According to an article from Advertising Age, Proctor and Gamble continued to be the world's biggest buyer of advertising in 2007 (the latest figures available).
In 2007, they spent more than $9.3 billion worldwide on advertising. That's more than $25 million per day and just a little bit more than $1 million per hour.
How many of the items in your household are made by Proctor and Gamble? Look here to see just what they make.