PROPERTY

12 Months Ended

Dec. 31, 2020

Property, Plant and Equipment [Abstract]

Schedule of property

The following table provides a breakdown of property:

Property at Dec 31	Estimated Useful Lives (Years)
In millions		2020		2019
Land and land improvements	0-25	$	186	$	258
Buildings	5-50	421		408
Machinery and equipment	3-20	5,974		6,097
Other property	3-30	372		357
Construction in progress	—	136		127
Total property		$	7,089	$	7,247

Schedule of other items related to property

The following table provides information regarding depreciation expense and capitalized interest:

In millions	2020		2019		2018
Depreciation expense	$	181	$	175	$	179
Capitalized interest	$	6	$	8	$	7