| Income Statement (Quarterly) | 2025-09-30 | 2025-06-30 | 2025-03-31 | 2024-12-31 | 
|---|---|---|---|---|
| Revenue | 659,452,000 | 605,349,000 | 666,422,000 | 634,428,000 | 
| Cost of Revenue | 438,480,000 | 372,289,000 | 445,908,000 | 430,374,000 | 
| Gross Profit | 220,972,000 | 233,060,000 | 220,514,000 | 204,054,000 | 
| Operating Expenses | ||||
| R&D Expenses | 0 | 0 | 0 | 0 | 
| SG&A Expenses | 10,321,000 | 47,713,000 | 11,304,000 | 11,744,000 | 
| Operating Expenses | 69,631,000 | 143,260,000 | 81,309,000 | 67,952,000 | 
| Operating Income | 151,341,000 | 89,800,000 | 139,205,000 | 136,102,000 | 
| Interest Expense | 0 | 0 | 0 | 0 | 
| Income Before Tax | 160,053,000 | 98,050,000 | 150,255,000 | 145,118,000 | 
| Income Tax Expense | 48,272,000 | 517,000 | 28,335,000 | 49,816,000 | 
| Net Income | 111,781,000 | 97,533,000 | 121,920,000 | 95,302,000 | 
| Per Share | ||||
| EPS | 1.67 | 1.47 | 1.84 | 1.45 | 
| EPS Diluted | 0.00 | 0.00 | 0.00 | 0.00 | 
| Income Statement (Annual) | 2025-03-31 | 2024-03-31 | 2023-03-31 | 2022-03-31 | 2021-03-31 | 
|---|---|---|---|---|---|
| Revenue | 2,389,416,000 | 1,914,404,000 | 1,809,447,000 | 2,269,958,000 | 1,525,452,000 | 
| Cost of Revenue | 1,469,491,000 | 1,177,355,000 | 1,147,879,000 | 1,408,634,000 | 971,195,000 | 
| Gross Profit | 919,925,000 | 737,049,000 | 696,638,000 | 861,324,000 | 554,257,000 | 
| Operating Expenses | |||||
| R&D Expenses | 0 | 0 | 0 | 0 | 0 | 
| SG&A Expenses | 188,484,000 | 185,324,000 | 142,903,000 | 150,275,000 | 102,087,000 | 
| Operating Expenses | 418,381,000 | 374,188,000 | 319,830,000 | 248,460,000 | 146,100,000 | 
| Operating Income | 501,544,000 | 362,861,000 | 341,738,000 | 612,864,000 | 408,157,000 | 
| Interest Expense | 0 | 0 | 2,738,000 | 9,499,000 | 0 | 
| Income Before Tax | 531,335,000 | 390,539,000 | 324,000,000 | 603,938,000 | 409,228,000 | 
| Income Tax Expense | 131,624,000 | 110,238,000 | 69,777,000 | 165,614,000 | 96,457,000 | 
| Net Income | 399,711,000 | 280,301,000 | 254,223,000 | 437,751,000 | 312,771,000 | 
| Per Share | |||||
| EPS | 6.08 | 4.36 | 4.01 | 6.74 | 4.75 | 
| EPS Diluted | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Balance Sheet (Quarterly) | 2025-03-31 | 2024-03-31 | 2023-03-31 | 2022-03-31 | 
|---|---|---|---|---|
| Assets | ||||
| Cash and Cash Equivalents | 971,007,000 | 721,235,000 | 714,439,000 | 833,697,000 | 
| Short Term Investments | 167,328,000 | 7,566,000 | 37,309,000 | 109,143,000 | 
| Net Receivables | 415,086,000 | 424,498,000 | 314,767,000 | 248,780,000 | 
| Inventory | 0 | 0 | 1,058,821,000 | 0 | 
| Total Current Assets | 1,557,993,000 | 1,153,918,000 | 1,029,579,000 | 1,082,850,000 | 
| Property Plant Equipment | 512,019,000 | 480,725,000 | 422,222,000 | 224,118,000 | 
| Goodwill and Intangibles | 1,497,259,000 | 1,324,936,000 | 1,291,154,000 | 1,317,775,000 | 
| Total Assets | 3,819,708,000 | 3,170,759,000 | 2,968,814,000 | 2,886,810,000 | 
| Liabilities | ||||
| Account Payables | 137,228,000 | 114,171,000 | 113,421,000 | 126,190,000 | 
| Short Term Debt | 49,866,000 | 0 | 31,617,000 | 34,693,000 | 
| Total Current Liabilities | 1,128,458,000 | 873,341,000 | 919,993,000 | 1,169,813,000 | 
| Long Term Debt | 438,185,000 | 415,412,000 | 374,869,000 | 197,630,000 | 
| Total Liabilities | 1,644,831,000 | 1,334,009,000 | 1,340,517,000 | 1,443,105,000 | 
| Shareholders Equity | ||||
| Retained Earnings | 1,394,738,000 | 1,163,419,000 | 1,048,072,000 | 922,223,000 | 
| Total Shareholders Equity | 2,174,877,000 | 1,836,750,000 | 1,628,297,000 | 1,443,705,000 | 
| Balance Sheet (Annual) | 2025-03-31 | 2024-03-31 | 2023-03-31 | 2022-03-31 | 2021-03-31 | 
|---|---|---|---|---|---|
| Assets | |||||
| Cash and Cash Equivalents | 971,007,000 | 721,235,000 | 714,439,000 | 833,697,000 | 846,851,000 | 
| Short Term Investments | 167,328,000 | 7,566,000 | 37,309,000 | 109,143,000 | 0 | 
| Net Receivables | 415,086,000 | 424,498,000 | 314,767,000 | 248,780,000 | 226,524,000 | 
| Inventory | 0 | 0 | 1,058,821,000 | 0 | 0 | 
