v3.26.1
Business Segment Information - Income Statement (Details) - USD ($)
$ in Millions
12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Segment Reporting [Line Items]      
Total revenues $ 5,935.9 $ 5,459.5 $ 5,138.7
Selling, general, and administrative 1,407.7 1,334.3 1,252.3
Research and development 112.9 107.6 103.7
Operating Income (Loss), Before Adjustments 1,381.9 1,267.5 1,184.0
amortization and impairment of acquired intangible assets 265.0 273.8 266.4
Business Combination, Acquisition-Related Cost, Expense 6.2 11.2 25.5
redomiciliation costs 0.5 0.1 0.6
Gain (Loss) on Disposition of Business     0.9
amortization of inventory and property step up to fair value 5.0 5.4 10.0
Restructuring expenses 3.4 62.3 44.4
Litigation Settlement, Loss 0.0 48.2 0.0
Operating Income (Loss) 1,101.8 866.6 836.1
Healthcare Segment      
Segment Reporting [Line Items]      
Total revenues 4,208.6 3,878.7 3,613.0
AST      
Segment Reporting [Line Items]      
Total revenues 1,138.5 1,038.6 954.0
Life Sciences      
Segment Reporting [Line Items]      
Total revenues 588.8 542.3 571.7
Operating Segments | Healthcare Segment      
Segment Reporting [Line Items]      
Total revenues 4,208.6 3,878.7 3,613.0
Cost of Revenue 2,422.5 2,204.1 2,083.9
Selling, general, and administrative 652.3 610.0 568.0
Research and development 97.5 93.1 89.8
Operating Income (Loss), Before Adjustments 1,036.4 971.5 871.4
Operating Segments | AST      
Segment Reporting [Line Items]      
Total revenues 1,138.5 1,038.6 954.0
Cost of Revenue 552.8 516.7 458.4
Selling, general, and administrative 57.7 52.5 51.7
Research and development 3.3 3.8 4.1
Operating Income (Loss), Before Adjustments 524.7 465.6 439.7
Operating Segments | Life Sciences      
Segment Reporting [Line Items]      
Total revenues 588.8 542.3 571.7
Cost of Revenue 262.7 243.7 283.9
Selling, general, and administrative 65.0 59.8 58.2
Research and development 10.3 9.4 8.3
Operating Income (Loss), Before Adjustments 251.0 229.4 221.3
Corporate      
Segment Reporting [Line Items]      
Total revenues 0.0 0.0 0.0
Operating Income (Loss), Before Adjustments $ (430.1) $ (399.0) $ (348.5)