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Shareholders' Equity | 3 Months Ended
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Mar. 31, 2026
Equity [Abstract] |
Shareholders' Equity | Shareholders’ Equity Other Comprehensive Income The following tables present the changes in each component of accumulated other comprehensive income (AOCI) and the effect of reclassifications out of AOCI into the respective lines in the condensed consolidated statements of operations. Changes in Accumulated Other Comprehensive Income (Loss) by Component First Quarter 2026
| Net Unrealized Gains (Losses) on Investments with: |  | ISCR on FG VIEs’ Liabilities with Recourse |  | Change in Discount Rates on the LFPB |  | Cumulative Translation Adjustment |  | Cash Flow Hedge |  | Total AOCI
| No Credit Impairment |  | Credit Impairment |  |  |  |  |
| (in millions)
Balance, December 31, 2025 | $ | (48) |  |  | $ | (72) |  |  | $ | (17) |  |  | $ | — |  |  | $ | (35) |  |  | $ | 4 |  |  | $ | (168) |
Other comprehensive income (loss) before reclassifications | (83) |  |  | (57) |  |  | — |  |  | 17 |  |  | (1) |  |  | — |  |  | (124) |
Less: Amounts reclassified from AOCI to: |  |  |  |  |  |  |  |  |  |  |  |  |
Net realized investment gains (losses) | 1 |  |  | (16) |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (15) |
Total before tax | 1 |  |  | (16) |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (15) |
Tax (provision) benefit | — |  |  | 3 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 3 |
Total amount reclassified from AOCI, net of tax | 1 |  |  | (13) |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (12) |
Other comprehensive income (loss) | (84) |  |  | (44) |  |  | — |  |  | 17 |  |  | (1) |  |  | — |  |  | (112) |
Balance, March 31, 2026 | $ | (132) |  |  | $ | (116) |  |  | $ | (17) |  |  | $ | 17 |  |  | $ | (36) |  |  | $ | 4 |  |  | $ | (280) |
Changes in Accumulated Other Comprehensive Income (Loss) by Component First Quarter 2025
| Net Unrealized Gains (Losses) on Investments with: |  | ISCR on FG VIEs’ Liabilities with Recourse |  | Cumulative Translation Adjustment |  | Cash Flow Hedge |  | Total AOCI
| No Credit Impairment |  | Credit Impairment |  |  |  |
| (in millions)
Balance, December 31, 2024 | $ | (235) |  |  | $ | (99) |  |  | $ | (18) |  |  | $ | (37) |  |  | $ | 4 |  |  | $ | (385) |
Other comprehensive income (loss) before reclassifications | 46 |  |  | 13 |  |  | (1) |  |  | (1) |  |  | — |  |  | 57 |
Less: Amounts reclassified from AOCI to: |  |  |  |  |  |  |  |  |  |  |
Net realized investment gains (losses) | (6) |  |  | (10) |  |  | — |  |  | — |  |  | — |  |  | (16) |
Total before tax | (6) |  |  | (10) |  |  | — |  |  | — |  |  | — |  |  | (16) |
Tax (provision) benefit | — |  |  | 2 |  |  | — |  |  | — |  |  | — |  |  | 2 |
Total amount reclassified from AOCI, net of tax | (6) |  |  | (8) |  |  | — |  |  | — |  |  | — |  |  | (14) |
Other comprehensive income (loss) | 52 |  |  | 21 |  |  | (1) |  |  | (1) |  |  | — |  |  | 71 |
Balance, March 31, 2025 | $ | (183) |  |  | $ | (78) |  |  | $ | (19) |  |  | $ | (38) |  |  | $ | 4 |  |  | $ | (314) |
Share Repurchases The following table presents information regarding AGL’s repurchases of its common shares during the period from January 1, 2025 through May 6, 2026. Share Repurchases
Period |  | Number of Shares Repurchased |  | Total Payments (1) (in millions) |  | Average Price Paid Per Share (1)
2025 (January 1 - March 31) |  | 1,335,228 |  |  | $ | 120 |  |  | $ | 89.72 |
2025 (April 1 - June 30) |  | 1,537,505 |  |  | 131 |  |  | 85.03 |
2025 (July 1 - September 30) |  | 1,423,121 |  |  | 118 |  |  | 83.06 |
2025 (October 1 - December 31) |  | 1,523,773 |  |  | 131 |  |  | 86.16 |
Total 2025 |  | 5,819,627 |  |  | $ | 500 |  |  | $ | 85.92 |
2026 (January 1 - March 31) |  | 881,981 |  |  | 75 |  |  | 85.58 |
2026 (April 1 - May 6) |  | 349,639 |  |  | 29 |  |  | 82.67 |
Total 2026 |  | 1,231,620 |  |  | $ | 104 |  |  | $ | 84.76 |
____________________ (1) Excludes commissions. As of May 6, 2026, AGL was authorized to repurchase an additional $147 million of its common shares. The Board of Directors may modify, suspend or terminate the repurchase program at any time, and the program does not have a stated expiration date. As part of its overall capital management strategy, the Company regularly evaluates the level of its share repurchase program on a quarter-to-quarter basis, including alternative uses of available capital. The Company currently plans to reduce its share repurchases in order to use a portion of its available capital to support growth opportunities in its financial guaranty insurance and annuity reinsurance businesses, in addition to other strategic considerations. The timing, form and amount of any future share repurchases will be determined at the Company’s discretion and will depend on various factors, including alternative uses for capital, the Company’s regulatory capital position, rating agency capital considerations, availability of cash at the parent company, market conditions and legal and regulatory requirements. Any such share repurchases may be made from time to time through open market purchases or privately negotiated transactions, and there can be no assurance of the amount of share repurchases that will occur in the future.

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