v3.26.1
OPERATING SEGMENTS (Details)
$ in Millions
 3 Months Ended 12 Months Ended
Mar. 31, 2026
USD ($)
segment
Mar. 31, 2025
USD ($)
Dec. 31, 2025
USD ($)
OPERATING SEGMENTS      
Number of operating segments aggregated for classification as reportable segments | segment 9    
Number of reportable segments | segment 4    
Net Sales $ 4,066.1 $ 3,695.0  
Cost of Sales 2,295.3 2,060.2  
Selling, General and Administrative Expense 1,102.4 1,050.0  
Special (Gains) and Charges 46.4 29.5  
Operating Income $ 622.0 555.3  
Previously Reported | Valued at 2025 Fixed Currency Rates      
OPERATING SEGMENTS      
Net Sales     $ 16,081.2
Operating Income     2,737.6
Previously Reported | Valued at 2026 Fixed Currency Rates      
OPERATING SEGMENTS      
Net Sales     16,081.2
Operating Income     2,737.6
Global Water      
OPERATING SEGMENTS      
Number of sub operating segments | segment 3    
Net Sales $ 2,043.0 1,826.4  
Global Institutional and Specialty      
OPERATING SEGMENTS      
Net Sales 1,511.4 1,418.0  
Global Pest Elimination      
OPERATING SEGMENTS      
Net Sales 310.8 280.6  
Global Life Sciences      
OPERATING SEGMENTS      
Net Sales 200.9 170.0  
Operating segment      
OPERATING SEGMENTS      
Net Sales 4,053.9 3,823.1  
Cost of Sales 2,288.2 2,131.6  
Selling, General and Administrative Expense 1,100.7 1,080.1  
Special (Gains) and Charges 45.3 29.1  
Operating Income 619.7 582.3  
Operating segment | Previously Reported | Valued at 2025 Fixed Currency Rates      
OPERATING SEGMENTS      
Net Sales     15,567.2
Cost of Sales     8,640.2
Selling, General and Administrative Expense     4,150.4
Special (Gains) and Charges     150.3
Operating Income     2,626.3
Operating segment | Previously Reported | Valued at 2026 Fixed Currency Rates      
OPERATING SEGMENTS      
Net Sales     16,298.4
Cost of Sales     9,054.7
Selling, General and Administrative Expense     4,306.5
Special (Gains) and Charges     150.3
Operating Income     2,786.9
Operating segment | Purchase Price Adjustments | Changes in Currency Rates      
OPERATING SEGMENTS      
Net Sales     731.2
Cost of Sales     414.5
Selling, General and Administrative Expense     156.1
Operating Income     160.6
Operating segment | Global Water      
OPERATING SEGMENTS      
Net Sales 2,035.2 1,899.5  
Cost of Sales 1,239.1 1,131.1  
Selling, General and Administrative Expense 498.3 489.7  
Operating Income 297.8 278.7  
Operating segment | Global Water | Previously Reported | Valued at 2025 Fixed Currency Rates      
OPERATING SEGMENTS      
Net Sales     7,679.9
Cost of Sales     4,585.9
Selling, General and Administrative Expense     1,830.1
Operating Income     1,263.9
Operating segment | Global Water | Previously Reported | Valued at 2026 Fixed Currency Rates      
OPERATING SEGMENTS      
Net Sales     8,107.7
Cost of Sales     4,838.1
Selling, General and Administrative Expense     1,912.1
Operating Income     1,357.5
Operating segment | Global Water | Purchase Price Adjustments | Segment Changes      
OPERATING SEGMENTS      
Cost of Sales     (2.3)
Selling, General and Administrative Expense     3.1
Operating Income     (0.8)
Operating segment | Global Water | Purchase Price Adjustments | Changes in Currency Rates      
OPERATING SEGMENTS      
Net Sales     427.8
Cost of Sales     254.5
Selling, General and Administrative Expense     78.9
Operating Income     94.4
Operating segment | Global Institutional and Specialty      
OPERATING SEGMENTS      
Net Sales 1,507.7 1,454.8  
Cost of Sales 751.0 731.4  
Selling, General and Administrative Expense 409.2 415.0  
Operating Income 347.5 308.4  
Operating segment | Global Institutional and Specialty | Previously Reported | Valued at 2025 Fixed Currency Rates      
OPERATING SEGMENTS      
Net Sales     5,962.0
Cost of Sales     2,977.7
Selling, General and Administrative Expense     1,626.5
Operating Income     1,357.8
Operating segment | Global Institutional and Specialty | Previously Reported | Valued at 2026 Fixed Currency Rates      
OPERATING SEGMENTS      
Net Sales     6,164.8
Cost of Sales     3,088.0
Selling, General and Administrative Expense     1,678.7
Operating Income     1,398.1
Operating segment | Global Institutional and Specialty | Purchase Price Adjustments | Segment Changes      
