CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
OPERATING REVENUES
Operating revenues	$ 1,554	$ 1,670	$ 4,726	$ 4,924
Operating revenues - affiliates	672	617	1,976	1,802
Total operating revenues	2,226	2,287	6,702	6,726
OPERATING EXPENSES
Cost of services and products (exclusive of depreciation and amortization)	757	734	2,196	2,169
Selling, general and administrative	232	266	717	792
Operating expenses - affiliates	237	249	719	735
Depreciation and amortization	424	466	1,267	1,392
Total operating expenses	1,650	1,715	4,899	5,088
OPERATING INCOME	576	572	1,803	1,638
OTHER (EXPENSE) INCOME
Interest expense	(121)	(119)	(362)	(356)
Interest expense - affiliates, net	(15)	(13)	(44)	(39)
Other expense, net	(26)	(1)	(24)	0
Total other expense, net	(162)	(133)	(430)	(395)
INCOME BEFORE INCOME TAX EXPENSE	414	439	1,373	1,243
Income tax expense	159	171	526	490
NET INCOME	$ 255	$ 268	$ 847	$ 753