Note 8 - Non-Wholly Owned Entities (Tables)

9 Months Ended

Sep. 30, 2012

Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Table Text Block]

	September 30, 2012							December 31, 2011							September 30, 2011
In millions	Consolidated		SouthStar (1)		% (2)			Consolidated		SouthStar (1)		% (2)			Consolidated		SouthStar (1)		% (2)
Current assets	$	2,135	$	152		7	%	$	2,746	$	210		8	%	$	1,801	$	164		9	%
Long-term assets and other deferred debits		11,460		10		0			11,167		9		0			5,658		9		0
Total assets	$	13,595	$	162		1	%	$	13,913	$	219		2	%	$	7,459	$	173		2	%
Current liabilities	$	2,764	$	42		2	%	$	3,084	$	77		2	%	$	1,140	$	57		5	%
Long-term liabilities and other deferred credits		7,433		0		0			7,490		0		0			4,438		0		0
Total Liabilities		10,197		42		0			10,574		77		1			5,578		57		1
Equity		3,398		120		4			3,339		142		4			1,881		116		6
Total liabilities and equity	$	13,595	$	162		1	%	$	13,913	$	219		2	%	$	7,459	$	173		2	%

Schedule of Variable Interest Entities [Table Text Block]

	Three months ended					Nine months ended
	September 30,					September 30,
In millions	2012		2011			2012		2011
Operating revenues	$	87	$	99		$	401	$	505
Operating expenses
Cost of goods sold		73		88			286		388
Operation and maintenance		13		15			44		49
Depreciation and amortization		1		0			2		1
Taxes other than income taxes		0		0			2		1
Total operating expenses		87		103			334		439
Operating income	$	0	$	(4	)	$	67	$	66