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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 losses: | Currency Translation Adjustments | Treasury stock | Noncontrolling interest
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Cumulative effect adjustment resulting from changes in accounting principles |  | $ 158,705 | $ 944,632 | $ 10,161,005 | $ (1,264,581) | $ (892,905) | $ (371,676) | $ (3,251,429) | $ 19,829
Beginning of period at Dec. 31, 2022 |  | 158,705 | 944,632 | 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 |  |  | (2) |  |  |  |  |  |
Restricted stock units expensed |  |  | 23,286 |  |  |  |  |  |
Net income before noncontrolling interests | $ 651,453 |  |  | 650,434 |  |  |  |  | 1,019
Dividends ($0.41, $0.07, $0.49 and $0.47 per share, respectively) |  |  |  | (186,921) |  |  |  |  |
Change in unrealized (losses) gains on securities without an allowance for expected credit losses | 67,515 |  |  |  |  | 60,364 |  |  |
Change in unrealized (losses) gains on securities with an allowance for expected credit losses |  |  |  |  |  | 7,150 |  |  |
Net change in period | 15,394 |  |  |  |  |  | 15,394 |  |
Stock exercised/vested |  |  |  |  |  |  |  | 992 |
Stock repurchased |  |  |  |  |  |  |  | (427,619) |
Other | (4,225) |  |  |  |  |  |  |  |
(Distribution) contributions |  |  |  |  |  |  |  |  | 320
Other comprehensive income (loss), net of tax | $ 82,909 |  |  |  | 82,909 | 67,515 | 15,394 |  | (1)
End of period at Jun. 30, 2023 |  |  | 967,916 | 10,624,518 | (1,181,673) | (825,391) | (356,282) | (3,682,281) | 21,167
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Common stock dividends, per share, cash paid (in dollars per share) | $ 0.47 |  |  |  |  |  |  |  |
Cumulative effect adjustment resulting from changes in accounting principles |  | 158,705 | 955,226 | 10,296,539 | (1,078,917) | (712,107) | (366,810) | (3,387,538) | 21,608
Beginning of period at Mar. 31, 2023 |  | 158,705 | 955,226 | 10,296,539 | (1,078,917) | (712,107) | (366,810) | (3,387,538) | 21,608
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Restricted stock units issued |  |  | 1,198 |  |  |  |  |  |
Restricted stock units expensed |  |  | 11,492 |  |  |  |  |  |
Net income before noncontrolling interests | $ 355,724 |  |  | 356,308 |  |  |  |  | (584)
Dividends ($0.41, $0.07, $0.49 and $0.47 per share, respectively) |  |  |  | (28,329) |  |  |  |  |
Change in unrealized (losses) gains on securities without an allowance for expected credit losses | (113,284) |  |  |  |  | (116,978) |  |  |
Change in unrealized (losses) gains on securities with an allowance for expected credit losses |  |  |  |  |  | 3,694 |  |  |
Net change in period | 10,528 |  |  |  |  |  | 10,528 |  |
Stock exercised/vested |  |  |  |  |  |  |  | 597 |
Stock repurchased |  |  |  |  |  |  |  | (292,467) |
Other | (2,873) |  |  |  |  |  |  |  |
(Distribution) contributions |  |  |  |  |  |  |  |  | 143
Other comprehensive income (loss), net of tax | $ (102,756) |  |  |  | (102,756) | (113,284) | 10,528 |  | 0
End of period at Jun. 30, 2023 |  |  | 967,916 | 10,624,518 | (1,181,673) | (825,391) | (356,282) | (3,682,281) | 21,167
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Common stock dividends, per share, cash paid (in dollars per share) | $ 0.07 |  |  |  |  |  |  |  |
Cumulative effect adjustment resulting from changes in accounting principles |  |  | 967,916 | 10,624,518 | (1,181,673) | (825,391) | (356,282) | (3,682,281) | 21,167
