Leases (Maturities) (Details) - USD ($) $ in Millions	9 Months Ended
Apr. 30, 2020	Jul. 31, 2019
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
Remainder of 2020	$ 7.2
2021	23.4
2022	15.3
2023	9.0
2024	5.8
Thereafter	17.8
Total future lease payments	78.5
Less imputed interest	7.1
Present value of future lease payments	71.4
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2020		$ 24.0
2021		17.5
2022		11.3
2023		6.4
2024		4.6
Thereafter		19.0
Total future lease payments		$ 82.8
Right-of-use lease assets obtained in exchange for new lease liabilities	$ 23.3

Amount of lessee's undiscounted obligation for lease payments for operating lease.

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Amount of lessee's undiscounted obligation for lease payments for operating lease, due in second fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments for operating lease having an initial or remaining lease term in excess of one year due in remainder of fiscal year following latest fiscal year.

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Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of increase in right-of-use asset obtained in exchange for operating lease liability.

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