PROPERTY (Tables)

12 Months Ended

Dec. 31, 2016

Property, Plant and Equipment [Abstract]

Schedule of property

Property at December 31 In millions	Estimated Useful  Lives (Years)	2016		2015
Land	—	$	1,157	$	855
Land and waterway improvements	15-25	1,367		1,282
Buildings	5-55	5,935		4,793
Machinery and equipment	3-20	38,499		35,454
Utility and supply lines	5-20	2,117		2,053
Other property	3-50	2,263		2,010
Construction in progress	—	6,100		4,355
Total property		$	57,438	$	50,802

Schedule of other items related to property

In millions	2016		2015		2014
Depreciation expense	$	2,130	$	1,908	$	2,136
Manufacturing maintenance and repair costs	$	1,972	$	1,991	$	2,117
Capitalized interest	$	243	$	218	$	125