Cumulative effect adjustment resulting from changes in accounting principles | $ 7,469,237 | 158,705 | 964,789 | 11,040,908 | (925,838) | (586,354) | (339,484) | (3,783,133) | 13,806
Beginning of period at Dec. 31, 2023 | 7,469,237 | 158,705 | 964,789 | 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 |  |  | (3,145) |  |  |  |  |  |
Restricted stock units expensed |  |  | 25,248 |  |  |  |  |  |
Net income before noncontrolling interests | 813,920 |  |  | 814,380 |  |  |  |  | (460)
Dividends ($0.41, $0.07, $0.49 and $0.47 per share, respectively) |  |  |  | (185,721) |  |  |  |  |
Change in unrealized (losses) gains on securities without an allowance for expected credit losses | (83,460) |  |  |  |  | (76,763) |  |  |
Change in unrealized (losses) gains on securities with an allowance for expected credit losses |  |  |  |  |  | (6,696) |  |  |
Net change in period | (24,343) |  |  |  |  |  | (24,343) |  |
Stock exercised/vested |  |  |  |  |  |  |  | 1,324 |
Stock repurchased |  |  |  |  |  |  |  | (223,763) |
Other | (2,170) |  |  |  |  |  |  |  |
(Distribution) contributions |  |  |  |  |  |  |  |  | (78)
Other comprehensive income (loss), net of tax | (107,803) |  |  |  | (107,803) | (83,460) | (24,343) |  | 1
End of period at Jun. 30, 2024 | $ 7,787,051 |  | 986,892 | 11,669,567 | (1,033,640) | (669,813) | (363,827) | (4,007,742) | 13,269
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Common stock dividends, per share, cash paid (in dollars per share) | $ 0.49 |  |  |  |  |  |  |  |
Cumulative effect adjustment resulting from changes in accounting principles |  | 158,705 | 977,573 | 11,455,158 | (1,023,530) | (656,476) | (367,054) | (3,783,074) | 13,680
Beginning of period at Mar. 31, 2024 |  | $ 158,705 | 977,573 | 11,455,158 | (1,023,530) | (656,476) | (367,054) | (3,783,074) | 13,680
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Restricted stock units issued |  |  | (2,950) |  |  |  |  |  |
Restricted stock units expensed |  |  | 12,269 |  |  |  |  |  |
Net income before noncontrolling interests | $ 371,885 |  |  | 371,909 |  |  |  |  | (24)
Dividends ($0.41, $0.07, $0.49 and $0.47 per share, respectively) |  |  |  | (157,500) |  |  |  |  |
Change in unrealized (losses) gains on securities without an allowance for expected credit losses | (13,338) |  |  |  |  | (5,654) |  |  |
Change in unrealized (losses) gains on securities with an allowance for expected credit losses |  |  |  |  |  | (7,683) |  |  |
Net change in period | 3,227 |  |  |  |  |  | 3,227 |  |
Stock exercised/vested |  |  |  |  |  |  |  | 1,265 |
Stock repurchased |  |  |  |  |  |  |  | (223,763) |
Other | (2,170) |  |  |  |  |  |  |  |
(Distribution) contributions |  |  |  |  |  |  |  |  | (388)
Other comprehensive income (loss), net of tax | (10,111) |  |  |  | (10,111) | (13,338) | 3,227 |  | 1
End of period at Jun. 30, 2024 | $ 7,787,051 |  | 986,892 | 11,669,567 | (1,033,640) | (669,813) | (363,827) | (4,007,742) | 13,269
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Common stock dividends, per share, cash paid (in dollars per share) | $ 0.41 |  |  |  |  |  |  |  |
Cumulative effect adjustment resulting from changes in accounting principles | $ 7,787,051 |  | $ 986,892 | $ 11,669,567 | $ (1,033,640) | $ (669,813) | $ (363,827) | $ (4,007,742) | $ 13,269

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