tax	(99.6)	30.0
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 (loss) income	(99.6)	30.0
Ending Balance	(143.6)	(44.0)	(74.0)
Pension Benefits
AOCI Rollforward
Beginning Balance	(74.7)	(110.0)
Other comprehensive (loss) income before reclassifications and tax	(6.2)	36.8
Tax benefit (expense)	1.4	(9.3)
Other comprehensive (loss) income before reclassifications, net of tax	(4.8)	27.5
Reclassifications, before tax	15.5	10.0
Tax (expense) benefit	(3.5)	(2.2)
Reclassifications, net of tax	12.0	7.8
Net other comprehensive (loss) income	7.2	35.3
Ending Balance	(67.5)	(74.7)	(110.0)
Pension Benefits | Adjustments
AOCI Rollforward
Reclassifications, before tax	(3.0)	(2.8)
Pension Benefits, foreign currency translation | Adjustments
AOCI Rollforward
Reclassifications, before tax	(4.9)	1.5
Pension Benefits, net amortization of prior service cost and actuarial losses | Adjustments
AOCI Rollforward
Other comprehensive (loss) income before reclassifications and tax	7.6	8.7
Derivative Financial Instruments
AOCI Rollforward
Beginning Balance	0.5	0.0
Other comprehensive (loss) income before reclassifications and tax	9.2	1.0
Tax benefit (expense)	(2.0)	(0.2)
Other comprehensive (loss) income before reclassifications, net of tax	7.2	0.8
Reclassifications, before tax	(2.7)	(0.2)
Tax (expense) benefit	0.5	(0.1)
Reclassifications, net of tax	(2.2)	(0.3)
Net other comprehensive (loss) income	5.0	0.5
Ending Balance	$ 5.5	$ 0.5	$ 0.0