Yes, I did mean 500 bill......check out the Bureau of Public Debt.......and even though the fedgov is using Soc. Sec. surpluses to reduce the amount they borrow 'today', according to the OMB report from '99 those $ represent a future claim against the Treasury.....which seems to be a fancy way of saying it's a debt that'll need to be repaid at some point.....so they're just shuffling off current debt exposure to repayment some point down the road......at our kids expense of course.
Except the courts have already ruled you have no ownership right to your Social Security. It might be more precise to say the Federal government's borrowing needs are reduced by the money they steal from Social Security.