Investments and Restricted Cash and Investments (Tables)

12 Months Ended

Dec. 31, 2015

Investments, Including Equity Method And Restricted Cash And Investments [Line Items]

Investments and Restricted Cash and Investments [Table Text Block]

Investments and restricted cash and investments consists of the following as of December 31 (in millions):

	2015		2014
Investments:
BYD Company Limited common stock	$	1,238	$	881
Rabbi trusts	380		386
Other	130		126
Total investments	1,748		1,393
Equity method investments:
Electric Transmission Texas, LLC	585		515
Bridger Coal Company	190		192
BHE Renewables tax equity investments	168		—
Other	160		161
Total equity method investments	1,103		868
Restricted cash and investments:
Quad Cities Station nuclear decommissioning trust funds	429		424
Solar Star and Topaz Projects	95		66
Other	129		167
Total restricted cash and investments	653		657
Total investments and restricted cash and investments	$	3,504	$	2,918
Reflected as:
Current assets	$	137	$	115
Noncurrent assets	3,367		2,803
Total investments and restricted cash and investments	$	3,504	$	2,918

MidAmerican Energy Company [Member]

Investments, Including Equity Method And Restricted Cash And Investments [Line Items]

Investments and Restricted Cash and Investments [Table Text Block]

Investments and restricted cash and investments consists of the following amounts as of December 31 (in millions):

	2015		2014
Nuclear decommissioning trust	$	429	$	424
Rabbi trusts	175		175
Auction rate securities	26		26
Other	4		—
Total	$	634	$	625