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Related Party Transactions (Tables) | 12 Months Ended
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Dec. 31, 2019
Related Party Transactions [Abstract] |
Summary of Costs of Administrative and Other Services Provided and Received | The costs of administrative and other services provided by CECONY to, and received by it from, Con Edison and its other subsidiaries for the years ended December 31, 2019, 2018 and 2017 were as follows:
| CECONY
(Millions of Dollars) | 2019 | 2018 | 2017
Cost of services provided | $121 | $115 | $111
Cost of services received | 64 | 73 | 64

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- Definition Tabular disclosure of related party transactions. Examples of related party transactions include, but are not limited to, transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners and (d) affiliates. + References No definition available. + Details
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