Financial Information by Business Segment (Tables)

3 Months Ended

Mar. 31, 2018

Segment Reporting [Abstract]

Financial Data for Business Segments

The financial data for the business segments for the three months ended March 31, 2018 and 2017 were as follows:

	For the Three Months Ended March 31,
	Operating revenues		Inter-segment revenues				Depreciation and amortization		Operating income/(loss)
(Millions of Dollars)	2018	2017	2018		2017		2018	2017	2018	2017
CECONY
Electric	$1,729	$1,793	$4		$5		$240	$229	$254	$320
Gas	841	765	1		1		49	44	321	298
Steam	314	298	19		18		21	21	130	123
Consolidation adjustments	—	—	(24)		(24)		—	—	—	—
Total CECONY	$2,884	$2,856		$—		$—	$310	$294	$705	$741
O&R
Electric	$149	$141		$—		$—	$14	$12	$8	$18
Gas	97	97	—		—		5	5	36	40
Total O&R	$246	$238		$—		$—	$19	$17	$44	$58
Clean Energy Businesses	$233	$136		$—		$—	$19	$17	$9	$15
Con Edison Transmission	1	—	—		—		—	—	(1)	(3)
Other (a)	—	(2)	—		—		—	1	(2)	1
Total Con Edison	$3,364	$3,228		$—		$—	$348	$329	$755	$812

(a) Parent company and consolidation adjustments. Other does not represent a business segment.