v3.26.3
Business Segment Information - Significant expenses for each segment (Details) - USD ($)
$ in Millions
3 Months Ended
Aug. 31, 2026
Aug. 31, 2025
Business Segment Information    
Sales $ 918.0 $ 739.6
Cost of Sales 741.7 605.9
Selling, General and Administrative 107.0 71.8
Operating Income 72.1 64.9
Gains (Losses) related to sale and exit of businesses, net   0.7
Other expense, net (0.5) (0.1)
Interest expense (16.6) (18.8)
Interest income 0.4 0.3
Income before income taxes 55.4 47.0
Inter-segment Sales    
Business Segment Information    
Sales 38.7 25.4
Total Sales    
Business Segment Information    
Sales 956.7 765.0
Reportable segment, aggregation before corporate and other operating segment    
Business Segment Information    
Sales 918.0 739.6
Cost of Sales   605.4
Cost of Sales 742.4  
Selling, General and Administrative 85.0 63.1
Other Segment Items (2.7) (2.9)
Operating Income 93.3 74.0
Parts Supply    
Business Segment Information    
Sales 414.8 317.8
Cost of Sales   256.5
Cost of Sales 330.4  
Selling, General and Administrative 30.8 23.3
Other Segment Items (1.7) (2.9)
Operating Income 55.3 40.9
Parts Supply | Inter-segment Sales    
Business Segment Information    
Sales 16.9 2.1
Parts Supply | Total Sales    
Business Segment Information    
Sales 431.7 319.9
Repair, Engineering, and Software    
Business Segment Information    
Sales 297.5 226.4
Cost of Sales   177.3
Cost of Sales 239.9  
Selling, General and Administrative 42.6 28.5
Other Segment Items (1.0) 0.6
Operating Income 16.0 20.0
Repair, Engineering, and Software | Inter-segment Sales    
Business Segment Information    
Sales 17.4 22.0
Repair, Engineering, and Software | Total Sales    
Business Segment Information    
Sales 314.9 248.4
Government Solutions    
Business Segment Information    
Sales 138.8 133.9
Cost of Sales   113.4
Cost of Sales 110.5  
Selling, General and Administrative 9.2 7.8
Operating Income 19.1 12.7
Government Solutions | Inter-segment Sales    
Business Segment Information    
Sales 1.8 0.4
Government Solutions | Total Sales    
Business Segment Information    
Sales 140.6 134.3
Legacy Commercial Programs    
Business Segment Information    
Sales 66.9 61.5
Cost of Sales   58.2
Cost of Sales 61.6  
Selling, General and Administrative 2.4 3.5
Other Segment Items   (0.6)
Operating Income 2.9 0.4
Legacy Commercial Programs | Inter-segment Sales    
Business Segment Information    
Sales 2.6 0.9
Legacy Commercial Programs | Total Sales    
Business Segment Information    
Sales 69.5 62.4
Corporate and other    
Business Segment Information    
Operating Income $ (21.2) $ (9.1)