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Schedule II - Condensed Financial Information of Registrant Balance Sheets (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  |  | 6 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 15, 2023 | Aug. 13, 2019 | Sep. 20, 2016 | Jun. 30, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Jun. 30, 2022 | Dec. 31, 2020 | Dec. 31, 2019 | May 02, 2013
ASSETS |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents (including cash within consolidated variable interest entities of — $65.7448377 and $75.15054353) |  |  |  | $ 1,061,500 | $ 959,200 | $ 1,314,100 |  |  |  |
Other investments (equity method) |  |  |  | 213,400 | 221,300 | 151,300 |  |  |  |
Right-of-use operating lease assets |  |  |  |  | 72,800 | 83,400 |  |  |  |
Other assets |  |  |  |  | 7,400 | 8,300 |  |  |  |
Total assets |  |  |  | 15,393,100 | 15,157,300 | 13,844,100 |  |  |  |
LIABILITIES |  |  |  |  |  |  |  |  |  |
Accrued expenses and other payables (4) |  |  |  | 171,400 | 201,800 | 289,300 |  |  |  |
Short-term debt |  |  |  | 299,900 | 299,900 | 0 |  |  |  |
Long-term debt |  |  |  |  | 0 | 299,900 |  |  |  |
Operating lease liabilities |  |  |  | 91,300 | 95,500 | 115,200 |  |  |  |
Total liabilities |  |  |  | 12,844,400 | 12,799,300 | 11,069,300 |  |  |  |
SHAREHOLDERS’ EQUITY |  |  |  |  |  |  |  |  |  |
60,395,839 ordinary shares of par value $0.01 each (December 31, 2021 — 60,395,839 shares) |  |  |  | 604 | 604 | 604 |  |  |  |
Additional paid in capital |  |  |  |  | 1,514,700 | 1,514,700 |  |  |  |
Retained earnings |  |  |  | 1,525,700 | 1,349,000 | 1,382,500 |  |  |  |
Total accumulated other comprehensive (loss) |  |  |  | (492,300) | (506,300) | (123,000) | $ (435,000) | $ 19,700 |  |
Total liabilities and shareholders’ equity |  |  |  | $ 15,393,100 | $ 15,157,300 | $ 13,844,100 |  |  |  |
Ordinary shares, issued |  |  |  | 60,395,839 | 60,395,839 | 60,395,839 |  |  |  |
Ordinary shares, par value |  |  |  | $ 0.01 | $ 0.01 | $ 0.01 |  |  |  |
Preference shares, par value |  |  |  | $ 0.0015144558 | $ 0.0015144558 |  |  |  |  |
5.950% Preference Shares (AHL PRC) |  |  |  |  |  |  |  |  |  |
SHAREHOLDERS’ EQUITY |  |  |  |  |  |  |  |  |  |
Preference shares, issued |  |  |  | 11,000,000 | 11,000,000 | 11,000,000 |  |  |  | 11,000,000
Preference shares, rate | 5.95% |  |  | 5.95% | 5.95% | 5.95% |  |  |  |
Preference shares, par value |  |  |  | $ 0.0015144558 | $ 0.0015144558 | $ 0.0015144558 |  |  |  |
5.625% Preference Shares (AHL PRD) |  |  |  |  |  |  |  |  |  |
SHAREHOLDERS’ EQUITY |  |  |  |  |  |  |  |  |  |
Preference shares, issued |  |  | 10,000,000 | 10,000,000 | 10,000,000 | 10,000,000 |  |  |  |
Preference shares, rate | 5.625% |  | 5.625% | 5.625% | 5.625% | 5.625% |  |  |  |
Preference shares, par value |  |  |  | $ 0.0015144558 | $ 0.0015144558 | $ 0.0015144558 |  |  |  |
5.625% Preference Shares (AHL PRE) |  |  |  |  |  |  |  |  |  |
SHAREHOLDERS’ EQUITY |  |  |  |  |  |  |  |  |  |
Preference shares, issued |  | 10,000,000 |  | 10,000,000 | 10,000,000 | 10,000,000 |  |  |  |
Preference shares, rate | 5.625% | 5.625% |  | 5.625% | 5.625% | 5.625% |  |  |  |
Preference shares, par value |  |  |  | $ 0.0015144558 | $ 0.0015144558 | $ 0.0015144558 |  |  |  |
Parent Company |  |  |  |  |  |  |  |  |  |
ASSETS |  |  |  |  |  |  |  |  |  |
Fixed income maturities, trading at fair value (amortized cost — $1,106.6 and $1,205.0) |  |  |  |  | $ 40,500 | $ 42,600 |  |  |  |
Cash and cash equivalents (including cash within consolidated variable interest entities of — $65.7448377 and $75.15054353) |  |  |  |  | 44,400 | 45,000 |  | $ 92,400 | $ 37,400 |
Investments in subsidiaries (1) |  |  |  |  | 2,767,900 | 3,142,000 |  |  |  |
Intercompany funds due from affiliates |  |  |  |  | 1,700 | 1,300 |  |  |  |
Right-of-use operating lease assets |  |  |  |  | 2,000 | 2,500 |  |  |  |
Other assets |  |  |  |  | 5,900 | 8,000 |  |  |  |
Total assets |  |  |  |  | 2,862,400 | 3,241,400 |  |  |  |
LIABILITIES |  |  |  |  |  |  |  |  |  |
Accrued expenses and other payables (4) |  |  |  |  | 22,300 | 25,500 |  |  |  |
Intercompany funds due to affiliates |  |  |  |  | 180,500 | 139,000 |  |  |  |
Short-term debt |  |  |  |  | 299,900 | 0 |  |  |  |
Long-term debt |  |  |  |  | 0 | 299,900 |  |  |  |
Operating lease liabilities |  |  |  |  | 1,700 | 2,200 |  |  |  |
Total liabilities |  |  |  |  | 504,400 | 466,600 |  |  |  |
SHAREHOLDERS’ EQUITY |  |  |  |  |  |  |  |  |  |
60,395,839 ordinary shares of par value $0.01 each (December 31, 2021 — 60,395,839 shares) |  |  |  |  | 600 | 600 |  |  |  |
Additional paid in capital |  |  |  |  | 1,514,700 | 1,514,700 |  |  |  |
Retained earnings |  |  |  |  | 1,349,000 | 1,382,500 |  |  |  |
Unrealized (loss)/gains on investments |  |  |  |  | (333,200) | 34,600 |  |  |  |
(Loss)/gain on derivatives |  |  |  |  | 13,800 | (1,600) |  |  |  |
Gains on foreign currency translation (start of period) |  |  |  | $ (186,900) | (156,000) |  |  |  |  |
Gains on foreign currency translation (end of period) |  |  |  |  | (186,900) | (156,000) |  |  |  |
Total accumulated other comprehensive (loss) |  |  |  |  | (506,300) | (123,000) |  |  |  |
Total shareholders’ equity |  |  |  |  | 2,358,000 | 2,774,800 |  |  |  |
Total liabilities and shareholders’ equity |  |  |  |  | $ 2,862,400 | $ 3,241,400 |  |  |  |
Ordinary shares, issued |  |  |  |  | 60,395,839 | 60,395,839 |  |  |  |
Ordinary shares, par value |  |  |  |  | $ 0.0001 | $ 0.0001 |  |  |  |

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