Note 13 - Revision to Prior Period Financial Statements (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013		Dec. 31, 2013		Jan. 01, 2013
Note 13 - Revision to Prior Period Financial Statements (Details) [Line Items]
Impact of Restatement on Opening Retained Earnings, Net of Tax											$ 45
Regulatory Assets, Noncurrent	726	[1]	880	[1]	726	[1]	880	[1]	705	[1]
Property, Plant and Equipment, Net	8,788		8,359		8,788		8,359		8,643
Net Income (Loss) Attributable to Parent	58		43		342		193
Depreciation, Depletion and Amortization, Nonproduction	95	[1]	103	[1]	188	[1]	205	[1]
Intangible Assets, Net (Excluding Goodwill)	135		158		135		158		145
Scenario, Adjustment [Member]
Note 13 - Revision to Prior Period Financial Statements (Details) [Line Items]
Regulatory Assets, Noncurrent	(95)				(95)
Property, Plant and Equipment, Net	(14)				(14)
Net Income (Loss) Attributable to Parent	(4)		(5)		(9)		(9)
Depreciation, Depletion and Amortization, Nonproduction	1		1		3		2
Intangible Assets, Net (Excluding Goodwill)	$ (12)		$ (6)		$ (12)		$ (6)

[1] Amounts revised to include prior period adjustments. See Note 13 for additional information.