| Mar 31, 2012 | Mar 31, 2014 | Mar 31, 2015 | Mar 31, 2016 | Mar 31, 2017 | Mar 31, 2018 | Mar 31, 2019 | Mar 31, 2020 | Mar 31, 2021 | Mar 31, 2022 | Mar 31, 2023 | Mar 31, 2024 | Mar 31, 2025 |
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| Earnings available to common stockholders | 205 | 342 | 357 | 489 | 398 | 791 | 371 | 442 | 611 | 1,123 | 923 | 629 | 367 |
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| Depreciation | 230 | 293 | 353 | 389 | 482 | 555 | 581 | 664 | 664 | 697 | 734 | 818 | 972 |
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| Amortization Accretion Of Discounts And Premiums Investments | - | - | - | - | - | - | - | - | - | 20 | 20 | 17 | 14 |
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| Amortization Of Financing Costs | - | - | - | - | 4 | 4 | 4 | 4 | 6 | 6 | 7 | 7 | 6 |
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| Interest credited to policyholders | - | - | - | - | - | 32 | 35 | 52 | 55 | 65 | 56 | 71 | 85 |
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| Provision for Doubtful Accounts | -0 | -0 | -0 | -0 | -0 | -0 | 0 | -0 | 1 | 4 | -5 | 2 | 1 |
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| Operating lease right-of-use asset amortization | - | - | - | - | - | - | - | - | - | - | - | - | 11 |
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| Net gains on disposal of personal property | - | 34 | 75 | 99 | 36 | 12 | 27 | - | 54 | 214 | 247 | 154 | 14 |
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| Gain Loss Disposal Of Assets | - | - | - | - | - | - | - | - | - | - | - | 8 | 16 |
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| Net (gains) losses on sales of investments | - | - | - | - | - | - | - | - | - | - | - | 0 | 2 |
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| Net (gains) losses on equity investments | - | - | - | - | - | - | 6 | -4 | -0 | 8 | -9 | 6 | 6 |
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| Deferred income taxes, net | - | 46 | 77 | 138 | 173 | -193 | 107 | 318 | 68 | 101 | 132 | 98 | 42 |
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| Trade receivables and reinsurance recoverables | - | - | - | - | - | - | - | - | - | - | - | 29 | 14 |
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| Inventories and parts, net | -0 | 11 | 2 | 9 | 4 | 12 | 13 | -2 | 6 | 69 | 2 | 1 | 12 |
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| Prepaid expenses | 16 | -2 | 66 | 10 | -9 | 41 | 9 | 391 | -94 | -232 | 6 | 4 | 37 |
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| Capitalization of deferred policy acquisition costs | -23 | 33 | 27 | 33 | 27 | 27 | 26 | 24 | 36 | 33 | 25 | 7 | 1 |
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| Other assets and Right of use assets - operating, net | 6 | -8 | -4 | -15 | 41 | 166 | -157 | 1 | -30 | 3 | -16 | 10 | 20 |
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| Related party assets | -25 | -8 | -28 | -57 | -0 | -53 | -4 | 6 | 0 | 10 | 1 | 10 | 13 |
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| Accounts payable and accrued expenses and operating lease liabilties | - | - | - | - | - | - | - | - | - | - | - | 11 | 14 |
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| Increase (Decrease) in Other Insurance Liabilities | 212 | -30 | -18 | 10 | 15 | 161 | -236 | -13 | -2 | -20 | -14 | 39 | 22 |
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| Other policyholders' funds and liabilities | -1 | 1 | 1 | -0 | 1 | -0 | 5 | -5 | 2 | -2 | -3 | 10 | 4 |
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| Deferred income | 4 | 1 | -13 | 5 | 6 | 6 | 1 | -2 | 12 | 5 | 5 | 2 | 2 |
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| Related party liabilities | 5 | 5 | -1 | -1 | -1 | -1 | -2 | 2 | 0 | -2 | -1 | 6 | 2 |
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| Net cash provided by operating activities | 665 | 710 | 808 | 1,041 | 1,020 | 936 | 976 | 1,076 | 1,535 | 1,946 | 1,730 | 1,453 | 1,454 |
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| Escrow deposits activity | - | - | - | - | - | - | - | - | - | - | - | - | 4 |
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| Property, plant and equipment | 590 | 999 | 1,112 | 1,509 | 1,420 | 1,364 | 1,870 | 2,309 | 1,441 | 2,137 | 2,724 | 2,993 | 3,452 |
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| Fixed maturity securities available-for-sale | - | 282 | 214 | 417 | 355 | 391 | 540 | 379 | 606 | 627 | 563 | 344 | 502 |
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| Equity securities | - | - | - | - | - | - | - | - | - | - | 5 | 1 | 2 |
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| Investments other | - | - | - | - | - | - | - | - | - | - | - | 175 | 174 |
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| Property, plant and equipment | 169 | 270 | 412 | 539 | 487 | 700 | 606 | 687 | 537 | 623 | 701 | 739 | 662 |
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| Fixed maturity securities available-for-sale | - | 138 | 108 | 155 | 191 | 165 | 124 | 269 | 529 | 361 | 197 | 672 | 439 |
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| Equity securities | - | - | - | - | - | - | - | - | - | - | 1 | 1 | 11 |
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| Investments, other | - | - | - | - | - | - | - | - | - | - | - | 50 | 122 |
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| Net cash used by investing activities | -577 | -846 | -825 | -1,273 | -1,145 | -897 | -1,571 | -1,767 | -1,130 | -1,867 | -2,421 | 2,046 | -2,891 |
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| Proceeds from Lines of Credit | 238 | 431 | 658 | 856 | 743 | 498 | 897 | 1,121 | 922 | 1,969 | 1,018 | 1,186 | 1,855 |
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| Principal repayments on credit facilities | 202 | 293 | 594 | 428 | 368 | 356 | 300 | 350 | 663 | 438 | 802 | 920 | 852 |
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| Payment of debt issuance costs | 2 | 4 | 12 | 10 | 5 | 5 | 7 | 5 | 6 | 13 | 5 | 4 | 9 |
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| Finance lease payments | - | - | - | - | - | - | - | - | - | - | - | 106 | 73 |
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| Securitization deposits | - | - | - | - | - | - | - | - | - | - | - | 0 | 0 |
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| Common stock dividends paid | 19 | 20 | 20 | 78 | 59 | 29 | 39 | 29 | 49 | 29 | 20 | - | - |
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| Series N Non-Voting Common Stock Dividends | - | - | - | - | - | - | - | - | - | - | 14 | 32 | 35 |
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| Investment contract deposits | 14 | 141 | 123 | 298 | 285 | 402 | 400 | 235 | 518 | 348 | 341 | 360 | 497 |
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| Investment contract withdrawals | 28 | 35 | 54 | 53 | 149 | 183 | 133 | 151 | 214 | 238 | 335 | 419 | 488 |
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| Net cash provided by financing activities | -113 | 168 | -25 | 407 | 224 | 17 | 515 | 512 | 287 | 1,433 | 60 | 67 | 895 |
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| Effects of exchange rate on cash | - | - | - | - | - | - | - | - | - | -2 | -12 | 1 | -4 |
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| Increase (decrease) cash and cash equivalents | - | - | - | - | - | - | - | - | - | 1,510 | -644 | 526 | -546 |
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