Condensed Statements of Consolidated Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Operating revenues:
Nonaffiliates	$ 714	$ 687	$ 1,424	$ 1,364
Affiliates	224	225	460	465
Total operating revenues	938	912	1,884	1,829
Operating expenses:
Wholesale transmission service	199	185	393	364
Operation and maintenance	168	168	353	334
Depreciation and amortization	220	210	437	420
Provision in lieu of income taxes (Note 10)	57	60	115	123
Taxes other than amounts related to income taxes	108	106	220	215
Total operating expenses	752	729	1,518	1,456
Operating income	186	183	366	373
Other income and deductions:
Other income (Note 11)	1	3	4	7
Other deductions (Note 11)	7	4	12	7
Nonoperating provision in lieu of income taxes	(2)		(2)	1
Interest income		1	1	2
Interest expense and related charges (Note 11)	84	89	165	177
Net income	$ 98	$ 94	$ 196	$ 197