| USD ($) $ in Thousands | Mar 31, 2026 | Dec 31, 2025 | Sep 30, 2025 | Mar 31, 2025 | Dec 31, 2024 | Sep 30, 2024 | Mar 31, 2024 | Dec 31, 2023 | Sep 30, 2023 | Mar 31, 2023 | Dec 31, 2022 | Sep 30, 2022 | Mar 31, 2022 | Dec 31, 2021 | Sep 30, 2021 | Mar 31, 2021 | Dec 31, 2020 | Sep 30, 2020 | Mar 31, 2020 | Dec 31, 2019 | Sep 30, 2019 | Mar 31, 2019 | Dec 31, 2018 | Sep 30, 2018 | Mar 31, 2018 | Dec 31, 2017 | Sep 30, 2017 | Mar 31, 2017 | Dec 31, 2016 | Sep 30, 2016 | Mar 31, 2016 | Dec 31, 2015 | Sep 30, 2015 | Mar 31, 2015 | Dec 31, 2014 | Sep 30, 2014 | Mar 31, 2014 | Dec 31, 2013 | Sep 30, 2013 | Mar 31, 2013 | Dec 31, 2012 | Sep 30, 2012 | Mar 31, 2012 | Dec 31, 2011 | Sep 30, 2011 | Mar 31, 2011 | Dec 31, 2010 |
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Current assets: | |||||||||||||||||||||||||||||||||||||||||||||||
ASSETS | |||||||||||||||||||||||||||||||||||||||||||||||
Cash and cash equivalents | $ 1,787,010 | $ 2,452,124 | $ 1,946,211 | $ 1,858,022 | $ 1,838,278 | $ 1,977,202 | $ 1,848,167 | $ 1,665,054 | $ 1,711,570 | $ 1,568,513 | $ 1,571,477 | $ 1,819,280 | |||||||||||||||||||||||||||||||||||
Marketable securities | 3,170,928 | 2,755,340 | 2,737,380 | 2,170,600 | 1,942,127 | 2,652,514 | 2,446,135 | 1,677,940 | 1,637,751 | 1,321,696 | 1,294,873 | 1,134,240 | |||||||||||||||||||||||||||||||||||
Accounts receivable, net | 2,304,454 | 2,073,581 | 2,277,755 | 2,159,897 | 2,334,977 | 1,953,156 | 1,625,257 | 1,843,878 | 1,630,746 | 1,940,067 | 2,282,925 | 1,857,320 | |||||||||||||||||||||||||||||||||||
Inventories | 3,437,046 | 3,282,605 | 3,297,368 | 3,155,777 | 3,046,340 | 3,109,837 | 3,007,053 | 3,038,628 | 3,007,705 | 2,749,743 | 2,535,375 | 2,408,325 | |||||||||||||||||||||||||||||||||||
Deferred income taxes | 1,123,406 | 1,144,113 | 1,131,211 | 1,023,292 | 1,002,169 | 981,591 | 879,380 | 902,163 | 870,472 | 783,843 | 765,046 | 662,408 | |||||||||||||||||||||||||||||||||||
Other current assets | 651,541 | 700,155 | 642,446 | 600,723 | 610,882 | 535,730 | 601,470 | 523,221 | 443,019 | 438,731 | 447,932 | 424,774 | |||||||||||||||||||||||||||||||||||
Total current assets | 11,350,979 | 11,263,805 | 10,901,160 | 9,945,019 | 9,772,604 | 10,228,439 | 9,528,082 | 8,748,721 | 8,430,791 | 8,018,750 | 8,132,582 | 7,643,939 | |||||||||||||||||||||||||||||||||||
Non-current assets: | |||||||||||||||||||||||||||||||||||||||||||||||
Land, property and equipment, net | 1,363,784 | 1,344,768 | 1,301,829 | 1,198,302 | 1,173,928 | 1,118,312 | 1,106,278 | 1,088,824 | 1,059,925 | 984,271 | 964,813 | 913,002 | |||||||||||||||||||||||||||||||||||
Goodwill, net | 1,788,483 | 1,790,597 | 1,791,022 | 1,787,532 | 1,785,297 | 2,015,721 | 2,015,727 | 2,086,204 | 2,278,805 | 2,278,817 | 2,278,809 | 2,278,827 | |||||||||||||||||||||||||||||||||||
Purchased intangible assets, net | 300,717 | 348,018 | 397,366 | 495,572 | 548,645 | 612,011 | 727,601 | 786,233 | 871,999 | 999,958 | 1,065,091 | 1,131,445 | |||||||||||||||||||||||||||||||||||
Other non-current assets | 946,146 | 828,927 | 795,386 | 738,590 | 719,053 | 725,663 | 700,221 | 668,356 | 624,849 | 617,910 | 522,733 | 494,031 | |||||||||||||||||||||||||||||||||||
Total assets | 16,873,515 | 16,720,228 | 16,317,974 | 15,188,307 | 15,001,696 | 15,681,737 | 14,957,289 | 14,280,501 | 14,136,841 | 13,683,549 | 13,729,074 | 13,123,652 | |||||||||||||||||||||||||||||||||||
LIABILITIES AND STOCKHOLDERS’ EQUITY | |||||||||||||||||||||||||||||||||||||||||||||||
Current liabilities: | |||||||||||||||||||||||||||||||||||||||||||||||
Accounts payable | 515,009 | 425,189 | 429,836 | 429,318 | 432,891 | 376,505 | 354,720 | 376,671 | 363,662 | 410,885 | 530,407 | 479,707 | |||||||||||||||||||||||||||||||||||
