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v3.23.3

Derivative Instruments and Hedging Activities - Offsetting Derivative Instruments and Credit Risk-Related Features (Details) - USD ($) $ in Millions | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Assets [Abstract] |  |
Cash collateral received - eligible for offset | $ 0 | $ 0
Liabilities [Abstract] |  |
Cash collateral pledged - eligible for offset | 0 | 0
Credit Risk-Related Contingent Features [Abstract] |  |
Aggregate fair value of additional collateral requirements in the event of a credit downgrade below investment grade | 22 |
Derivative, Net Liability Position, Aggregate Fair Value | 21 |
Treasury Derivatives [Member] |  |
Assets [Abstract] |  |
Gross | 0 | 25
Derivative instruments - eligible for offset | 0 | 20
Cash collateral received - eligible for offset | 0 | 0
Net | 0 | 5
Liabilities [Abstract] |  |
Gross | 37 | 73
Derivative instruments - eligible for offset | 0 | 62
Cash collateral pledged - eligible for offset | 0 | 0
Net | 37 | 11
Louisville Gas And Electric Co [Member] |  |
Assets [Abstract] |  |
Cash collateral received - eligible for offset | 0 | 0
Liabilities [Abstract] |  |
Cash collateral pledged - eligible for offset | 0 | 0
Louisville Gas And Electric Co [Member] | Treasury Derivatives [Member] |  |
Assets [Abstract] |  |
Gross | 0 | 0
Derivative instruments - eligible for offset | 0 | 0
Cash collateral received - eligible for offset | 0 | 0
Net | 0 | 0
Liabilities [Abstract] |  |
Gross | 3 | 7
Derivative instruments - eligible for offset | 0 | 0
Cash collateral pledged - eligible for offset | 0 | 0
Net | $ 3 | $ 7

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- Definition The aggregate fair value of additional assets that would be required to be posted as collateral for derivative instruments with credit-risk-related contingent features if the credit-risk-related contingent features were triggered at the end of the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4H + Details
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