PROPERTY

12 Months Ended

Dec. 31, 2019

Property, Plant and Equipment [Abstract]

PROPERTY

PROPERTY

The following table provides a breakdown of property:

Property at Dec 31	Estimated Useful  Lives (Years)	2019		2018
In millions
Land and land improvements	0-25	$	2,177	$	2,059
Buildings	5-50	4,742		4,745
Machinery and equipment	3-25	40,651		40,250
Other property	3-50	5,354		5,084
Construction in progress	—	1,986		1,846
Total property		$	54,910	$	53,984

In millions	2019		2018		2017
Depreciation expense	$	2,156	$	2,174	$	1,955
Capitalized interest	$	80	$	88	$	240