A partially completed pension spreadsheet showing the relationships among the elements that constitute Carney, Inc.'s defined benefit pension plan follows. At the end of 2017, Carney revised its pension formula and recalculated benefits earned by employees in prior years using the more generous formula, creating a prior service cost of $80 million. At the end of 2018, the pension formula was amended again, creating an additional prior service cost of $100 million. At the beginning of 2019, the pension formula was amended again, creating an additional prior service cost of $110 million. In 2017 - 2020, both the expected rate of return on assets and the actuary's discount rate remained 10%, and the average remaining service life of the active employee group was 10 years.

Fill in blanks in the 2018 pension spreadsheet.

($ in millions)

(PBO)

Plan Assets

Prior Service Cost-AOCI

Net Loss (Gain) -AOCI

Pension Expense

Cash

Net Pension (Liability) / Asset

Balance, Jan. 1, 2018

(800)

700

80

500

Service cost

(70)

Interest cost

Prior Service Cost

Expected return on assets

Adjust for: Gain (loss) on assets

14

Amortization of: "Prior service cost-AOCI"

Amortization of: "Net Loss (Gain)-AOCI"

Gain (Loss) on PBO

94

Cash funding

76

Retiree benefits

60

Bal., Dec. 31, 2018

(96)