Consolidated Balance Sheets - USD ($) $ in Millions		Jun. 30, 2019		Dec. 31, 2018
ASSETS
Investments in fixed maturity securities		$ 19,962		$ 19,898
Investments in equity securities		200,516	[1]	172,757	[2]
Loans and finance receivables		16,807		16,280
Inventories		19,834		19,069
Equipment held for lease		14,741		14,298
Goodwill		81,269		81,025
Deferred charges under retroactive reinsurance contracts		13,634		14,104
Total assets		760,108		707,794
LIABILITIES
Unpaid losses and loss adjustment expenses		70,781		68,458
Unpaid losses and loss adjustment expenses under retroactive reinsurance contracts		41,549		41,834
Income taxes, principally deferred		59,622		51,375
Total liabilities		373,717		355,294
Shareholders’ equity:
Common stock		8		8
Capital in excess of par value		35,610		35,707
Accumulated other comprehensive income		(4,678)		(5,015)
Retained earnings		356,846		321,112
Treasury stock, at cost		(5,242)		(3,109)
Berkshire Hathaway shareholders’ equity		382,544		348,703
Noncontrolling interests		3,847		3,797
Total shareholders’ equity		386,391		352,500
Total liabilities and shareholders' equity		760,108		707,794
Insurance and Other [Member]
ASSETS
Cash and cash equivalents	[3]	41,375		27,749
Short-term investments in U.S. Treasury Bills		77,745		81,506
Investments in fixed maturity securities		19,962		19,898
Investments in equity securities		200,516		172,757
Equity method investments		17,208		17,325
Loans and finance receivables		16,807		16,280
Other receivables		33,941		31,564
Inventories		19,834		19,069
Property, plant and equipment		21,204		20,628
Equipment held for lease		14,741		14,298
Goodwill		56,487		56,323
Other intangible assets		31,032		31,499
Deferred charges under retroactive reinsurance contracts		13,634		14,104
Other		13,097		9,307
Total assets		577,583		532,307
LIABILITIES
Unpaid losses and loss adjustment expenses		70,781		68,458
Unpaid losses and loss adjustment expenses under retroactive reinsurance contracts		41,549		41,834
Unearned premiums		20,113		18,093
Life, annuity and health insurance benefits		19,155		18,632
Other policyholder liabilities		7,826		7,675
Accounts payable, accruals and other liabilities		25,468		25,776
Derivative contract liabilities		1,470		2,452
Aircraft repurchase liabilities and unearned lease revenues		5,146		4,593
Notes payable and other borrowings		36,025		34,975
Total liabilities		227,533		222,488
Railroad, Utilities and Energy [Member]
ASSETS
Cash and cash equivalents	[3]	3,259		2,612
Receivables		3,641		3,666
Property, plant and equipment		133,515		131,780
Goodwill		24,782		24,702
Regulatory assets		3,073		3,067
Other		14,255		9,660
Total assets		182,525		175,487
LIABILITIES
Accounts payable, accruals and other liabilities		15,120		11,410
Regulatory liabilities		7,560		7,506
Notes payable and other borrowings		63,882		62,515
Total liabilities		$ 86,562		$ 81,431

[1] Approximately 69% of the aggregate fair value was concentrated in five companies (American Express Company – $18.7 billion; Apple Inc. – $50.5 billion; Bank of America Corporation – $27.6 billion; The Coca-Cola Company – $20.4 billion and Wells Fargo & Company – $20.5 billion).

[2] Approximately 68% of the aggregate fair value was concentrated in five companies (American Express Company – $14.5 billion; Apple Inc. – $40.3 billion; Bank of America Corporation – $22.6 billion; The Coca-Cola Company – $18.9 billion and Wells Fargo & Company – $20.7 billion).

[3] Cash and cash equivalents included U.S. Treasury Bills with maturities of three months or less when purchased of $16.2 billion at June 30, 2019 and $3.9 billion at December 31, 2018.