The Deepwater Horizon oil spill (also referred to as the BP oil disaster) is an industrial disaster that began on 20 April 2010, in the Gulf of Mexico on the BP-operated Macondo Prospect, considered to be the largest marine oil spill in the history of the petroleum industry. The U.S. government estimated the total discharge at 4.9 million barrels. How do you expect BP to account for this disaster in its 2010 financial statements?