CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
OPERATING REVENUES:
Transportation and storage of natural gas	$ 136	$ 149
Other	5	6
Total operating revenues	141	155
OPERATING EXPENSES:
Cost of natural gas and other energy	1	2
Operating and maintenance	50	53
General and administrative	10	12
Depreciation and amortization	32	35
Total operating expenses	93	102
OPERATING INCOME	48	53
OTHER INCOME (EXPENSE):
Interest expense, net	(13)	(13)
Equity in earnings of unconsolidated affiliates	0	4
Interest income - affiliates	16	0
Other, net	1	(1)
Total other expenses, net	4	(10)
INCOME BEFORE INCOME TAX EXPENSE	52	43
Income tax expense	16	12
NET INCOME	36	31
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 36	$ 31