Financial Information by Business Segment (Tables)

12 Months Ended

Dec. 31, 2015

Segment Reporting [Abstract]

Financial Data for Business Segments

The financial data for the business segments are as follows:

As of and for the Year Ended December 31, 2015 (Millions of Dollars)	Operating revenues	Inter- segment revenues		Depreciation and amortization	Operating income	Interest charges	Income taxes on operating income (a)	Total assets (b)	Construction expenditures
CECONY
Electric	$8,172	$18		$820	$1,798	$447	$447	$30,603	$1,658
Gas	1,527	6		142	356	96	100	6,974	671
Steam	629	86		78	93	41	41	2,653	106
Consolidation adjustments	—	(110)		—	—	—	—	—	—
Total CECONY	$10,328		$—	$1,040	$2,247	$584	$588	$40,230	$2,435
O&R
Electric	$663		$—	$50	$103	$23	$31	$2,140	$114
Gas	182	—		18	18	12	2	579	46
Other (b)	—	—		—	—	—	—	—	—
Total O&R	$845		$—	$68	$121	$35	$33	$2,719	$160
Competitive energy businesses	$1,383	$(2)		$22	$58	$11	$22	$1,680	$823
Other (c)	(2)	2		—	1	23	1	1,013	—
Total Con Edison	$12,554		$—	$1,130	$2,427	$653	$644	$45,642	$3,418

As of and for the Year Ended December 31, 2014 (Millions of Dollars)	Operating revenues	Inter- segment revenues		Depreciation and amortization	Operating income	Interest charges	Income taxes on operating income (a)	Total assets (b)(d)	Construction expenditures
CECONY
Electric	$8,437	$16		$781	$1,712	$412	$425	$30,295	$1,500
Gas	1,721	6		132	314	89	88	6,478	549
Steam	628	84		78	113	36	49	2,670	83
Consolidation adjustments	—	(106)		—	—	—	—	—	—
Total CECONY	$10,786		$—	$991	$2,139	$537	$562	$39,443	$2,132
O&R
Electric	$680		$—	$46	$103	$24	$29	$2,023	$105
Gas	212	—		15	25	10	6	786	37
Other (b)	—	—		—	—	1	—	1	—
Total O&R	$892		$—	$61	$128	$35	$35	$2,810	$142
Competitive energy businesses	$1,244	$(10)		$19	$(60)	$(8)	$(8)	$1,013	$447
Other (c)	(3)	10		—	2	27	—	805	—
Total Con Edison	$12,919		$—	$1,071	$2,209	$591	$589	$44,071	$2,721

As of and for the Year Ended December 31, 2013 (Millions of Dollars)	Operating revenues	Inter- segment revenues		Depreciation and amortization	Operating income	Interest charges	Income taxes on operating income (a)	Total assets (b)(d)	Construction expenditures
CECONY
Electric	$8,131	$16		$749	$1,595	$402	$380	$27,547	$1,471
Gas	1,616	5		130	362	83	112	5,977	536
Steam	683	82		67	103	36	39	2,571	128
Consolidation adjustments	—	(103)		—	—	—	—	—	—
Total CECONY	$10,430		$—	$946	$2,060	$521	$531	$36,095	$2,135
O&R
Electric	$628		$—	$41	$87	$25	$13	$1,882	$98
Gas	205	—		15	33	11	7	640	37
Other (b)	—	—		—	—	1	—	2	—
Total O&R	$833		$—	$56	$120	$37	$20	$2,524	$135
Competitive energy businesses	$1,096	$5		$23	$63	$135	$(41)	$1,305	$378
Other (c)	(5)	(5)		(1)	1	26	(6)	527	—
Total Con Edison	$12,354		$—	$1,024	$2,244	$719	$504	$40,451	$2,648

(a) For Con Edison, the income tax expense on non-operating income was $40 million, $21 million and $28 million in 2015, 2014 and 2013, respectively. For CECONY, the income tax expense on non-operating income was $14 million, $7 million and $11 million in 2015, 2014 and 2013, respectively.

(b) Includes amounts related to the RECO securitization.

(c) Parent company, consolidation adjustments and Con Edison Transmission. Other does not represent a business segment.

(d) Reflects $237 million and $196 million in 2014 and 2013, respectively, related to the adoption of ASU No. 2015-03, “Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs” and ASU No. 2015-17, “Income Taxes (Topic 740): Balance Sheet Classification of Deferred Taxes.” See Notes C and L.