Subsequent Events	9 Months Ended
Sep. 30, 2012
Subsequent Events [Abstract]
Subsequent Events	Note 13 – Subsequent Events Subsequent to the balance sheet date, Hurricane Sandy affected portions of the Caribbean, Mid-Atlantic and Northeastern United States in late October 2012, with lesser impact in the Southeastern and Midwestern states. In our U.S. operations, we have insured properties in our E&S Division as well as two programs in our ART Division that may have exposure. In our Reinsurance Division, we have potential exposure under a property catastrophe retrocession treaty. It is too early to estimate the impact to ASI and the consolidated financial statements, if any.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

No definition available.

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