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Parent Company - Condensed Balance Sheets (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Condensed Balance Sheet Statements, Captions [Line Items] |  |
Other assets | $ 597 | $ 470
Total assets | 16,843 | 18,208
Other liabilities | 457 | 569
Total liabilities | 11,551 | 11,708
Total shareholders’ equity attributable to AGL | 5,064 | 6,292
Total liabilities, redeemable noncontrolling interests and shareholders’ equity | 16,843 | 18,208
Assured Guaranty Ltd. (Parent) |  |
Condensed Balance Sheet Statements, Captions [Line Items] |  |
Investments | 26 | 188
Investments in subsidiaries | 4,984 | 5,994
Dividends receivable from subsidiaries | 18 | 81
Other assets | 58 | 46
Total assets | 5,086 | 6,309
Other liabilities | 22 | 17
Total liabilities | 22 | 17
Total shareholders’ equity attributable to AGL | 5,064 | 6,292
Total liabilities, redeemable noncontrolling interests and shareholders’ equity | $ 5,086 | $ 6,309

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