Organization and Basis of Presentation Organization and Basis of Presentation (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Operating Revenues	$ 2,641	$ 2,554	$ 8,113	$ 7,650
Net Income	444	390	1,042	1,043
Solar Source and Kalaeloa [Member]
Operating Revenues		5		12
Net Income		5		15
Power [Member]
Operating Revenues	1,138	1,174	3,824	3,818
Net Income	$ 222	$ 226	$ 440	$ 577