v3.26.3
Summary of Significant Accounting Policies (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Apr. 30, 2026
Apr. 30, 2025
Jul. 31, 2026
Jul. 31, 2025
Jul. 31, 2024
Collaborative Arrangement and Arrangement Other than Collaborative          
Common shares repurchased, value     $ 35.8 $ 35.0  
Foreign currency transaction losses     2.3 2.5 $ 1.7
Cost of sales     2,539.7 2,404.7 2,311.9
Accounts receivable, sale     117.3 86.1  
Loss on sales of receivables     5.0 4.1  
Proceeds from sale of other receivables     $ 112.3 $ 82.0  
LIFO inventory (as a percent)     33.60% 34.40%  
Excess of FIFO over LIFO inventory     $ 61.5 $ 60.3  
Depreciation     87.1 85.6 82.8
Asset, impairment loss     0.0 0.0  
Loss on impairment of intangible assets     $ 0.0 $ 62.0 0.0
Foreign currency forward contracts          
Collaborative Arrangement and Arrangement Other than Collaborative          
Derivative instrument term (in months)     15 months    
Univercells Technologies          
Collaborative Arrangement and Arrangement Other than Collaborative          
Loss on impairment of intangible assets     $ 46.6    
Life Sciences Segment          
Collaborative Arrangement and Arrangement Other than Collaborative          
Loss on impairment of intangible assets $ 62.0 $ 62.0      
Life Sciences Segment | Univercells Technologies          
Collaborative Arrangement and Arrangement Other than Collaborative          
Loss on impairment of intangible assets   46.6      
Non-compete agreements          
Collaborative Arrangement and Arrangement Other than Collaborative          
Finite lived intangible asset estimated useful life (in years)     3 years 2 months 12 days 2 years 10 months 24 days  
Non-compete agreements | Life Sciences Segment          
Collaborative Arrangement and Arrangement Other than Collaborative          
Loss on impairment of intangible assets   0.2      
Customer relationships          
Collaborative Arrangement and Arrangement Other than Collaborative          
Finite lived intangible asset estimated useful life (in years)     12 years 1 month 6 days 8 years 6 months  
Customer relationships | Life Sciences Segment          
Collaborative Arrangement and Arrangement Other than Collaborative          
Loss on impairment of intangible assets   1.0      
Trademarks          
Collaborative Arrangement and Arrangement Other than Collaborative          
Finite lived intangible asset estimated useful life (in years)     9 years 6 months 6 years 8 months 12 days  
Trademarks | Life Sciences Segment          
Collaborative Arrangement and Arrangement Other than Collaborative          
Loss on impairment of intangible assets   7.7      
Minimum          
Collaborative Arrangement and Arrangement Other than Collaborative          
Capitalization of direct cost, amortization period (in years)     2 years    
Minimum | Patents and technology          
Collaborative Arrangement and Arrangement Other than Collaborative          
Finite lived intangible asset estimated useful life (in years)     15 months    
Minimum | Non-compete agreements          
Collaborative Arrangement and Arrangement Other than Collaborative          
Finite lived intangible asset estimated useful life (in years)     15 months    
Minimum | Customer relationships          
Collaborative Arrangement and Arrangement Other than Collaborative          
Finite lived intangible asset estimated useful life (in years)     15 months    
Minimum | Trademarks          
Collaborative Arrangement and Arrangement Other than Collaborative          
Finite lived intangible asset estimated useful life (in years)     15 months    
Minimum | Building and Building Improvements          
Collaborative Arrangement and Arrangement Other than Collaborative          
Property, plant and equipment, useful life (in years)     3 years    
Minimum | Machinery and equipment          
Collaborative Arrangement and Arrangement Other than Collaborative          
Property, plant and equipment, useful life (in years)     3 years    
Minimum | Computer software          
Collaborative Arrangement and Arrangement Other than Collaborative          
Property, plant and equipment, useful life (in years)     2 years    
Maximum          
Collaborative Arrangement and Arrangement Other than Collaborative          
Capitalization of direct cost, amortization period (in years)     10 years    
Maximum | Patents and technology          
Collaborative Arrangement and Arrangement Other than Collaborative          
Finite lived intangible asset estimated useful life (in years)     22 years    
Maximum | Non-compete agreements          
Collaborative Arrangement and Arrangement Other than Collaborative          
Finite lived intangible asset estimated useful life (in years)     22 years    
Maximum | Customer relationships          
Collaborative Arrangement and Arrangement Other than Collaborative          
Finite lived intangible asset estimated useful life (in years)     22 years    
Maximum | Trademarks          
Collaborative Arrangement and Arrangement Other than Collaborative          
Finite lived intangible asset estimated useful life (in years)     22 years    
Maximum | Building and Building Improvements          
Collaborative Arrangement and Arrangement Other than Collaborative          
Property, plant and equipment, useful life (in years)     50 years    
Maximum | Machinery and equipment          
Collaborative Arrangement and Arrangement Other than Collaborative          
Property, plant and equipment, useful life (in years)     13 years    
Maximum | Computer software          
Collaborative Arrangement and Arrangement Other than Collaborative          
Property, plant and equipment, useful life (in years)     10 years    
Shipping and Handling          
Collaborative Arrangement and Arrangement Other than Collaborative          
Cost of sales     $ 103.4 $ 95.3 $ 91.5
Solaris          
Collaborative Arrangement and Arrangement Other than Collaborative          
Loss on impairment of intangible assets     $ 15.4    
Solaris | Life Sciences Segment          
Collaborative Arrangement and Arrangement Other than Collaborative          
Loss on impairment of intangible assets   $ 15.4