Pension data for Millington Enterprises include the following: ($ in millions) Discount rate, 10% Projected benefit obligation, January 1 $360 Projected benefit obligation, December 31 465 Accumulated benefit obligation, January 1 300 Accumulated benefit obligation, December 31 415 Cash contributions to pension fund, December 31 150 Benefit payments to retirees, December 31 54 Required: Assuming no change in actuarial assumptions and estimates, determine the service cost component of pension expense for the year ended December 31