Notes payable and other borrowings (Tables)

3 Months Ended

Mar. 31, 2012

Insurance and Other [Member]

Schedule of short and long term outstanding debt disclosure

Notes payable and other borrowings are summarized below (in millions). The weighted average interest rates shown in the following tables are as of March 31, 2012. Maturity date ranges are based on borrowings as of March 31, 2012.

	Weighted Average Interest Rate			March 31, 2012		December 31, 2011
Insurance and other:
Issued by Berkshire parent company due 2012-2047		2.3	%	$	8,320	$	8,287
Short-term subsidiary borrowings		0.2	%		1,404		1,490
Other subsidiary borrowings due 2012-2035		5.9	%		3,911		3,991
				$	13,635	$	13,768

Railroad, Utilities and Energy [Member]

Schedule of short and long term outstanding debt disclosure

	Weighted Average Interest  Rate			March 31, 2012		December 31, 2011
Railroad, utilities and energy:
Issued by MidAmerican Energy Holdings Company (“MidAmerican”) and its subsidiaries:
MidAmerican senior unsecured debt due 2012-2037		6.1	%	$	5,363	$	5,363
Subsidiary and other debt due 2012-2042		5.4	%		15,335		14,552
Issued by BNSF due 2012-2097		5.7	%		13,825		12,665
				$	34,523	$	32,580

Finance and Financial Products [Member]

Schedule of short and long term outstanding debt disclosure

	Weighted Average Interest Rate			March 31, 2012		December 31, 2011
Finance and financial products:
Issued by Berkshire Hathaway Finance Corporation (“BHFC”) due 2012-2040		4.5	%	$	11,281	$	11,531
Issued by other subsidiaries due 2012-2036		4.8	%		2,396		2,505
				$	13,677	$	14,036