Business Segment Information (Tables)
12 Months Ended
Mar. 31, 2020
Segment Reporting Information [Line Items]  
Schedule of Segment Reporting Information, by Segment
Years Ended March 31,
 
2020
 
2019
 
2018
Revenues:
 
 
 
 
 
 
Healthcare Products
 
$
1,423,198

 
$
1,338,428

 
$
1,276,054

Healthcare Specialty Services
 
563,611

 
510,057

 
469,065

Life Sciences
 
416,939

 
378,558

 
361,590

Applied Sterilization Technologies
 
627,147

 
555,127

 
513,287

Total revenues
 
$
3,030,895

 
$
2,782,170

 
$
2,619,996

Operating income (loss):
 
 
 
 
 
 
Healthcare Products
 
356,419

 
323,684

 
294,162

Healthcare Specialty Services
 
64,217

 
64,222

 
58,458

Life Sciences
 
144,088

 
132,129

 
123,889

Applied Sterilization Technologies
 
270,917

 
221,828

 
196,297

Total reportable segments
 
835,641

 
741,863

 
672,806

Corporate
 
(207,015
)
 
(184,900
)
 
(162,999
)
Total operating income before adjustments
 
$
628,626

 
$
556,963

 
$
509,807

Less: Adjustments
 
 
 
 
 
 
Amortization of acquired intangible assets (1)
 
71,675

 
86,878

 
67,793

Acquisition and integration related charges (2)
 
8,225

 
8,901

 
16,211

Redomiciliation and tax restructuring costs (3)
 
3,699

 
8,783

 

(Gain) on fair value adjustment of acquisition related contingent consideration (1)
 

 
(842
)
 
(593
)
 Net loss (gain) on divestiture of businesses (1)
 
1,770

 
(1,370
)
 
14,547

Amortization of property "step up" to fair value (1)
 
2,392

 
2,440

 
1,599

Restructuring charges (4)
 
3,143

 
40,708

 
103

Impact of the U.S. Tax Cuts and Jobs Act (5)
 

 

 
10,264

COVID-19 incremental costs (6)
 
749

 

 

Total operating income
 
$
536,973

 
$
411,465

 
$
399,883


Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area
March 31,
 
2020
 
2019
Property, Plant, and Equipment, Net
 
 
 
 
Ireland
 
$
47,459

 
$
41,137

United States
 
632,333

 
577,113

Other locations
 
432,063

 
413,332

Property, Plant, and Equipment, Net
 
$
1,111,855

 
$
1,031,582


Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]
Years Ended March 31,
 
2020
 
2019
 
2018
Revenues:
 
 
 
 
 
 
Ireland
 
$
63,821

 
$
56,784

 
$
48,246

United States
 
2,211,722

 
1,976,814

 
1,836,414

Other locations
 
755,352

 
748,572

 
735,336

Total Revenues
 
$
3,030,895

 
$
2,782,170

 
$
2,619,996


Revenue from External Customers by Products and Services [Table Text Block]
Years Ended March 31,
 
2020
 
2019
 
2018
Healthcare Products:
 
 
 
 
 
 
Capital equipment
 
$
592,436

 
568,811

 
527,402

Consumables
 
454,518

 
414,969

 
412,495

Service
 
376,244

 
354,648

 
336,157

Total Healthcare Products Revenues
 
$
1,423,198

 
$
1,338,428

 
$
1,276,054

Total Healthcare Specialty Services Revenues
 
$
563,611

 
$
510,057

 
$
469,065

Life Sciences:
 
 
 
 
 
 
Capital equipment

 
$
112,747

 
102,714

 
100,555

Consumables
 
185,904

 
161,780

 
150,656

Service
 
118,288

 
114,064

 
110,379

Total Life Sciences Revenues
 
$
416,939

 
$
378,558

 
$
361,590

Applied Sterilization Technologies Service Revenues
 
$
627,147

 
$
555,127

 
$
513,287

Total Revenues
 
$
3,030,895

 
$
2,782,170

 
$
2,619,996


Effective April 1, 2020, and consistent with the way management will operate and view the business, the current Healthcare Products and Healthcare Specialty Services segments will be combined and reported as one segment, simply called Healthcare. Going forward we will operate and report in three business segments: Healthcare, Life Sciences and Applied Sterilization Technologies. Corporate will continue to be presented separately and contain the costs that are associated with being a publicly traded company and certain other corporate costs.
Other Expense  
Segment Reporting Information [Line Items]  
Schedule of Segment Reporting Information, by Segment
Years Ended March 31,
 
2020
 
2019
 
2018
Capital Expenditures
 
 
 
 
 
 
Healthcare Products and Life Sciences
 
$
44,029

 
$
49,688

 
$
52,767

Healthcare Specialty Services
 
40,619

 
39,950

 
16,497

Applied Sterilization Technologies
 
129,868

 
100,077

 
96,193

Total Capital Expenditures
 
$
214,516

 
$
189,715

 
$
165,457

Depreciation, Depletion, and Amortization
 
 
 
 
 
 
Healthcare Products and Life Sciences (1) (2)
 
$
59,150

 
$
81,264

 
$
52,025

Healthcare Specialty Services
 
33,043

 
33,392

 
29,269

Applied Sterilization Technologies (1)
 
105,042

 
111,265

 
97,038

Total Depreciation, Depletion, and Amortization
 
$
197,235

 
$
225,921

 
$
178,332

Assets  
Segment Reporting Information [Line Items]  
Schedule of Segment Reporting Information, by Segment
March 31,
 
2020
 
2019
Assets:
 
 
 
 
Healthcare Products and Life Sciences
 
$
1,809,636

 
$
1,611,852

Healthcare Specialty Services
 
895,741

 
805,349

Applied Sterilization Technologies
 
2,720,205

 
2,655,870

Total assets
 
$
5,425,582

 
$
5,073,071