Tried it, didn't work out so well. The problem is that a lot of these people are doing actual work too. So you get situations where Department A needs the Int

Tried it, didn't work out so well. The problem is that a lot of these people are doing actual work too. So you get situations where Department A needs the Internet because their applications are web based and Department B has all desktop apps. If you then choose to charge Dept A. accordingly they balk because they are being penalized simply because their applications are on the web. Also keep in mind that an IT department doesn't want to become the Internet police. Which is exactly what happens when you try to charge individual departments because they rightfully claim they can't watch their employees every second to see if they are using the Internet for personal use. Meaning it turns into a big hassle where you have to comb through firewall logs identifying each employee and how much internet they used and then create a report based on that. All in all it's a good idea in theory but one I haven't found a way to implement in practice.