Amendment No. 3 to Form S-1 Table of Contents AB ACQUISITION LLC AND SUBSIDIARIES Notes to Consolidated Financial Statements Information for the Company's pension plans, all of which have an accumulated benefit obligation in excess of plan assets as of fiscal year-end 2014 and 2013, is shown below (in millions): February 28, 2015 February 20, 2014 Projected benefit obligation $ 2,724.8 $ 357.4 Accumulated benefit obligation 2,659.5 357.4 Fair value of plan assets 2,144.1 298.1 The following tables provide the components of net expense for the retirement plans and other changes in plan assets and benefit obligations recognized in other comprehensive income (in millions): Components of net expense: Pension Other Post- Retirement Benefits Fiscal 2014 Fiscal 2013 Fiscal 2014 Estimated return on plan assets $ (29.9) $ (14.5) $ — Service cost 13.5 9.4 — Interest cost 24.5 13.1 0.1 Settlement loss 0.5 — — Net expense $ 8.6 $ 8.0 $ 0.1 Changes in plan assets and benefit obligations recognized in Other comprehensive income (loss): Net actuarial gain $ (120.7) $ (29.5) $ (0.3) Total net expense and changes in plan assets and benefit obligations recognized in Other comprehensive income (loss) $ (112.1) $ (21.5) $ (0.2) Prior service costs are amortized on a straight-line basis over the average remaining service period of active participants. When the accumulation of actuarial gains and losses exceeds 10% of the greater of the projected benefit obligation and the fair value of plan assets, the excess is amortized over the average remaining service period of active participants. No prior service costs or estimated net actuarial gain or loss is expected to be amortized from other comprehensive income into periodic benefit cost during fiscal 2015. Assumptions The actuarial assumptions used to determine year-end projected benefit obligations for pension plans were as follows: February 28, 2015 February 20, 20