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Goodwill and Intangible Assets (Tables) | 12 Months Ended
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Mar. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract] |
Summary of Finite-Lived and Indefinite-Lived Intangible Assets [Table Text Block] | Information regarding our intangible assets is as follows:
|  | 2019 |  | 2018
March 31, |  | Gross Carrying Amount |  | Accumulated Amortization |  | Gross Carrying Amount |  | Accumulated Amortization
Customer relationships |  | $ | 623,774 |  |  | $ | 189,752 |  |  | $ | 663,532 |  |  | $ | 150,358 |
Non-compete agreements |  | 4,693 |  |  | 3,945 |  |  | 4,738 |  |  | 3,790 |
Patents and technology |  | 226,520 |  |  | 126,149 |  |  | 226,318 |  |  | 107,598 |
Trademarks and tradenames |  | 63,570 |  |  | 38,850 |  |  | 83,509 |  |  | 36,864 |
Supplier relationships |  | 54,800 |  |  | 10,047 |  |  | 54,800 |  |  | 7,307 |
Other |  | — |  |  | — |  |  | 10 |  |  | 10 |
Total |  | $ | 973,357 |  |  | $ | 368,743 |  |  | $ | 1,032,907 |  |  | $ | 305,927 |
Schedule of Goodwill [Table Text Block] | Changes to the carrying amount of goodwill for the years ended March 31, 2019, 2018 and 2017 were as follows:
|  | Healthcare Products Segment |  | Healthcare Specialty Services Segment |  | Life Sciences Segment |  | Applied Sterilization Technologies Segment |  | Total
Balance at March 31, 2017 |  | 377,765 |  |  | 375,879 |  |  | 146,514 |  |  | 1,331,145 |  |  | 2,231,303 |
Goodwill acquired or allocated |  | 16,418 |  |  | 3,501 |  |  | — |  |  | 15,847 |  |  | 35,766 |
Reassignment |  | — |  |  | (1,855 | ) |  | — |  |  | 1,855 |  |  | — |
Foreign currency translation adjustments |  | 10,491 |  |  | 10,500 |  |  | 2,302 |  |  | 143,422 |  |  | 166,715 |
Balance at March 31, 2018 |  | $ | 404,674 |  |  | $ | 388,025 |  |  | $ | 148,816 |  |  | $ | 1,492,269 |  |  | $ | 2,433,784 |
Goodwill acquired or allocated |  | (1,202 | ) |  | (907 | ) |  | — |  |  | 5,341 |  |  | 3,232 |
Foreign currency translation adjustments |  | (6,188 | ) |  | (12,208 | ) |  | (1,021 | ) |  | (94,671 | ) |  | (114,088 | )
Balance at March 31, 2019 |  | $ | 397,284 |  |  | $ | 374,910 |  |  | $ | 147,795 |  |  | $ | 1,402,939 |  |  | $ | 2,322,928 |
Schedule of Expected Amortization Expense | Based upon the current amount of intangible assets subject to amortization, the amortization expense for each of the five succeeding fiscal years is estimated to be as follows:
|  | 2020 |  | 2021 |  | 2022 |  | 2023 |  | 2024
Estimated amortization expense |  | $ | 71,917 |  |  | $ | 66,716 |  |  | $ | 63,853 |  |  | $ | 58,412 |  |  | $ | 52,452 |

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