This excerpt taken from the T 10-K filed Feb 26, 2007.
Estimated Future Benefit Payments
Expected benefit payments are estimated using the same assumptions used in determining our benefit obligation at December 31, 2006. Because benefit payments will depend on future employment and compensation levels, average years employed and average life spans, among other factors, changes in any of these factors could significantly affect these expected amounts. The following table provides expected benefit payments under our pension and postretirement plans: