CONSOLIDATED STATEMENT OF CASH FLOWS (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013		Sep. 30, 2013 Public offering		Sep. 30, 2013 GTN and Bison		Sep. 30, 2013 Bison		Sep. 30, 2014 Northern Border	Sep. 30, 2013 Northern Border		Sep. 30, 2014 Great Lakes	Sep. 30, 2013 Great Lakes
Cash Generated From Operations
Net income	$ 151	$ 141	[1]
Depreciation	64	64	[1]
Amortization of debt issue costs	1	1	[1]
Accruals for costs related to the 2014 Acquisition (Note 13)	2
Change in other assets		(4)	[1]
Change in other liabilities	1	2	[1]
Change in operating working capital (Note 9)	36	11	[1]
Total cash generated from operations	255	215	[1]
Investing Activities
Cumulative distributions in excess of equity earnings										15	18	[1]	10	15	[1]
Investment in Great Lakes													(4)	(4)	[1]
Acquisition of 45 percent interest in each of GTN and Bison, net of cash acquired (Note 2)						(921)	[1]
Adjustment to May 2011 acquisition								1	[1]
Capital expenditures	(8)	(9)	[1]
Change in affiliate demand loan receivable		(24)	[1]
Other	1
Total investing activities	(11)	(924)	[1]
Financing Activities
Distributions paid (Note 8)	(157)	(137)	[1]
Distributions paid to non-controlling interests	(42)	(38)	[1]
Change in affiliate demand loan payable		(15)	[1]
Equity issuance, net				381	[1]
Long-term debt issued	15	872	[1]
Long-term debt repaid	(60)	(334)	[1]
Equity contribution from Bison's former parent		18	[1]
Distributions paid to former parent of GTN and Bison		(37)	[1]
Total financing activities	(171)	710	[1]
Increase/(decrease) in cash and cash equivalents	73	1	[1]
Cash and cash equivalents, beginning of period	25	3	[1]
Cash and cash equivalents, end of period	$ 98	$ 4	[1]

[1] Recast as discussed in Note 2.