Subsequent event

12 Months Ended

Dec. 31, 2016

Subsequent Events [Abstract]

Subsequent event

(25) Subsequent event

In January 2017, NICO entered into a retroactive reinsurance agreement with various subsidiaries of American International Group, Inc. (collectively, “AIG”). Under the agreement, NICO agreed to indemnify AIG for 80% of up to $25 billion, excess of $25 billion retained by AIG, of losses and allocated loss adjustment expenses with respect to certain commercial insurance loss events occurring in years prior to 2016 for a premium of about $10 billion. Berkshire has agreed to guarantee all amounts due to AIG under the agreement.