If someone says, “I don’t give a damn” about something, it means, “I don’t care” about something. They are saying it’s not important and it’s not interesting in their opinion. It also means something like, “That doesn’t matter to me at all”.
This term is usually used when someone is trying to describe a person or a company who has the ability to invest a lot of money.
“Rich” is used when someone has a lot of money to spend. “Deep pockets” is used when someone has a lot of money to invest to make their business grow bigger.
ideas from: http://www.speak-fluent-english.com/