Pension data for David Emerson Enterprises include the following:
($ in millions)
Discount rate, 10%
Projected benefit obligation, January 1 $320
Projected benefit obligation, December 31 500
Accumulated benefit obligation, January 1 335
Accumulated benefit obligation, December 31 450
Cash contributions to pension fund, December 31 185
Benefit payments to retirees, December 31 61
Required:
Assuming no change in actuarial assumptions and estimates, determine the service cost component of pension expense for the year ended December 31.