Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Millions	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Cash flows from operating activities
Net income	$ 105	$ 98
Adjustments to reconcile net income to net cash from operating activities
Depreciation and amortization	34	31
Non-cash asset write down	0	21
Other non-cash income items	16	3
Asset and liability changes	(12)	(23)
Net cash provided by operating activities	143	130
Cash flows from investing activities
Capital expenditures	(47)	(34)
Net change in notes receivable from affiliates	9	40
Other	(2)	4
Net cash provided by (used in) investing activities	(40)	10
Cash flows from financing activities
Payments to retire other financing obligations	(3)	(4)
Distributions to partners	(126)	(137)
Contributions from partners	32	0
Net cash used in financing activities	(97)	(141)
Net change in cash and cash equivalents	6	(1)
Cash and cash equivalents
Beginning of period	1	2
End of period	$ 7	$ 1