I may have been a little overstating things with "hundreds" of trillions, but I did find some quotes on the weeb:

$275 million per day according to this site. $4100 per household per year:

http://www.nationalpriorities.org/co...

According to recent news reports, the war will cost 3 trillion by the time the current debt accumulated is paid off (never mind the next however long it takes to get out):

http://www.mercurynews.com/opinion/c...

It's also costing the U.K. 12 billion a year:

http://news.scotsman.com/uk/Cost-of-...

MR