On July 14th last, it was reported on the BBC website that the total cost to BP of the Deepwater Horizon oil spill back in 2010 was totalling $61.6 billion – quite an amount. If you look back at the media websites/newspapers over the years you will see the amount rising over time.
Just out of curiosity, I had a look at the most recent financial statements of BP to see what they include on this. Two things came to mind before I looked at the accounts 1) the amounts involved here are material and 2) it spans many reporting periods, so IAS 10 Events after the Reporting Period would probably kick in. Looking at the accounts to 31.12.2015, they contain a separate note which itemises the events of the event on each of the three financial statements. You can see the accounts here – look at note 2. It is quite detailed and I do like how they have shown the effects, and the note is quite detailed. It is not very often such significant events occur, and as far as I can see BP have done a good job on this note. It certainly should provide an investor with enough information to decide whether to invest in the company or not – a key criteria of what financial statements should do.