| Effect of Fourth Quarter Events [Table Text Block] |
| | | | | | | | | | | | | | | | | Quarters Ended | March 31, | | December 31, | | September 30, | | June 30, | Fiscal 2020 | | | | | | | | Revenues: | | | | | | | | Product | $ | 393,592 |
| | $ | 363,795 |
| | $ | 337,666 |
| | $ | 307,735 |
| Service | 429,399 |
| | 410,466 |
| | 399,174 |
| | 389,068 |
| Total Revenues | 822,991 |
| | 774,261 |
| | 736,840 |
| | 696,803 |
| Cost of Revenues: | | | | | | | | Product | 210,538 |
| | 195,105 |
| | 183,600 |
| | 160,959 |
| Service | 248,393 |
| | 247,803 |
| | 234,573 |
| | 230,001 |
| Total Cost of Revenues | 458,931 |
| | 442,908 |
| | 418,173 |
| | 390,960 |
| Gross Profit | 364,060 |
| | 331,353 |
| | 318,667 |
| | 305,843 |
| Percentage of Revenues | 44.2 | % | | 42.8 | % | | 43.2 | % | | 43.9 | % | Restructuring Expenses | 6 |
| | (448 | ) | | (274 | ) | | 1,389 |
| Net Income Attributable to Shareholders | $ | 123,316 |
| | $ | 104,930 |
| | $ | 94,769 |
| | $ | 84,590 |
| Basic Income Per Ordinary Share Attributable to Shareholders: | | | | | | | | Net income | $ | 1.45 |
| | $ | 1.24 |
| | $ | 1.12 |
| | $ | 1.00 |
| Diluted Income Per Ordinary Share Attributable to Shareholders: | | | | | | | | Net income | $ | 1.44 |
| | $ | 1.23 |
| | $ | 1.11 |
| | $ | 0.99 |
| | | | | | | | | Fiscal 2019 | | | | | | | | Revenues: | | | | | | | | Product | $ | 374,937 |
| | $ | 327,639 |
| | $ | 314,659 |
| | $ | 278,790 |
| Service | 393,276 |
| | 368,599 |
| | 364,302 |
| | 359,968 |
| Total Revenues | 768,213 |
| | 696,238 |
| | 678,961 |
| | 638,758 |
| Cost of Revenues: | | | | | | | | Product | 201,357 |
| | 182,229 |
| | 172,107 |
| | 146,602 |
| Service | 232,140 |
| | 227,012 |
| | 222,190 |
| | 223,106 |
| Total Cost of Revenues | 433,497 |
| | 409,241 |
| | 394,297 |
| | 369,708 |
| Gross Profit | 334,716 |
| | 286,997 |
| | 284,664 |
| | 269,050 |
| Percentage of Revenues | 43.6 | % | | 41.2 | % | | 41.9 | % | | 42.1 | % | Restructuring Expenses | 4,840 |
| | 26,147 |
| | — |
| | — |
| Net Income Attributable to Shareholders | $ | 108,745 |
| | $ | 47,858 |
| | $ | 77,457 |
| | $ | 69,991 |
| Basic Income Per Ordinary Share Attributable to Shareholders: | | | | | | | | Net income | $ | 1.29 |
| | $ | 0.57 |
| | $ | 0.92 |
| | $ | 0.83 |
| Diluted Income Per Ordinary Share Attributable to Shareholders: | | | | | | | | Net income | $ | 1.27 |
| | $ | 0.56 |
| | $ | 0.91 |
| | $ | 0.82 |
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