Deferred system revenue | 620,839 | 858,088 | 818,807 | 868,345 | 1,072,565 | 877,207 | 994,469 | 884,027 | 665,777 | 533,791 | 535,556 | 440,477 | |||||||||||||||||||||||||||||||||||
Deferred system profit | - | - | - | - | - | - | - | - | - | - | - | - | |||||||||||||||||||||||||||||||||||
Deferred service revenue | 576,503 | 599,254 | 604,752 | 509,075 | 521,424 | 512,470 | 450,933 | 446,243 | 406,940 | 364,394 | 372,555 | 362,832 | |||||||||||||||||||||||||||||||||||
Current portion of long-term debt | - | - | - | 0 | 0 | 749,984 | - | - | - | - | - | - | |||||||||||||||||||||||||||||||||||
Short-term debt | - | - | - | - | - | - | 749,889 | 749,842 | - | - | - | - | |||||||||||||||||||||||||||||||||||
Other current liabilities | 2,039,204 | 2,099,941 | 2,196,575 | 2,103,191 | 2,111,378 | 2,282,048 | 1,908,527 | 2,114,214 | 2,381,364 | 2,109,451 | 2,043,983 | 1,856,348 | |||||||||||||||||||||||||||||||||||
Total current liabilities | 3,751,555 | 3,982,472 | 4,049,970 | 3,909,929 | 4,138,258 | 4,798,214 | 4,458,538 | 4,570,997 | 3,817,743 | 3,418,521 | 3,482,501 | 3,139,364 | |||||||||||||||||||||||||||||||||||
Non-current liabilities: | |||||||||||||||||||||||||||||||||||||||||||||||
Long-term debt | 5,887,063 | 5,886,128 | 5,885,193 | 5,883,322 | 5,882,387 | 5,881,372 | 5,879,025 | 5,142,884 | 5,891,731 | 5,889,740 | 6,113,745 | 6,312,749 | |||||||||||||||||||||||||||||||||||
Deferred tax liabilities | 444,182 | 452,678 | 464,519 | 405,912 | 423,626 | 471,575 | 480,270 | 493,968 | 505,812 | 514,269 | 559,346 | 557,832 | |||||||||||||||||||||||||||||||||||
Deferred service revenue | 251,563 | 270,549 | 287,133 | 351,931 | 333,758 | 319,794 | 271,365 | 221,768 | 192,236 | 176,260 | 162,768 | 129,861 | |||||||||||||||||||||||||||||||||||
Pension liabilities | - | - | - | - | - | - | - | - | - | - | - | - | |||||||||||||||||||||||||||||||||||
Income tax payable | - | - | - | - | - | - | - | - | - | - | - | - | |||||||||||||||||||||||||||||||||||
Other non-current liabilities | 708,657 | 662,670 | 646,088 | 632,474 | 639,118 | 651,068 | 773,206 | 807,173 | 739,102 | 1,001,978 | 807,454 | 881,772 | |||||||||||||||||||||||||||||||||||
Total liabilities | 11,043,020 | 11,254,497 | 11,332,903 | 11,183,568 | 11,417,147 | 12,122,023 | 11,862,404 | 11,236,790 | 11,146,624 | 11,000,768 | 11,125,814 | 11,021,578 | |||||||||||||||||||||||||||||||||||
Stockholders’ equity: | |||||||||||||||||||||||||||||||||||||||||||||||
Common stock and capital in excess of par value | 2,675,013 | 2,604,177 | 2,489,121 | 2,401,317 | 2,346,346 | 2,257,052 | 2,177,501 | 2,154,509 | 2,073,476 | 1,996,773 | 1,982,360 | 1,041,948 | |||||||||||||||||||||||||||||||||||
Retained earnings | 3,187,462 | 2,860,594 | 2,495,279 | 1,646,055 | 1,284,589 | 1,328,166 | 958,904 | 921,466 | 966,179 | 721,299 | 670,002 | 1,118,967 | |||||||||||||||||||||||||||||||||||
Accumulated other comprehensive income (loss) | (31,980) | 960 | 671 | (42,633) | (46,386) | (25,504) | (41,520) | (32,264) | (49,438) | (35,291) | (49,102) | (58,841) | |||||||||||||||||||||||||||||||||||
Total stockholders’ equity | 5,830,495 | 5,465,731 | 4,985,071 | 4,004,739 | 3,584,549 | 3,559,714 | 3,094,885 | 3,043,711 | - | 2,682,781 | 2,603,260 | 2,102,074 | |||||||||||||||||||||||||||||||||||
Non-controlling interest in consolidated subsidiaries | - | - | - | - | - | - | - | - | - | 0 | 0 | 0 | |||||||||||||||||||||||||||||||||||
Total stockholders’ equity | - | - | - | - | - | - | - | - | 2,990,217 | 2,682,781 | 2,603,260 | 2,102,074 | |||||||||||||||||||||||||||||||||||
Total liabilities and stockholders’ equity | $ 16,873,515 | $ 16,720,228 | $ 16,317,974 | $ 15,188,307 | $ 15,001,696 | $ 15,681,737 | $ 14,957,289 | $ 14,280,501 | $ 14,136,841 | $ 13,683,549 | $ 13,729,074 | $ 13,123,652 |