Number of people died in explosion and fire incident.

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Number of people injured in explosion and fire incident.

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- Definition

Number Of Persons Died In Steam Ruptured

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- Definition

Number of Buildings Destroyed by Fire

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- Definition

Percentage of estimated costs on projects.

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- 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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Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
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Amount due in settlement of a claim for reimbursement from an insurance company when the Company has suffered a loss covered under an insurance policy.

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- Definition

Amount of loss contingency liability.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
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Number of pending claims pertaining to a loss contingency.

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-Topic 450
-SubTopic 20
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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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Other Material Contingencies - Additional Information (Details) $ in Millions		1 Months Ended	12 Months Ended
	Mar. 12, 2014 building people	Jul. 31, 2007 lawsuit person	Dec. 31, 2016 USD ($) lawsuit	Dec. 31, 2015 USD ($)	Dec. 31, 2014
Guarantor Obligations [Line Items]
Guarantee obligations maximum exposure			$ 2,370	$ 2,856
Payment Guarantee by CET Electric of Contributions to New York Transco LLC
Guarantor Obligations [Line Items]
Ownership interest, percentage					45.70%
Estimated project cost percentage			175.00%
Financial Guarantee in Behalf of CET Gas for Proposed Gas Transmission Project
Guarantor Obligations [Line Items]
Guarantee obligations maximum exposure			$ 25
Financial and Performance Guarantee for Commodity Transactions During Period in which Con Edison Solutions Provides Transition Services
Guarantor Obligations [Line Items]
Guarantee obligations maximum exposure			42
Financial Guarantee for Indemnity Agreements for Surety Bonds in Connection with Operation of Solar Energy Facilities and Energy Service Projects
Guarantor Obligations [Line Items]
Guarantee obligations maximum exposure			70
Certain Obligations Under Agreement to Sell the Retail Electric Supply Business
Guarantor Obligations [Line Items]
Guarantee obligations maximum exposure			53
Financial Guarantee to Public Utility Commission of Texas
Guarantor Obligations [Line Items]
Guarantee obligations maximum exposure			5
Manhattan Steam Main Rupture \| CECONY
Guarantor Obligations [Line Items]
Number of person who died in stream rupture incident \| person		1
Number of pending lawsuits \| lawsuit		60
Estimated accrued liability for suits			25
Insurance receivable for suits			$ 25
Manhattan Explosion and Fire
Guarantor Obligations [Line Items]
Number of pending lawsuits \| lawsuit			70
Number of buildings destroyed by fire \| building	2
Number of people died in explosion and fire incident \| people	8
Number of people injured in explosion and fire incident (more than) \| people	50