Goodwill and Intangible Assets (Reconciliation of Intangible Assets) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2022	Jan. 31, 2021
Total
Intangible assets, net, beginning balance			$ 61.6
Intangible assets acquired			23.8
Amortization expense	$ (2.4)	$ (2.1)	(4.5)	$ (4.2)
Currency translation			(1.5)
Intangible assets, net, ending balance	79.4		79.4
Customer Relationships
Gross Carrying Amount
Gross carrying amount beginning balance			107.5
Intangible assets acquired			3.2
Amortization expense			0.0
Currency translation			(1.8)
Gross carrying amount ending balance	108.9		108.9
Accumulated Amortization
Accumulated amortization beginning balance			(56.4)
Intangible assets acquired			0.0
Amortization expense			(3.2)
Currency translation			0.7
Accumulated amortization ending balance	(58.9)		(58.9)
Total
Intangible assets, net, beginning balance			51.1
Intangible assets acquired			3.2
Amortization expense			(3.2)
Currency translation			(1.1)
Intangible assets, net, ending balance	50.0		50.0
Patents, trademarks and technology
Gross Carrying Amount
Gross carrying amount beginning balance			24.3
Intangible assets acquired			20.6
Amortization expense			0.0
Currency translation			(0.5)
Gross carrying amount ending balance	44.4		44.4
Accumulated Amortization
Accumulated amortization beginning balance			(13.8)
Intangible assets acquired			0.0
Amortization expense			(1.3)
Currency translation			0.1
Accumulated amortization ending balance	(15.0)		(15.0)
Total
Intangible assets, net, beginning balance			10.5
Intangible assets acquired			20.6
Amortization expense			(1.3)
Currency translation			(0.4)
Intangible assets, net, ending balance	$ 29.4		$ 29.4