Property, plant and equipment including equipment held for lease (Tables)

12 Months Ended

Dec. 31, 2023

Schedule of depreciation expense

Depreciation expense for each of the three years ending December 31, 2023 is summarized below (in millions).

	2023		2022		2021
Insurance and other	$	2,388	$	2,276	$	2,318
Railroad, utilities and energy		7,004		6,181		5,990
	$	9,392	$	8,457	$	8,308

Insurance and Other [Member]

Schedule of property, plant and equipment

A summary of property, plant and equipment of our insurance and other businesses follows (in millions).

	December 31,
	2023			2022
Land, buildings and improvements	$	15,058		$	14,761
Machinery and equipment		28,010			26,690
Furniture, fixtures and other		5,566			4,847
		48,634			46,298
Accumulated depreciation		(26,604	)		(25,185	)
	$	22,030		$	21,113

Railroad, Utilities and Energy [Member]

Schedule of property, plant and equipment

A summary of property, plant and equipment of railroad and utilities and energy businesses follows (in millions). The utility generation, transmission and distribution systems and interstate natural gas pipeline assets are owned by regulated public utility and natural gas pipeline subsidiaries. Assets of PTC are included within the utilities and energy section below.

	December 31,
	2023			2022
Railroad:
Land, track structure and other roadway	$	71,692		$	67,350
Locomotives, freight cars and other equipment		16,256			16,031
Construction in progress		1,715			1,743
		89,663			85,124
Accumulated depreciation		(19,464	)		(17,899	)
		70,199			67,225
Utilities and energy:
Utility generation, transmission and distribution systems		96,195			92,759
Interstate natural gas pipeline assets		19,226			18,328
Independent power plants and other		14,781			14,650
Land, buildings and improvements		4,540			—
Machinery, equipment and other		3,855			—
Construction in progress		9,551			5,357
		148,148			131,094
Accumulated depreciation		(40,731	)		(38,051	)
		107,417			93,043
	$	177,616		$	160,268