CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
OPERATING REVENUES
Operating revenues	$ 1,573	$ 1,618	$ 3,172	$ 3,254
Operating revenues - affiliates	650	604	1,304	1,185
Total operating revenues	2,223	2,222	4,476	4,439
OPERATING EXPENSES
Cost of services and products (exclusive of depreciation and amortization)	731	743	1,439	1,435
Selling, general and administrative	235	256	485	526
Operating expenses - affiliates	231	238	482	486
Depreciation and amortization	424	464	843	926
Total operating expenses	1,621	1,701	3,249	3,373
OPERATING INCOME	602	521	1,227	1,066
OTHER (EXPENSE) INCOME
Interest expense	(120)	(119)	(241)	(237)
Interest expense - affiliates, net	(15)	(13)	(29)	(26)
Other income, net	0	1	2	1
Total other expense, net	(135)	(131)	(268)	(262)
Income before income tax expense	467	390	959	804
Income tax expense	179	152	367	319
NET INCOME	$ 288	$ 238	$ 592	$ 485