Leases - Future Minimum Lease Commitments (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013
Capital Leased Assets [Line Items]
2014	$ 1
2015	1
2016
2017
2018	1
All years thereafter
Total	3
Less: amount representing interest	(1)
Present value of net minimum lease payment	2
CECONY [Member]
Capital Leased Assets [Line Items]
2014	1
2015	1
2016
2017
2018	1
All years thereafter
Total	3
Less: amount representing interest	(1)
Present value of net minimum lease payment	$ 2

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Amount of minimum lease payments for capital leases.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737

+ Details

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Amount of minimum lease payments maturing in the next fiscal year following the latest fiscal year for capital leases.

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Amount of minimum lease payments maturing in the fifth fiscal year following the latest fiscal year for capital leases.

+ References

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Amount of minimum lease payments maturing in the forth fiscal year following the latest fiscal year for capital leases.

+ References

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Amount of minimum lease payments maturing in the third fiscal year following the latest fiscal year for capital leases.

+ References

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Amount of minimum lease payments maturing in the second fiscal year following the latest fiscal year for capital leases.

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Amount of minimum lease payments maturing after the fifth fiscal year following the latest fiscal year for capital leases.

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Amount necessary to reduce net minimum lease payments to present value for capital leases.

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- Definition

Present value of minimum lease payments for capital leases net of executory costs, including amounts paid by the lessee to the lessor for insurance, maintenance and taxes.

+ References

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