Quarterly data

12 Months Ended

Dec. 31, 2020

Quarterly Financial Information Disclosure [Abstract]

Quarterly data

(28) Quarterly data

A summary of revenues and net earnings by quarter for each of the last two years follows. This information is unaudited. Amounts are in millions, except per share amounts.

	1st Quarter			2nd Quarter		3rd Quarter		4th Quarter
2020
Revenues	$	61,265		$	56,840	$	63,024	$	64,381
Net earnings (loss) attributable to Berkshire shareholders *		(49,746	)		26,295		30,137		35,835
Net earnings (loss) attributable to Berkshire shareholders per    equivalent Class A common share		(30,653	)		16,314		18,994		23,015
2019
Revenues	$	60,678		$	63,598	$	64,972	$	65,368
Net earnings attributable to Berkshire shareholders *		21,661			14,073		16,524		29,159
Net earnings attributable to Berkshire shareholders per    equivalent Class A common share		13,209			8,608		10,119		17,909

* Includes after-tax investment and derivative gains/losses as follows:

	1st Quarter			2nd Quarter		3rd Quarter		4th Quarter
2020	$	(55,617	)	$	31,645	$	24,737	$	30,826
2019		16,106			7,934		8,666		24,739