Consolidated Balance Sheets - USD ($) $ in Millions		Mar. 31, 2025	Dec. 31, 2024
Assets
Investments in fixed maturity securities		$ 15,035	$ 15,364
Investments in equity securities		263,735	271,588
Equity method investments		31,144	31,134
Loans and finance receivables		28,131	27,798
Inventories		24,034	24,008
Equipment held for lease		17,984	17,828
Goodwill	[1]	84,007	83,880
Total assets		1,164,532	1,153,881
Liabilities
Life, annuity and health insurance benefits		17,734
Income taxes, principally deferred		86,002	85,870
Total liabilities		507,790	502,226
Shareholders’ equity:
Common stock		8	8
Capital in excess of par value		35,665	35,665
Accumulated other comprehensive income		(3,084)	(3,584)
Retained earnings		700,821	696,218
Treasury stock, at cost		(78,939)	(78,939)
Berkshire shareholders' equity		654,471	649,368
Noncontrolling interests		2,271	2,287
Total shareholders’ equity		656,742	651,655
Total liabilities and shareholders' equity		1,164,532	1,153,881
Insurance and Other [Member]
Assets
Cash and cash equivalents	[2]	36,892	44,333
Short-term investments in U.S. Treasury Bills		305,501	286,472
Investments in fixed maturity securities		15,035	15,364
Investments in equity securities		263,735	271,588
Equity method investments		31,144	31,134
Loans and finance receivables		28,131	27,798
Other receivables		47,401	43,887
Inventories		24,034	24,008
Property, plant and equipment		30,215	30,071
Equipment held for lease		17,984	17,828
Goodwill		56,974	56,860
Other intangible assets		34,331	34,638
Deferred charges - retroactive reinsurance		8,628	8,797
Other		25,291	24,994
Total assets		925,296	917,772
Liabilities
Unpaid losses and loss adjustment expenses		117,123	115,151
Unpaid losses and loss adjustment expenses - retroactive reinsurance contracts		31,974	32,443
Unearned premiums		32,306	30,808
Life, annuity and health insurance benefits		17,734	17,616
Other policyholder liabilities		10,782	10,703
Accounts payable, accruals and other liabilities		37,090	37,489
Payable for purchases of U.S. Treasury Bills		14,380	12,769
Aircraft repurchase liabilities and unearned lease revenues		9,509	9,356
Notes payable and other borrowings		44,461	44,885
Liabilities, excluding income taxes, principally deferred, Total		315,359	311,220
Railroad, Utilities and Energy [Member]
Assets
Cash and cash equivalents	[2]	5,288	3,396
Receivables		4,291	4,503
Property, plant and equipment		176,559	175,030
Goodwill		27,033	27,020
Regulatory assets		5,299	5,349
Other		20,766	20,811
Total assets		239,236	236,109
Liabilities
Accounts payable, accruals and other liabilities		17,916	18,226
Regulatory liabilities		7,047	7,033
Notes payable and other borrowings		81,466	79,877
Liabilities, excluding income taxes, principally deferred, Total		$ 106,429	$ 105,136

[1] Net of accumulated goodwill impairments of $11.5 billion as of March 31, 2025 and December 31, 2024 and $11.1 billion as of December 31, 2023.

[2] Includes U.S. Treasury Bills with maturities of three months or less when purchased of $8.6 billion at March 31, 2025 and $14.4 billion at December 31, 2024.