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Rating Actions
12 Months Ended
Dec. 31, 2014
Rating Actions [Abstract]  
Rating Actions
Rating Actions

When a rating agency assigns a public rating to a financial obligation guaranteed by one of AGL’s insurance company subsidiaries, it generally awards that obligation the same rating it has assigned to the financial strength of the AGL subsidiary that provides the guaranty. Investors in products insured by AGL’s insurance company subsidiaries frequently rely on ratings published by the rating agencies because such ratings influence the trading value of securities and form the basis for many institutions’ investment guidelines as well as individuals’ bond purchase decisions. Therefore, the Company manages its business with the goal of achieving strong financial strength ratings. However, the methodologies and models used by rating agencies differ, presenting conflicting goals that may make it inefficient or impractical to reach the highest rating level. The methodologies and models are not fully transparent, contain subjective elements and data (such as assumptions about future market demand for the Company’s products) and change frequently. Ratings are subject to continuous review and revision or withdrawal at any time. If the financial strength ratings of one (or more) of the Company’s insurance subsidiaries were reduced below current levels, the Company expects it could have adverse effects on the impacted subsidiary's future business opportunities as well as the premiums the impacted subsidiary could charge for its insurance policies.     
In the last several years, Standard & Poor's Ratings Services ("S&P") and Moody's Investors Service, Inc. ("Moody's") have changed, multiple times, their financial strength ratings of the Company's insurance subsidiaries, or changed the outlook on such ratings. More recently, Kroll Bond Rating Agency ("KBRA") has assigned financial strength ratings to some of the Company's insurance subsidiaries. The rating agencies' most recent actions and proposals related to the Company's insurance subsidiaries are:

On March 18, 2014, S&P upgraded the financial strength ratings of all of AGL's insurance subsidiaries to AA (stable outlook) from AA- (stable outlook); it affirmed such ratings in a credit analysis issued on July 2, 2014.

On July 2, 2014, Moody's affirmed the ratings of AGL and its subsidiaries, but changed to negative the outlook of the financial strength ratings of AGC and its subsidiary Assured Guaranty (UK) Ltd. ("AGUK").

On August 4, 2014, KBRA affirmed MAC's AA+ (stable outlook) financial strength rating.

On November 13, 2014, KBRA assigned a financial strength rating of AA+ (stable outlook) to AGM.

On January 20, 2015, Moody's adopted changes to its credit methodology for financial guaranty insurance companies, and on February 18, 2015 Moody's published a credit opinion maintaining its existing ratings of AGL and its subsidiaries under that new methodology.
  
There can be no assurance that any of the rating agencies will not take negative action on their financial strength ratings of the Company's insurance subsidiaries in the future.

For a discussion of the effects of rating actions on the Company, see the following:

Note 7, Financial Guaranty Insurance Losses
Note 9, Financial Guaranty Contracts Accounted for as Credit Derivatives
Note 14, Reinsurance and Other Monoline Exposures
Note 17, Long-Term Debt and Credit Facilities (regarding the impact on the Company's insured leveraged lease transactions)