v3.26.1
Goodwill and Intangible Assets Goodwill Rollforward (Details) - USD ($)
$ in Millions
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Goodwill [Roll Forward]    
Goodwill, Beginning Balance $ 4,095.7 $ 4,070.7
Goodwill, Acquired During Period 8.8 10.6
Goodwill, Measurement Period Adjustment 0.0 (12.1)
Goodwill, Divestiture 0.0  
Goodwill, Foreign Currency Translation, Gain (Loss) 90.4 26.4
Goodwill, Ending Balance 4,194.8 4,095.7
Healthcare:    
Goodwill [Roll Forward]    
Goodwill, Beginning Balance 2,509.3 2,500.9
Goodwill, Acquired During Period 8.8 2.1
Goodwill, Measurement Period Adjustment 0.0 0.0
Goodwill, Divestiture 0.0  
Goodwill, Foreign Currency Translation, Gain (Loss) 21.0 6.3
Goodwill, Ending Balance 2,539.0 2,509.3
AST    
Goodwill [Roll Forward]    
Goodwill, Beginning Balance 1,415.4 1,387.6
Goodwill, Acquired During Period 0.0 8.5
Goodwill, Measurement Period Adjustment 0.0 (0.5)
Goodwill, Divestiture 0.0  
Goodwill, Foreign Currency Translation, Gain (Loss) 66.8 19.9
Goodwill, Ending Balance 1,482.3 1,415.4
Life Sciences    
Goodwill [Roll Forward]    
Goodwill, Beginning Balance 170.9 182.2
Goodwill, Acquired During Period 0.0 0.0
Goodwill, Measurement Period Adjustment 0.0 (11.6)
Goodwill, Divestiture 0.0  
Goodwill, Foreign Currency Translation, Gain (Loss) 2.6 0.3
Goodwill, Ending Balance $ 173.5 $ 170.9