v3.26.1
SUBSEQUENT EVENTS (Details)
$ / shares in Units, $ in Thousands, $ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Aug. 04, 2026
$ / shares
Jul. 31, 2026
USD ($)
Jul. 31, 2026
AUD ($)
Jun. 09, 2026
USD ($)
Nov. 18, 2025
USD ($)
executive
$ / shares
shares
Feb. 20, 2024
USD ($)
$ / shares
shares
Jun. 30, 2026
USD ($)
$ / shares
shares
Mar. 31, 2026
USD ($)
$ / shares
shares
Jun. 30, 2026
USD ($)
Sep. 30, 2025
USD ($)
executive
dividend
$ / shares
shares
Sep. 30, 2024
USD ($)
Sep. 30, 2023
USD ($)
Sep. 30, 2022
USD ($)
Jul. 31, 2026
AUD ($)
Subsequent Event [Line Items]                            
Number of quarterly dividends | dividend                   3        
Common stock, dividends declared (in dollars per share) | $ / shares         $ 0.22                  
Accumulated other comprehensive income (loss), foreign currency translation adjustment, net of tax                   $ (6,569) $ 10,137      
Acquisition costs                   8,945        
Restructuring charges                     41,309 $ 92,468    
Provision (benefit) on income taxes of discontinued operations                   13,264 256 (42,880)    
Repayments of Long-term Debt                   178,524 167,367 158,017    
Stock repurchase program, remaining authorized repurchase amount                   $ 298,013        
Stock repurchased during period (in shares) | shares           1,500,000       1,897,182        
Stock repurchased during period           $ 98,250       $ 134,680        
Shares acquired, average cost per share (in dollars per share) | $ / shares           $ 65.50       $ 70.99        
Excise tax price                   $ 1,329        
Consumer And Professional Products                            
Subsequent Event [Line Items]                            
Restructuring charges                     41,309 92,468    
Non-cash charges               $ 19,867     23,763 58,932    
Payments for restructuring                     17,546 33,536    
Consumer And Professional Products | Personnel related costs                            
Subsequent Event [Line Items]                            
Payments for restructuring               6,046     $ 5,856 16,772    
Consumer And Professional Products | Intangible Asset Impairments                            
Subsequent Event [Line Items]                            
Non-cash charges               6,609            
Consumer And Professional Products | Inventory Write-down                            
Subsequent Event [Line Items]                            
Non-cash charges               5,925            
Global Sourcing Strategy Expansion | Consumer And Professional Products                            
Subsequent Event [Line Items]                            
Restructuring charges               25,913            
Global Sourcing Strategy Expansion | Consumer And Professional Products | Fixed Asset Write-down Charges                            
Subsequent Event [Line Items]                            
Non-cash charges               $ 7,333            
O 2026 Q1 Dividends                            
Subsequent Event [Line Items]                            
Common stock, dividends declared (in dollars per share) | $ / shares                   $ 0.22        
O 2026 Q2 Dividends                            
Subsequent Event [Line Items]                            
Common stock, dividends declared (in dollars per share) | $ / shares                   0.22        
O 2026 Q3 Dividends                            
Subsequent Event [Line Items]                            
Common stock, dividends declared (in dollars per share) | $ / shares                   $ 0.22        
O 2026 Q4 Dividends                            
Subsequent Event [Line Items]                            
Common stock, dividends declared (in dollars per share) | $ / shares $ 0.22                          
Australian Dollar Contracts | Designated as hedging instrument                            
Subsequent Event [Line Items]                            
Derivative, notional amount                   $ 290,000        
Contracts weighted average rate price (in dollars per share) | $ / shares                   $ 0.70        
Accumulated other comprehensive income (loss), foreign currency translation adjustment, before tax                   $ 2,795        
Term Loan B due 2029 | Term Loan                            
Subsequent Event [Line Items]                            
Debt instrument, periodic payment, principal                 $ 2,000          
Repayments of debt                       325,000 $ 325,000  
Write of unamortized debt issuance costs                 3,268          
Write off of deferred debt issuance cost, original issuer discount                 361     $ 51 $ 721  
Principal repayments of long term debt                 6,000          
Repayments of Long-term Debt                 443,000          
Discontinued Operations, Disposed of by Sale | AMES North America                            
Subsequent Event [Line Items]                            
Proceeds from organization of joint venture       $ 100,000                    
Notes issued       161,100                    
Equity method investments       $ 118,600                    
PIK interest rate       10.00%                    
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax                   $ 26,603        
Discontinued Operations, Disposed of by Sale | AMES’ U.S., Canada, Australia, and U.K                            
Subsequent Event [Line Items]                            
Provision (benefit) on income taxes of discontinued operations                 $ (4,092)          
Discontinued Operations, Held-for-sale | AMES Australasia business                            
Subsequent Event [Line Items]                            
Proceeds from organization of joint venture   $ 180,910 $ 258,000                      
Notes issued   48,593 $ 69,300                      
Equity method investments   20,896                       $ 29,800
Equity method investment, realized gain   123,000                        
Equity method investment, realized gain, net of tax   $ 112,000                        
Veritage Brands | Discontinued Operations, Disposed of by Sale | AMES North America                            
Subsequent Event [Line Items]                            
Equity method investment, ownership percentage       43.00%                    
Veritage Brands | Discontinued Operations, Disposed of by Sale | AMES North America | ONCAP Management Partners, L.P.                            
