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Environmental Matters - Additional Information (Details) - Superfund Sites - Manufactured Gas Plant Sites - Maximum $ in Thousands	Mar. 31, 2026 USD ($)
Site Contingency [Line Items]
Estimated aggregate undiscounted potential liability related environmental contaminants	$ 3,380,000
CECONY
Site Contingency [Line Items]
Estimated aggregate undiscounted potential liability related environmental contaminants	$ 3,540,000

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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