Contingencies	12 Months Ended
Contingencies	Dec. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Contingencies	Contingencies Legal Proceedings Lawsuits arise in the ordinary course of the Company’s business. It is the opinion of the Company’s management, based upon the information available, that the expected outcome of litigation against the Company, individually or in the aggregate, will not have a material adverse effect on the Company’s financial position, although an adverse resolution of litigation against the Company in a fiscal quarter or year could have a material adverse effect on the Company’s results of operations or liquidity in that particular quarter or year. In addition, in the ordinary course of their respective businesses, certain of AGL’s insurance subsidiaries are involved in litigation with third parties to recover insurance losses paid in prior periods or prevent or reduce losses in the future. For example, the Company is involved in a number of legal actions in the Federal District Court of Puerto Rico to enforce or defend its rights with respect to the obligations it insures of Puerto Rico and its related PREPA. There remains one active proceeding related to PREPA, while there are a number of unresolved proceedings related to PREPA that remain stayed pending the Federal District Court of Puerto Rico’s determination on the FOMB PREPA Plan. See Note 4, Expected Loss to be Paid (Recovered), Loss Estimation Process, Public Finance, Puerto Rico, for a description of such actions. The impact, if any, of these and other proceedings on the amount of recoveries the Company receives and losses it pays in the future is uncertain, and the impact of any one or more of these proceedings during any quarter or year could be material to the Company’s results of operations in that particular quarter or year. The Company also receives subpoenas and interrogatories from regulators from time to time. Accounting Policy The Company establishes accruals for litigation and regulatory matters to the extent it is probable that a loss has been incurred and the amount of that loss can be reasonably estimated. Additionally, it discloses such amounts if material to the financial position of the Company. For litigation and regulatory matters where a loss may be reasonably possible but not probable, or is probable but not reasonably estimable, no accrual is established, but the matter would be disclosed below if material. The Company reviews relevant information with respect to its litigation and regulatory matters on a quarterly basis and updates its accruals, disclosures, and estimates of reasonably possible loss based on such reviews. Litigation On November 28, 2011, Lehman Brothers International (Europe) (in administration) (LBIE) sued AG Financial Products Inc. (AGFP), an affiliate of AG, which, in the past, had provided credit protection to counterparties under CDS. Following defaults by LBIE under transaction documents governing CDS between LBIE and AGFP, AGFP terminated the CDS in compliance with the transaction documents and properly calculated that LBIE owed AGFP approximately $25 million in connection with the termination, whereas LBIE asserted in its complaint filed in the Supreme Court of the State of New York (the Court) that AGFP owed LBIE a termination payment of approximately $1.4 billion. Following a bench trial, on March 8, 2023, the Court rendered its decision and found in favor of AGFP. Accordingly, in the first quarter of 2023, the Company reduced its previously recorded accrual of $20 million to zero, in connection with developments in litigation. Following the exhaustion of LBIE’s appeals, the Company will recognize a gain in the first quarter of 2025 of approximately $103 million, which represents the full satisfaction of the judgment it was awarded and its claims for attorneys’ fees, expenses and interest in connection with this litigation.