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Schedule II - Condensed Financial Information of Registrant Balance Sheets (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Aug. 13, 2019 | Sep. 20, 2016 | May 02, 2013 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
ASSETS |  |  |  |  |  |  |
Cash and cash equivalents (including cash within consolidated variable interest entities of — $65.7448377 and $75.15054353) |  |  |  | $ 1,028,100 | $ 959,200 |  |
Right-of-use operating lease assets |  |  |  | 61,600 | 72,800 |  |
Other assets |  |  |  | 309,600 | 384,200 |  |
Total assets |  |  |  | 15,224,800 | 15,157,300 |  |
LIABILITIES |  |  |  |  |  |  |
Accrued expenses and other payables (4) |  |  |  | 214,400 | 201,800 |  |
Long-term debt |  |  |  | 300,000 | 0 |  |
Short-term debt |  |  |  | 0 | 299,900 |  |
Operating lease liabilities |  |  |  | 86,100 | 95,500 |  |
Total liabilities |  |  |  | 12,316,300 | 12,799,300 |  |
SHAREHOLDERS’ EQUITY |  |  |  |  |  |  |
60,395,839 ordinary shares of par value $0.01 each (December 31, 2021 — 60,395,839 shares) |  |  |  | 604 | 604 |  |
Preference shares, value |  |  |  | 753,500 | 753,500 |  |
Additional paid in capital |  |  |  | 761,200 | 761,200 |  |
Retained earnings |  |  |  | 1,793,500 | 1,349,000 |  |
Unrealized (loss)/gains on investments |  |  |  | (227,600) | (333,200) |  |
Total accumulated other comprehensive (loss) |  |  |  | (400,300) | (506,300) | $ (123,000) |
Total shareholders’ equity |  |  |  | 2,908,500 | 2,358,000 |  |
Total liabilities and shareholders’ equity |  |  |  | $ 15,224,800 | $ 15,157,300 |  |
Ordinary shares, issued |  |  |  | 60,395,839 | 60,395,839 |  |
Ordinary shares, par value |  |  |  | $ 0.01 | $ 0.01 |  |
Preference shares, par value |  |  |  | $ 0.0015144558 |  |  |
5.950% Preference Shares (AHL PRC) |  |  |  |  |  |  |
SHAREHOLDERS’ EQUITY |  |  |  |  |  |  |
Preference shares, issued |  |  | 11,000,000 | 11,000,000 | 11,000,000 |  |
Preference shares, rate |  |  | 5.95% | 5.95% | 5.95% |  |
Preference shares, par value |  |  |  | $ 0.0015144558 | $ 0.0015144558 |  |
5.625% Preference Shares (AHL PRD) |  |  |  |  |  |  |
SHAREHOLDERS’ EQUITY |  |  |  |  |  |  |
Preference shares, issued |  | 10,000,000 |  | 10,000,000 | 10,000,000 |  |
Preference shares, rate |  | 5.625% |  | 5.625% | 5.625% |  |
Preference shares, par value |  |  |  | $ 0.0015144558 | $ 0.0015144558 |  |
5.625% Preference Shares (AHL PRE) |  |  |  |  |  |  |
SHAREHOLDERS’ EQUITY |  |  |  |  |  |  |
Preference shares, issued | 10,000,000 |  |  | 10,000,000 | 10,000,000 |  |
Preference shares, rate | 5.625% |  |  | 5.625% | 5.625% |  |
Preference shares, par value |  |  |  | $ 0.0015144558 | $ 0.0015144558 |  |
Parent Company |  |  |  |  |  |  |
ASSETS |  |  |  |  |  |  |
Fixed income maturities, trading at fair value (amortized cost — $1,106.6 and $1,205.0) |  |  |  | $ 43,200 | $ 40,500 |  |
Cash and cash equivalents (including cash within consolidated variable interest entities of — $65.7448377 and $75.15054353) |  |  |  | 43,500 | 44,400 | $ 45,000 | $ 92,400
Investments in subsidiaries (1) |  |  |  | 3,284,200 | 2,767,900 |  |
Other receivables |  |  |  | 4,300 | 1,700 |  |
Right-of-use operating lease assets |  |  |  | 1,500 | 2,000 |  |
Other assets |  |  |  | 5,600 | 5,900 |  |
Total assets |  |  |  | 3,382,300 | 2,862,400 |  |
LIABILITIES |  |  |  |  |  |  |
Accrued expenses and other payables (4) |  |  |  | 27,800 | 22,300 |  |
Other Liabilities |  |  |  | 144,700 | 180,500 |  |
Long-term debt |  |  |  | 300,000 | 0 |  |
Short-term debt |  |  |  | 0 | 299,900 |  |
Operating lease liabilities |  |  |  | 1,300 | 1,700 |  |
Total liabilities |  |  |  | 473,800 | 504,400 |  |
SHAREHOLDERS’ EQUITY |  |  |  |  |  |  |
60,395,839 ordinary shares of par value $0.01 each (December 31, 2021 — 60,395,839 shares) |  |  |  | 600 | 600 |  |
Preference shares, value |  |  |  | 753,500 | 753,500 |  |
Additional paid in capital |  |  |  | 761,200 | 761,200 |  |
Retained earnings |  |  |  | 1,793,500 | 1,349,000 |  |
(Loss)/gain on derivatives |  |  |  | (200) | 13,800 |  |
Gains on foreign currency translation (start of period) |  |  |  | (186,900) |  |  |
Gains on foreign currency translation (end of period) |  |  |  | (172,500) | (186,900) |  |
Total accumulated other comprehensive (loss) |  |  |  | (400,300) | (506,300) |  |
Total liabilities and shareholders’ equity |  |  |  | $ 3,382,300 | $ 2,862,400 |  |

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