Consolidated Balance Sheets £ in Millions, $ in Millions, € in Billions, ¥ in Billions		Dec. 31, 2021 USD ($)		Dec. 31, 2020 USD ($)
ASSETS
Investments in fixed maturity securities		$ 16,434		$ 20,410
Investments in equity securities		350,719	[1]	281,170	[2]
Loans and finance receivables		20,751		19,201
Inventories		20,954		19,208
Equipment held for lease		14,918		14,601
Goodwill	[3]	73,875		73,734
Deferred charges - retroactive reinsurance		10,639		12,441
Total assets		958,784		873,729
LIABILITIES
Unpaid losses and loss adjustment expenses		86,664		79,854
Unpaid losses and loss adjustment expenses under retroactive reinsurance contracts		38,256		40,966
Income taxes, principally deferred		90,243		74,098
Total liabilities		443,854		422,393
Shareholders’ equity:
Common stock		8		8
Capital in excess of par value		35,592		35,626
Accumulated other comprehensive income		(4,027)		(4,243)
Retained earnings		534,421		444,626
Treasury stock, at cost		(59,795)		(32,853)
Berkshire Hathaway shareholders’ equity		506,199		443,164
Noncontrolling interests		8,731		8,172
Total shareholders’ equity		514,930		451,336
Total liabilities and shareholders' equity		958,784		873,729
Insurance and Other [Member]
ASSETS
Cash and cash equivalents	[4]	85,319		44,714
Short-term investments in U.S. Treasury Bills		58,535		90,300
Investments in fixed maturity securities		16,434		20,410
Investments in equity securities		350,719		281,170
Equity method investments		17,375		17,303
Loans and finance receivables		20,751		19,201
Other receivables		35,388		32,310
Inventories		20,954		19,208
Property, plant and equipment		20,834		21,200
Equipment held for lease		14,918		14,601
Goodwill		47,117		47,121
Other intangible assets		28,486		29,462
Deferred charges - retroactive reinsurance		10,639		12,441
Other		15,854		14,580
Total assets		743,323		664,021
LIABILITIES
Unpaid losses and loss adjustment expenses		86,664		79,854
Unpaid losses and loss adjustment expenses under retroactive reinsurance contracts		38,256		40,966
Unearned premiums		23,512		21,395
Life, annuity and health insurance benefits		22,452		21,616
Other policyholder liabilities		9,330		8,670
Accounts payable, accruals and other liabilities		30,376		30,344
Aircraft repurchase liabilities and unearned lease revenues		5,849		5,856
Notes payable and other borrowings		39,272		41,522
Total liabilities		255,711		250,223
Railroad, Utilities and Energy [Member]
ASSETS
Cash and cash equivalents	[4]	2,865		3,276
Receivables		4,177		3,542
Property, plant and equipment		155,530		151,216
Goodwill		26,758		26,613
Other intangible assets		1,151		1,222
Regulatory assets		3,963		3,440
Other		22,168		21,621
Total assets		215,461		209,708
LIABILITIES
Accounts payable, accruals and other liabilities		15,696		15,224
Regulatory liabilities		7,214		7,475
Notes payable and other borrowings		74,990		75,373
Total liabilities		$ 97,900		$ 98,072

[1] Approximately 73% of the aggregate fair value was concentrated in four companies (American Express Company – $24.8 billion; Apple Inc. – $161.2 billion; Bank of America Corporation – $46.0 billion and The Coca-Cola Company – $23.7 billion).

[2] Approximately 68% of the aggregate fair value was concentrated in four companies (American Express Company – $18.3 billion; Apple Inc. – $120.4 billion; Bank of America Corporation – $31.3 billion and The Coca-Cola Company – $21.9 billion).

[3] Net of accumulated goodwill impairments of $11.0 billion as of December 31, 2021 and 2020.

[4] Includes U.S. Treasury Bills with maturities of three months or less when purchased of $61.7 billion at December 31, 2021 and $23.2 billion at December 31, 2020.