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Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands | Total | Common stock | Additional paid-in capital | Retained earnings | Accumulated Other Comprehensive Income (Loss) | Unrealized investment gain | Currency Translation Adjustments | Treasury stock | Noncontrolling interest
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Cumulative effect adjustment resulting from changes in accounting principles |  | $ 105,803 | $ 997,534 | $ 10,161,005 | $ (1,264,581) | $ (892,905) | $ (371,676) | $ (3,251,429) | $ 19,829
Beginning of period at Dec. 31, 2022 |  | 105,803 | 997,534 | 10,161,005 | (1,264,581) | (892,905) | (371,676) | (3,251,429) | 19,829
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Restricted stock units issued |  |  | (1,200) |  |  |  |  |  |
Restricted stock units expensed |  |  | 11,794 |  |  |  |  |  |
Net income before noncontrolling interests | $ 295,729 |  |  | 294,126 |  |  |  |  | 1,603
Dividends ($0.11 and $0.60 per share, respectively) |  |  |  | (158,592) |  |  |  |  |
Change in unrealized (losses) gains on securities without an allowance for expected credit losses | 180,799 |  |  |  |  | 177,342 |  |  |
Change in unrealized gains on securities with an allowance for expected credit losses |  |  |  |  |  | 3,456 |  |  |
Net change in period | 4,866 |  |  |  |  |  | 4,866 |  |
Stock exercised/vested |  |  |  |  |  |  |  | 395 |
Stock repurchased |  |  |  |  |  |  |  | (135,152) |
Other | (1,352) |  |  |  |  |  |  |  |
Contributions |  |  |  |  |  |  |  |  | 177
Other comprehensive loss, net of tax | $ 185,665 |  |  |  | 185,665 |  | 4,866 |  | (1)
End of period at Mar. 31, 2023 |  |  | 1,008,128 | 10,296,539 | (1,078,917) | (712,107) | (366,810) | (3,387,538) | 21,608
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Common stock dividends, per share, cash paid (in dollars per share) | $ 0.60 |  |  |  |  |  |  |  |
Cumulative effect adjustment resulting from changes in accounting principles |  |  | 1,008,128 | 10,296,539 | (1,078,917) | (712,107) | (366,810) | (3,387,538) | 21,608
Cumulative effect adjustment resulting from changes in accounting principles | $ 7,469,237 | 105,803 | 1,017,691 | 11,040,908 | (925,838) | (586,354) | (339,484) | (3,783,133) | 13,806
Beginning of period at Dec. 31, 2023 | 7,469,237 | $ 105,803 | 1,017,691 | 11,040,908 | (925,838) | (586,354) | (339,484) | (3,783,133) | 13,806
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Restricted stock units issued |  |  | (195) |  |  |  |  |  |
Restricted stock units expensed |  |  | 12,979 |  |  |  |  |  |
Net income before noncontrolling interests | 442,035 |  |  | 442,471 |  |  |  |  | (436)
Dividends ($0.11 and $0.60 per share, respectively) |  |  |  | (28,221) |  |  |  |  |
Change in unrealized (losses) gains on securities without an allowance for expected credit losses | (70,122) |  |  |  |  | (71,109) |  |  |
Change in unrealized gains on securities with an allowance for expected credit losses |  |  |  |  |  | 987 |  |  |
Net change in period | (27,570) |  |  |  |  |  | (27,570) |  |
Stock exercised/vested |  |  |  |  |  |  |  | 59 |
Stock repurchased |  |  |  |  |  |  |  | 0 |
Other | 0 |  |  |  |  |  |  |  |
Contributions |  |  |  |  |  |  |  |  | 310
Other comprehensive loss, net of tax | (97,692) |  |  |  | (97,692) |  | (27,570) |  | 0
End of period at Mar. 31, 2024 | $ 7,798,512 |  | 1,030,475 | 11,455,158 | (1,023,530) | (656,476) | (367,054) | (3,783,074) | 13,680
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Common stock dividends, per share, cash paid (in dollars per share) | $ 0.11 |  |  |  |  |  |  |  |
Cumulative effect adjustment resulting from changes in accounting principles | $ 7,798,512 |  | $ 1,030,475 | $ 11,455,158 | $ (1,023,530) | $ (656,476) | $ (367,054) | $ (3,783,074) | $ 13,680

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