Company: AILIM
Filing Date: 2025-02-18
Form Type: 10-K
Source: 0001002910-25-000055
Chunk: 95

Company: Ameren Illinois Co
Filing Date: 2025-02-18
Form: 10-K
Item: Item 8
Chunk 95
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2024 and 2023, that have not been recognized in net periodic benefit costs.20242023PensionBenefitsPostretirementBenefitsPensionBenefitsPostretirementBenefitsAccumulated benefit obligation at end of year$3,962 $(a)$4,102 $(a)Change in benefit obligation:Net benefit obligation at beginning of year$4,258 $856 $4,061 $838 Service cost88 12 79 12 Interest cost222 44 221 45 Participant contributions— 7 — 7 Actuarial (gain) loss(143)(51)170 17 Benefits paid(291)(61)(273)(63)Net benefit obligation at end of year4,134 807 4,258 856 Change in plan assets:Fair value of plan assets at beginning of year4,272 1,393 4,027 1,249 Actual return on plan assets193 150 514 197 Employer contributions8 4 4 3 Participant contributions— 7 — 7 Benefits paid(291)(61)(273)(63)Fair value of plan assets at end of year4,182 1,493 4,272 1,393 Funded status – surplus(48)(686)(14)(537)Accrued benefit asset at December 31$(48)$(686)$(14)$(537)Amounts recognized in the balance sheet consist of:Noncurrent asset$(71)$(686)$(44)$(537)Current liability(b)2 — 2 — Noncurrent liability(c)21 — 28 — Net asset recognized$(48)$(686)$(14)$(537)Amounts recognized in regulatory assets or liabilities consist of:Net actuarial (gain) loss$42 $(379)$(10)$(311)Prior service credit— (21)— (25)Amounts recognized in accumulated OCI (pretax) consist of:Net actuarial (gain) loss26 (7)22 (4)Total$68 $(407)$12 $(340)(a)Not applicable.(b)Included in “Other current liabilities” on Ameren’s consolidated balance sheet.(c)Included in “Other deferred credits and liabilities” on Ameren’s consolidated balance sheet.

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The following table presents the assumptions used to determine our benefit obligations at December 31