Lacy Construction has a noncontributory, defined benefit pension plan

Lacy Construction has a noncontributory, defined benefit pension plan. At December 31, 2021, Lacy received the following information: 
Projected Benefit Obligation Balance, January 1 Service cost Prior service cost Interest cost(6.0%) Benefits paid 
($ 
in millions) $ 600 64 16 36 (47) 
Balance, December 31 $669 
Plan Assets Balance, January 1 Actual return on plan assets Contributions 2021 Benefits paid 
($ 
in millions) $ 270 29 64 (47) 
Balance, December 31 $316 
The expected long-term rate of return on plan assets was 10%. There were no AOCI balances related to pensions on January 1, 2021. At the end of 2021, Lacy amended the pension formula creating a prior service cost of $16 million. 
Required: 1. Determine Lacy's pension expense for 2021. 2. Prepare the journal entry(s) to record Lacy's (a) pension expense, (b) gains or losses, (c) prior service cost, (d) funding, and (e) payment of retiree benefits for 2021.