v3.26.1
Acquisitions - Summary of Fair Value of Consideration Transferred for the Merger (Details)
 3 Months Ended
Jun. 01, 2026
USD ($)
$ / shares
shares
Jun. 30, 2026
USD ($)
May 29, 2026
$ / shares
Business Combination, Consideration Transferred, Equity Interest [Line Items]      
Cash Issued to Maximum Aggregate Stock Shares   $ 1,792,592,000  
Fractional Shares | shares 68    
Total Merger Consideration per the Merger Agreement $ 2,110,069,000    
Pre-combination value of replaced Thermon equity awards 11,609,000    
Cash settlement of Thermon equity awards 2,111,000    
Repayment of Thermon indebtedness 141,682,000    
Less: D&O "tail" insurance premium (1,371,000)    
Total preliminary consideration transferred 2,264,100,000    
Mixed Consideration      
Business Combination, Consideration Transferred, Equity Interest [Line Items]      
Total Consideration 1,103,766,000    
Cash Consideration      
Business Combination, Consideration Transferred, Equity Interest [Line Items]      
Total Consideration 157,085,000    
Stock Consideration      
Business Combination, Consideration Transferred, Equity Interest [Line Items]      
Total Consideration 849,150,000    
Thermon Group Holdings, Inc.      
Business Combination, Consideration Transferred, Equity Interest [Line Items]      
Consideration in the form of CECO's Common Stock $ 64    
Consideration received per share | $ / shares $ 79.03   $ 61.14
Total preliminary consideration transferred $ 2,264,100,000    
Thermon Group Holdings, Inc. | Mixed Consideration | Stock Component      
Business Combination, Consideration Transferred, Equity Interest [Line Items]      
Number of Common Stock Shares Issued | shares 17,231,130    
Exchange ratio per Merger Agreement 0.684    
Thermon Group Holdings, Inc. | Mixed Consideration | Cash Component      
Business Combination, Consideration Transferred, Equity Interest [Line Items]      
Number of Common Stock Shares Issued | shares 17,231,130    
Consideration in the form of CECO's Common Stock $ 172,311,000    
Consideration received per share | $ / shares $ 10    
Thermon Group Holdings, Inc. | Cash Consideration      
Business Combination, Consideration Transferred, Equity Interest [Line Items]      
Number of Common Stock Shares Issued | shares 2,142,408    
Consideration received per share | $ / shares $ 63.89    
All-Cash Consideration $ 136,878,000    
Cash Issued to Maximum Aggregate Stock Shares $ 20,207,000    
Thermon Group Holdings, Inc. | Stock Consideration      
Business Combination, Consideration Transferred, Equity Interest [Line Items]      
Number of Common Stock Shares Issued | shares 13,566,156    
Exchange ratio per Merger Agreement 0.811    
CECO Environmental Corp | Mixed Consideration | Stock Component      
Business Combination, Consideration Transferred, Equity Interest [Line Items]      
Number of Common Stock Shares Issued | shares 11,786,093    
Common Stock Closing Price | $ / shares $ 79.03    
Consideration in the form of CECO's Common Stock $ 931,455,000    
CECO Environmental Corp | Stock Consideration      
Business Combination, Consideration Transferred, Equity Interest [Line Items]      
Number of Common Stock Shares Issued | shares 11,002,153    
Common Stock Closing Price | $ / shares $ 79.03    
Less: CECO Common Stock shares due to Maximum Aggregate Stock Shares proration per the Merger Agreement | shares (257,495)    
Number of CECO Common Stock shares to be issued pursuant to the Maximum Aggregate Stock Shares proration per the Merger Agreement | shares 10,744,658