Subsequent Event [Line Items]                            
Equity method investment, ownership percentage       57.00%                    
Griffon Joint Venture | Discontinued Operations, Held-for-sale | AMES Australasia business                            
Subsequent Event [Line Items]                            
Equity method investment, ownership percentage   49.00%                       49.00%
Griffon Joint Venture | Discontinued Operations, Held-for-sale | AMES Australasia business | Investment Group, including AMES Australasia Management                            
Subsequent Event [Line Items]                            
Equity method investment, ownership percentage   51.00%                       51.00%
Restricted Stock and Restricted Stock Units                            
Subsequent Event [Line Items]                            
Instruments grants in period (in shares) | shares                   579,858        
Share-based payment award, award vesting period                   3 years        
Equity instruments other than options, granted in period, fair value         $ 15,073                  
Granted (in dollars per share) | $ / shares         $ 85.09                  
Restricted Stock and Restricted Stock Units | Director                            
Subsequent Event [Line Items]                            
Instruments grants in period (in shares) | shares                   15,940        
Share-based payment award, award vesting period                   1 year        
Equity instruments other than options, granted in period, fair value                   $ 1,100        
Granted (in dollars per share) | $ / shares                   $ 69.03        
Restricted Stock and Restricted Stock Units, Subject To Performance Conditions                            
Subsequent Event [Line Items]                            
Instruments grants in period (in shares) | shares         147,141                  
Restricted Stock and Restricted Stock Units, Subject To Performance Conditions | Executive Officer and Key Employees                            
Subsequent Event [Line Items]                            
Number of recipients of stock-based compensation award | executive         29                  
Equity instruments other than options, granted in period, fair value         $ 9,855                  
Granted (in dollars per share) | $ / shares         $ 66.86                  
Restricted Stock and Restricted Stock Units, Subject To Performance Conditions | Director                            
Subsequent Event [Line Items]                            
Instruments grants in period (in shares) | shares               13,400            
Equity instruments other than options, granted in period, fair value               $ 1,200            
Granted (in dollars per share) | $ / shares               $ 89.52            
Restricted Stock and Restricted Stock Units, Subject To Performance Conditions | Executive Officer                            
Subsequent Event [Line Items]                            
Instruments grants in period (in shares) | shares             5,401              
Equity instruments other than options, granted in period, fair value             $ 500              
Granted (in dollars per share) | $ / shares             $ 92.58              
Restricted Stock, Subject to Performance Conditions | Executive Officer and Key Employees                            
Subsequent Event [Line Items]                            
Instruments grants in period (in shares) | shares                   137,479        
Restricted Stock, Subject to Performance Conditions | Senior Executives                            
Subsequent Event [Line Items]                            
Instruments grants in period (in shares) | shares         531,456         436,947        
Number of recipients of stock-based compensation award | executive         4         4        
Share-based payment award, award vesting period         36 months         36 months        
Equity instruments other than options, granted in period, fair value                   $ 12,372        
Granted (in dollars per share) | $ / shares                   $ 84.95        
Post-vesting holding period         2 years         2 years        
Target number of shares to be vested if performance condition is attained (in shares) | shares         177,152                  
Restricted Stock, Subject to Performance Conditions | Senior Executives | Minimum                            
Subsequent Event [Line Items]                            
Number of shares to be vested if performance condition is attained (in shares) | shares         88,578         72,827        
Target number of shares to be vested if performance condition is attained (in shares) | shares                   145,649        
Restricted Stock, Subject to Performance Conditions | Senior Executives | Maximum                            
Subsequent Event [Line Items]                            
Number of shares to be vested if performance condition is attained (in shares) | shares         531,456         436,947        
Restricted Stock, Subject to Performance Conditions | Executives and Key Employees                            
Subsequent Event [Line Items]                            
Share-based payment award, award vesting period         36 months                  
Restricted Stock, Subject to Performance Conditions | Director                            
Subsequent Event [Line Items]                            
Share-based payment award, award vesting period               1 year            
Restricted Stock, Subject to Performance Conditions | Executive Officer                            
Subsequent Event [Line Items]                            
Share-based payment award, award vesting period             60 months