Supplemental Cash Flow Disclosures (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Capital Expenditures Incurred but Not yet Paid	$ 661		$ 606		$ 406
Capital Expenditures Incurred Deferred Payments	0	[1]	406	[1]	647	[1]
Supplemental Cash Flow Information [Abstract]
Interest paid, net of amounts capitalized	1,073		1,046		1,136
Income taxes received, net	1,105	[2]	1,341	[2]	575	[2]
Related party transaction, cash received for income taxes, net	$ 1,200		$ 1,500		$ 734

[1] In conjunction with the construction of wind-powered generating facilities, MidAmerican Energy accrued as property, plant and equipment, net certain amounts for which it was not contractually obligated to pay until a stated future date. Refer to Note 10 for additional information.

[2] Includes $1.2 billion, $1.5 billion and $734 million of income taxes received from Berkshire Hathaway in 2013, 2012 and 2011, respectively.