| Total Current Assets | 1,557,993,000 | 1,153,918,000 | 1,029,579,000 | 1,082,850,000 | 1,073,748,000 | 
| Property Plant Equipment | 512,019,000 | 480,725,000 | 422,222,000 | 224,118,000 | 198,401,000 | 
| Goodwill and Intangibles | 1,497,259,000 | 1,324,936,000 | 1,291,154,000 | 1,317,775,000 | 0 | 
| Total Assets | 3,819,708,000 | 3,170,759,000 | 2,968,814,000 | 2,886,810,000 | 2,426,067,000 | 
| Liabilities | |||||
| Account Payables | 137,228,000 | 114,171,000 | 113,421,000 | 126,190,000 | 67,468,000 | 
| Short Term Debt | 49,866,000 | 0 | 31,617,000 | 34,693,000 | 0 | 
| Total Current Liabilities | 1,128,458,000 | 873,341,000 | 919,993,000 | 1,169,813,000 | 812,074,000 | 
| Long Term Debt | 438,185,000 | 415,412,000 | 374,869,000 | 197,630,000 | 818,000 | 
| Total Liabilities | 1,644,831,000 | 1,334,009,000 | 1,340,517,000 | 1,443,105,000 | 1,042,506,000 | 
| Shareholders Equity | |||||
| Retained Earnings | 1,394,738,000 | 1,163,419,000 | 1,048,072,000 | 922,223,000 | 600,096,000 | 
| Total Shareholders Equity | 2,174,877,000 | 1,836,750,000 | 1,628,297,000 | 1,443,705,000 | 1,383,561,000 | 
| Cash Flow Statement (Quarterly) | 2025-03-31 | 2024-03-31 | 2023-03-31 | 2022-03-31 | 
|---|---|---|---|---|
| Operating Activities | ||||
| Net Income | 399,711,000 | 280,301,000 | 254,223,000 | 438,324,000 | 
| Depreciation & Amortization | 41,270,000 | 28,536,000 | 58,221,000 | 48,537,000 | 
| Stock Based Compensation | 168,443,000 | 166,595,000 | 156,936,000 | 91,875,000 | 
| Change in Working Capital | 196,075,000 | -196,367,000 | -368,510,000 | 182,378,000 | 
| Operating Cash Flow | 848,609,000 | 328,458,000 | 136,273,000 | 736,604,000 | 
| Investing Activities | ||||
| Capital Expenditure | -39,699,000 | -66,730,000 | -50,731,000 | -8,680,000 | 
| Investments | -39,699,000 | -66,730,000 | -50,731,000 | -8,680,000 | 
| Investing Cash Flow | -265,058,000 | -70,406,000 | -3,004,000 | -273,914,000 | 
| Financing Activities | ||||
| Debt Repayment | 0 | 0 | -3,027,000 | -280,000 | 
| Common Stock Issued/Repurchased | -52,514,000 | -24,952,000 | -48,659,000 | -304,793,000 | 
| Dividends Paid | -165,217,000 | -148,454,000 | -140,384,000 | -114,806,000 | 
| Financing Cash Flow | -329,070,000 | -250,585,000 | -240,462,000 | -459,060,000 | 
| Summary | ||||
| Free Cash Flow | 808,910,000 | 261,728,000 | 85,542,000 | 727,924,000 | 
| Net Change in Cash | 253,725,000 | 7,042,000 | -119,258,000 | -13,154,000 | 
| Cash Flow Statement (Annual) | 2025-03-31 | 2024-03-31 | 2023-03-31 | 2022-03-31 | 2021-03-31 | 
|---|---|---|---|---|---|
| Operating Activities | |||||
| Net Income | 399,711,000 | 280,301,000 | 254,223,000 | 438,324,000 | 312,771,000 | 
| Depreciation & Amortization | 41,270,000 | 28,536,000 | 58,221,000 | 48,537,000 | 15,228,000 | 
| Stock Based Compensation | 168,443,000 | 166,595,000 | 156,936,000 | 91,875,000 | 62,421,000 | 
| Change in Working Capital | 196,075,000 | -196,367,000 | -368,510,000 | 182,378,000 | 180,229,000 | 
| Operating Cash Flow | 848,609,000 | 328,458,000 | 136,273,000 | 736,604,000 | 579,837,000 | 
| Investing Activities | |||||
| Capital Expenditure | -39,699,000 | -66,730,000 | -50,731,000 | -8,680,000 | -14,148,000 | 
| Investments | -39,699,000 | -66,730,000 | -50,731,000 | -8,680,000 | -14,148,000 | 
| Investing Cash Flow | -265,058,000 | -70,406,000 | -3,004,000 | -273,914,000 | -99,748,000 | 
| Financing Activities | |||||
| Debt Repayment | 0 | 0 | -3,027,000 | -280,000 | -4,176,000 | 
| Common Stock Issued/Repurchased | -52,514,000 | -24,952,000 | -48,659,000 | -304,793,000 | 86,836,000 | 
| Dividends Paid | -165,217,000 | -148,454,000 | -140,384,000 | -114,806,000 | -92,006,000 | 
| Financing Cash Flow | -329,070,000 | -250,585,000 | -240,462,000 | -459,060,000 | -26,823,000 | 
| Summary | |||||
| Free Cash Flow | 808,910,000 | 261,728,000 | 85,542,000 | 727,924,000 | 565,689,000 | 
| Net Change in Cash | 253,725,000 | 7,042,000 | -119,258,000 | -13,154,000 | 466,478,000 |