Amount of megawatts

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- Definition

Energy efficiency investments in MEEIA 2019 programs

+ References

No definition available.

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- Definition

MEEIA performance incentive awards if energy efficiency goals are achieved.

+ References

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- Definition

MEEIA performance incentive awards earned if energy efficiency goals are exceeded.

+ References

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- Definition

MoPSC Staff Recommended Costs to be Securitized

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- Definition

Percentage of MEEIA Energy Efficiency Goals Achieved

+ References

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Rate And Regulatory Matters [Line Items]

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- Definition

Requested Costs to be securitized

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- Definition

The expense charged against earnings during the period to allocate the capitalized costs of regulatory assets over the periods expected to benefit from such costs.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-28

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.3)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 13
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-13

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Rate And Regulatory Matters (Narrative-Missouri) (Details)	1 Months Ended		3 Months Ended						12 Months Ended
	Mar. 31, 2024 USD ($)	Nov. 30, 2023 USD ($)	Mar. 31, 2024 USD ($)	Jun. 30, 2023 MWh	Mar. 31, 2023 USD ($)	Sep. 30, 2022 MWh	Jun. 30, 2022 MWh	Mar. 31, 2022 MWh	Dec. 31, 2025 USD ($)
Rate And Regulatory Matters [Line Items]
Capital expenditures			$ 890,000,000		$ 931,000,000
Union Electric Company
Rate And Regulatory Matters [Line Items]
Capital expenditures			466,000,000		$ 481,000,000
Union Electric Company \| Rush Island Energy Center
Rate And Regulatory Matters [Line Items]
Costs to be Securitized		$ 519,000,000
Amortization of Regulatory Asset		$ 15
MoPSC Staff Recommended Costs to be Securitized	$ 497,000,000
Union Electric Company \| Solar generation facility
Rate And Regulatory Matters [Line Items]
Capital expenditures			$ 850,000,000
Union Electric Company \| Build-transfer \| Solar generation facility
Rate And Regulatory Matters [Line Items]
Amount of Megawatts \| MWh				300			200	150
Union Electric Company \| Development-transfer \| Solar generation facility
Rate And Regulatory Matters [Line Items]
Amount of Megawatts \| MWh				150
Union Electric Company \| Self-build \| Solar generation facility
Rate And Regulatory Matters [Line Items]
Amount of Megawatts \| MWh				50		50
Union Electric Company \| Electric \| MEEIA 2024 \| Forecast
Rate And Regulatory Matters [Line Items]
Energy efficiency investments in MEEIA 2019 programs									$ 123,000,000
Percentage of MEEIA Energy Efficiency Goals Achieved									100.00%
Incentive award if energy efficiency goals are achieved									$ 56,000,000
Incentive award if energy efficiency goals are exceeded									$ 14,000,000