Required information Problem 17-16 (Algo) Comprehensive-reporting a pension plan; pension spreadsheet; determine changes in balances; two years [LO17-3, 17-4, 17-5, 17-6, 17-7, 17-8] [The following information applies to the questions displayed below.] Actuary and trustee reports indicate the following changes in the PBO and plan assets of Lakeside Cable during 2021: Prior service cost at Jan. 1, 2021, from plan amendment at the beginning of 2019 (amortization: $6 million per year) Net loss-pensions at Jan.1, 2021 (previous losses exceeded previous gains) Average remaining service life of the active employee group Actuary's discount rate $42 million $60 million 10 years 8% ($ in millions) Beginning of 2021 Service cost Interest cost, 8% Loss (gain) on PBO Less: Retiree benefits End of 2021 PBO $400 58 32 Beginning of 2021 Return on plan assets, 7.5% (10% expected) (3) Cash contributions (37) $450 Less: Retiree benefits End of 2021 Plan Assets $200 15 72 (37) $250 Assume the following actuary and trustee reports indicating changes in the PBO and plan assets of Lakeside Cable during