Organization and Basis of Presentation Organization and Basis of Presentation (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
Operating Revenues	$ 2,249	$ 2,310	$ 5,472	$ 5,096
Net Income	212	333	598	653
Solar Source and Kalaeloa [Member]
Operating Revenues		3		7
Net Income		6		10
Power [Member]
Operating Revenues	986	1,193	2,686	2,644
Net Income	$ 54	$ 210	$ 218	$ 351