CONSOLIDATED STATEMENT OF CASH FLOWS (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash Generated From Operations
Net income	$ 29	$ 39
Depreciation	3	3
Increase in long-term liabilities	1
Decrease in operating working capital (Note 8)	3	7
Total cash generated from operations	36	49
Investing Activities
Proceeds from settlement recoveries	2
Total investing activities	9	4
Financing Activities
Distributions paid (Note 7)	(43)	(42)
Long-term debt issued (Note 5)	2
Long-term debt repaid (Note 5)	(5)	(35)
Total financing activities	(46)	(77)
Decrease in cash and cash equivalents	(1)	(24)
Cash and cash equivalents, beginning of period	3	29
Cash and cash equivalents, end of period	2	5
Great Lakes
Investing Activities
Cumulative distributions in excess of equity earnings:	4	2
Investment in Great Lakes (Note 4)	(4)	(4)
Northern Border
Investing Activities
Cumulative distributions in excess of equity earnings:	5	5
GTN
Investing Activities
Cumulative distributions in excess of equity earnings:	1
Bison
Investing Activities
Cumulative distributions in excess of equity earnings:	$ 1	$ 1