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Other Income, Net | 6 Months Ended
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Jun. 30, 2022
Other Nonoperating Income (Expense) [Abstract] |
OTHER INCOME, NET | OTHER INCOME, NET The following table presents the components of “Other Income, Net” in the Ameren Companies’ statements of income for the three and six months ended June 30, 2022 and 2021:
| Three Months |  | Six Months |
| 2022 |  | 2021 |  | 2022 |  | 2021 |
Ameren: |  |  |  |  |  |  |  |
Allowance for equity funds used during construction | $ | 11 |  |  | $ | 9 |  |  | $ | 19 |  |  | $ | 16 |  |
Interest income on industrial development revenue bonds | 6 |  |  | 6 |  |  | 12 |  |  | 12 |  |
Non-service cost components of net periodic benefit income(a) | 47 |  |  | 34 |  |  | 93 |  |  | 68 |  |
Miscellaneous income | 6 |  |  | 7 |  |  | 13 |  |  | 12 |  |
Donations | (2) |  |  | (1) |  |  | (4) |  |  | (4) |  |
Miscellaneous expense | (6) |  |  | (6) |  |  | (11) |  |  | (9) |  |
Total Other Income, Net | $ | 62 |  |  | $ | 49 |  |  | $ | 122 |  |  | $ | 95 |  |
Ameren Missouri: |  |  |  |  |  |  |  |
Allowance for equity funds used during construction | $ | 6 |  |  | $ | 6 |  |  | $ | 10 |  |  | $ | 10 |  |
Interest income on industrial development revenue bonds | 6 |  |  | 6 |  |  | 12 |  |  | 12 |  |
Non-service cost components of net periodic benefit income(a) | 14 |  |  | 14 |  |  | 28 |  |  | 28 |  |
Miscellaneous income | 1 |  |  | — |  |  | 3 |  |  | 1 |  |
Donations | (1) |  |  | (1) |  |  | (2) |  |  | (1) |  |
Miscellaneous expense | (2) |  |  | (1) |  |  | (4) |  |  | (3) |  |
Total Other Income, Net | $ | 24 |  |  | $ | 24 |  |  | $ | 47 |  |  | $ | 47 |  |
Ameren Illinois: |  |  |  |  |  |  |  |
Allowance for equity funds used during construction | $ | 5 |  |  | $ | 3 |  |  | $ | 9 |  |  | $ | 6 |  |
Non-service cost components of net periodic benefit income | 21 |  |  | 14 |  |  | 42 |  |  | 28 |  |
Miscellaneous income | 3 |  |  | 3 |  |  | 5 |  |  | 4 |  |
Donations | (1) |  |  | — |  |  | (2) |  |  | (3) |  |
Miscellaneous expense | (3) |  |  | (4) |  |  | (5) |  |  | (5) |  |
Total Other Income, Net | $ | 25 |  |  | $ | 16 |  |  | $ | 49 |  |  | $ | 30 |  |
(a)For the three and six months ended June 30, 2022, the non-service cost components of net periodic benefit income were adjusted by amounts deferred of $5 million and $11 million, respectively, due to a regulatory tracking mechanism for the difference between the level of such costs incurred by Ameren Missouri under GAAP and the level of such costs included in rates. The deferral was $(3) million for both the three and six months ended June 30, 2021. See Note 11– Retirement Benefits for additional information.

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- Definition The entire disclosure for other income or other expense items (both operating and nonoperating). Sources of nonoperating income or nonoperating expense that may be disclosed, include amounts earned from dividends, interest on securities, profits (losses) on securities, net and miscellaneous other income or income deductions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -URI http://asc.fasb.org/topic&trid=2122503 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 610 -URI http://asc.fasb.org/topic&trid=49130413 + Details
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