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

12 Months Ended

Dec. 31, 2019

Schedule of depreciation expense

Depreciation expense for each of the three years ending December 31, 2019 is summarized below (in millions).

	2019		2018		2017
Insurance and other	$	2,269	$	2,186	$	2,116
Railroad, utilities and energy		5,297		5,098		4,852
	$	7,566	$	7,284	$	6,968

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,
	2019			2018
Land	$	2,540		$	2,536
Buildings and improvements		10,719			9,959
Machinery and equipment		24,285			22,574
Furniture, fixtures and other		4,666			4,758
		42,210			39,827
Accumulated depreciation		(20,772	)		(19,199	)
	$	21,438		$	20,628

Railroad, Utilities and Energy [Member]

Schedule of property, plant and equipment

A summary of property, plant and equipment of our railroad and our 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.

	December 31,
	2019			2018
Railroad:
Land, track structure and other roadway	$	62,404		$	59,509
Locomotives, freight cars and other equipment		13,482			13,016
Construction in progress		748			664
		76,634			73,189
Accumulated depreciation		(12,101	)		(10,004	)
		64,533			63,185
Utilities and energy:
Utility generation, transmission and distribution systems		81,127			77,288
Interstate natural gas pipeline assets		8,165			7,524
Independent power plants and other assets		8,817			8,324
Construction in progress		3,732			3,110
		101,841			96,246
Accumulated depreciation		(28,536	)		(27,651	)
		73,305			68,595
	$	137,838		$	131,780