Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net income	$ 2,968	$ 2,591	$ 2,910
Net income (loss) attributable to parent	2,950	2,568	2,870
Other comprehensive income (loss), net of tax:
Unrecognized amounts on retirement benefits, net of tax	(59)	25	64
Foreign currency translation adjustment	327	(494)	546
Unrealized gains (losses) on available-for-sale securities, net of tax	0	0	500
Unrealized (losses) gains on cash flow hedges, net of tax	(29)	7	3
Total other comprehensive income (loss), net of tax	239	(462)	1,113
Comprehensive income	3,207	2,129	4,023
Comprehensive income attributable to noncontrolling interests	18	23	40
Comprehensive income attributable to shareholders	3,189	2,106	3,983
Parent Company [Member]
Net income	2,954	2,571	2,873
Net income (loss) attributable to parent	2,951	2,568	2,870
Other comprehensive income (loss), net of tax:
Total other comprehensive income (loss), net of tax	239	(462)	1,113
Comprehensive income	3,193	2,109	3,986
Comprehensive income attributable to noncontrolling interests	3	3	3
Comprehensive income attributable to shareholders	3,190	2,106	3,983
Nevada Power Company [Member]
Net income (loss) attributable to parent	264	226	255
PacifiCorp [Member]
Net income (loss) attributable to parent	771	738	768
Other comprehensive income (loss), net of tax:
Unrecognized amounts on retirement benefits, net of tax	(3)	2	(3)
Total other comprehensive income (loss), net of tax	(4)	2	(3)
Comprehensive income attributable to shareholders	768	740	765
MidAmerican Energy Company [Member]
Net income (loss) attributable to parent	793	682	605
Other comprehensive income (loss), net of tax:
Unrealized gains (losses) on available-for-sale securities, net of tax	0	0	0
Comprehensive income attributable to shareholders	793	682	605
MidAmerican Funding, LLC and Subsidiaries [Domain]
Net income (loss) attributable to parent	781	669	574
Other comprehensive income (loss), net of tax:
Unrealized gains (losses) on available-for-sale securities, net of tax	0	0	0
Comprehensive income attributable to shareholders	$ 781	$ 669	$ 574