Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Including the current and noncurrent portions, aggregate carrying value as of the balance sheet date of loans payable (with maturities initially due after one year or beyond the operating cycle if longer).

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Short-Term Borrowing (Details) - USD ($)	Jun. 30, 2019	Apr. 30, 2019	Dec. 31, 2018
Short-term Debt [Line Items]
Commercial paper, outstanding	$ 1,161,000,000		$ 1,741,000,000
Loans outstanding under the credit agreement	$ 0		$ 0
Revolving Credit
Short-term Debt [Line Items]
Aggregate commitment		$ 2,200,000,000
Commercial Paper
Short-term Debt [Line Items]
Weighted average interest rate	2.60%		3.00%
CECONY
Short-term Debt [Line Items]
Commercial paper, outstanding	$ 849,000,000		$ 1,192,000,000
CECONY \| Commercial Paper
Short-term Debt [Line Items]
Weighted average interest rate	0.00%		3.00%