Company: AILIM
Filing Date: 2025-02-18
Form Type: 10-K
Source: 0001002910-25-000055
Chunk: 102

Company: Ameren Illinois Co
Filing Date: 2025-02-18
Form: 10-K
Item: Item 8
Chunk 102
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 of postretirement benefit plans’ assets  $1,493 $1,393 (a)Medical benefit (health and welfare) component for accounts maintained in accordance with Section 401(h) of the Internal Revenue Code to fund a portion of the postretirement obligation. These 401(h) assets are included in the pension plan assets shown above.(b)Net of receivables related to pending securities sales and payables related to pending securities purchases.Net Periodic Benefit CostThe following table presents the components of the net periodic benefit cost (income) of Ameren’s pension and postretirement benefit plans during 2024, 2023, and 2022:Pension BenefitsPostretirement Benefits202420232022202420232022Service cost(a)$88 $79 $128 $12 $12 $20 Non-service cost components: Interest cost222 221 163 44 45 34 Expected return on plan assets(b)(327)(333)(320)(93)(91)(85)Amortization of(b):Prior service cost (credit)— — — (4)(4)(4)Actuarial (gain) loss(67)(115)25 (38)(45)(19)Total non-service cost components(c)$(172)$(227)$(132)$(91)$(95)$(74)Net periodic benefit cost (income)(d)$(84)$(148)$(4)$(79)$(83)$(54)(a)Service cost, net of capitalization, is reflected in “Operating Expenses - Other operations and maintenance” on Ameren’s statement of income.(b)Prior service cost (credit) is amortized on a straight-line basis over the average future service of active participants benefiting under the plan amendment. Net actuarial gains or losses related to the net benefit obligation subject to amortization are amortized on a straight-line basis over 10 years. The difference between the actual and expected return on plan assets is amortized over 4 years.(c)Non-service cost components are reflected in “Other Income, Net” on Ameren’s consolidated statement of income. See Note 6 – Other Income, Net for additional information.(d)Does not include the impact of the tracker for the difference between the level of pension and postretirement benefit costs (income) incurred by Ameren Missouri under GAAP and the level of such costs included in rates.The Ameren Companies are responsible for their share of