OPERATING SEGMENTS      
Cost of Sales     0.7
Selling, General and Administrative Expense     (1.3)
Operating Income     0.6
Operating segment | Global Institutional and Specialty | Purchase Price Adjustments | Changes in Currency Rates      
OPERATING SEGMENTS      
Net Sales     202.8
Cost of Sales     109.6
Selling, General and Administrative Expense     53.5
Operating Income     39.7
Operating segment | Global Pest Elimination      
OPERATING SEGMENTS      
Net Sales 310.1 287.4  
Cost of Sales 178.8 166.9  
Selling, General and Administrative Expense 79.6 72.8  
Operating Income 51.7 47.7  
Operating segment | Global Pest Elimination | Previously Reported | Valued at 2025 Fixed Currency Rates      
OPERATING SEGMENTS      
Net Sales     1,219.2
Cost of Sales     686.3
Selling, General and Administrative Expense     295.8
Operating Income     237.1
Operating segment | Global Pest Elimination | Previously Reported | Valued at 2026 Fixed Currency Rates      
OPERATING SEGMENTS      
Net Sales     1,258.8
Cost of Sales     707.8
Selling, General and Administrative Expense     306.4
Operating Income     244.6
Operating segment | Global Pest Elimination | Purchase Price Adjustments | Segment Changes      
OPERATING SEGMENTS      
Cost of Sales     0.1
Selling, General and Administrative Expense     0.4
Operating Income     (0.5)
Operating segment | Global Pest Elimination | Purchase Price Adjustments | Changes in Currency Rates      
OPERATING SEGMENTS      
Net Sales     39.6
Cost of Sales     21.4
Selling, General and Administrative Expense     10.2
Operating Income     8.0
Operating segment | Global Life Sciences      
OPERATING SEGMENTS      
Net Sales 200.9 181.4  
Cost of Sales 108.0 97.4  
Selling, General and Administrative Expense 55.4 53.0  
Operating Income 37.5 31.0  
Operating segment | Global Life Sciences | Previously Reported | Valued at 2025 Fixed Currency Rates      
OPERATING SEGMENTS      
Net Sales     706.1
Cost of Sales     382.6
Selling, General and Administrative Expense     202.8
Operating Income     120.7
Operating segment | Global Life Sciences | Previously Reported | Valued at 2026 Fixed Currency Rates      
OPERATING SEGMENTS      
Net Sales     767.1
Cost of Sales     413.1
Selling, General and Administrative Expense     209.9
Operating Income     144.1
Operating segment | Global Life Sciences | Purchase Price Adjustments | Segment Changes      
OPERATING SEGMENTS      
Cost of Sales     1.5
Selling, General and Administrative Expense     (2.2)
Operating Income     0.7
Operating segment | Global Life Sciences | Purchase Price Adjustments | Changes in Currency Rates      
OPERATING SEGMENTS      
Net Sales     61.0
Cost of Sales     29.0
Selling, General and Administrative Expense     9.3
Operating Income     22.7
Operating segment | Corporate      
OPERATING SEGMENTS      
Cost of Sales 11.3 4.8  
Selling, General and Administrative Expense 58.2 49.6  
Special (Gains) and Charges 45.3 29.1  
Operating Income (114.8) (83.5)  
Currency impact      
OPERATING SEGMENTS      
Net Sales 12.2 (128.1)  
Operating Income $ 2.3 $ (27.0)  
Currency impact | Previously Reported | Valued at 2025 Fixed Currency Rates      
OPERATING SEGMENTS      
Net Sales     514.0
Operating Income     111.3
Currency impact | Previously Reported | Valued at 2026 Fixed Currency Rates      
OPERATING SEGMENTS      
Net Sales     (217.2)
Operating Income     (49.3)
Currency impact | Purchase Price Adjustments | Changes in Currency Rates      
OPERATING SEGMENTS      
Net Sales     (731.2)
Operating Income     (160.6)
Corporate | Previously Reported | Valued at 2025 Fixed Currency Rates      
OPERATING SEGMENTS      
Cost of Sales     7.7
Selling, General and Administrative Expense     195.2
Special (Gains) and Charges     150.3
Operating Income     (353.2)
Corporate | Previously Reported | Valued at 2026 Fixed Currency Rates      
OPERATING SEGMENTS      
Cost of Sales     7.7
Selling, General and Administrative Expense     199.4
Special (Gains) and Charges     150.3
Operating Income     (357.4)
Corporate | Purchase Price Adjustments | Changes in Currency Rates      
OPERATING SEGMENTS      
Selling, General and Administrative Expense     4.2
Operating Income     $ (4.2)