PROPERTY

12 Months Ended

Dec. 31, 2018

Property, Plant and Equipment [Abstract]

Property

PROPERTY

The following table provides a breakdown of property:

Property at Dec 31	Estimated Useful Lives (Years)
In millions		2018		2017
Land and land improvements	0-25	$	285	$	283
Buildings	5-50	412		402
Machinery and equipment	3-20	6,205		6,049
Other property	3-30	338		325
Construction in progress	—	190		250
Total property		$	7,430	$	7,309

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

In millions	2018		2017		2016
Depreciation expense	$	179	$	176	$	166
Capitalized interest	$	7	$	10	$	13