Summary of Significant Accounting Policies (Details)	12 Months Ended
	Jul. 31, 2020 USD ($)	Jul. 31, 2019 USD ($)	Jul. 31, 2018 USD ($)	Jul. 31, 2020 EUR (€)	Aug. 01, 2019 USD ($)
Collaborative Arrangements and Non-collaborative Arrangement Transactions
Foreign currency transaction losses	$ 4,700,000	$ 4,900,000	$ 7,400,000
Number of days considered to review for collectability	90 days
Percentage of LIFO inventory	27.60%	31.30%		27.60%
Excess of FIFO over LIFO inventory	$ 39,200,000	$ 39,800,000
Depreciation	79,300,000	73,500,000	71,100,000
Asset impairment charges	0	0	0
Cost of sales	1,710,200,000	1,896,600,000	1,798,400,000
Notional Amounts	$ 82,000,000.0	84,000,000.0
Accounting Standards Update	us-gaap:AccountingStandardsUpdate201602Member
Assets	$ 2,244,600,000	2,142,600,000
Liabilities	$ 1,240,800,000	1,239,900,000
Adjustment
Collaborative Arrangements and Non-collaborative Arrangement Transactions
Assets					$ 71,500,000
Liabilities					$ 71,500,000
Minimum
Collaborative Arrangements and Non-collaborative Arrangement Transactions
Capitalization of direct cost, amortization period in years	5 years
Estimated useful lives	5 years
Maximum
Collaborative Arrangements and Non-collaborative Arrangement Transactions
Capitalization of direct cost, amortization period in years	10 years
Estimated useful lives	20 years
Building and Building Improvements | Minimum
Collaborative Arrangements and Non-collaborative Arrangement Transactions
Property, plant and equipment, useful life	10 years
Building and Building Improvements | Maximum
Collaborative Arrangements and Non-collaborative Arrangement Transactions
Property, plant and equipment, useful life	40 years
Machinery and equipment | Minimum
Collaborative Arrangements and Non-collaborative Arrangement Transactions
Property, plant and equipment, useful life	3 years
Machinery and equipment | Maximum
Collaborative Arrangements and Non-collaborative Arrangement Transactions
Property, plant and equipment, useful life	10 years
Software development | Minimum
Collaborative Arrangements and Non-collaborative Arrangement Transactions
Property, plant and equipment, useful life	5 years
Software development | Maximum
Collaborative Arrangements and Non-collaborative Arrangement Transactions
Property, plant and equipment, useful life	7 years
Shipping and handling
Collaborative Arrangements and Non-collaborative Arrangement Transactions
Cost of sales	$ 68,100,000	76,700,000	$ 73,500,000
Net investment hedge
Collaborative Arrangements and Non-collaborative Arrangement Transactions
Notional Amounts	$ 55,800,000	$ 55,800,000
Net investment hedge | Cross-currency swap
Collaborative Arrangements and Non-collaborative Arrangement Transactions
Notional Amounts | €				€ 50,000,000.0