Property, Plant & Equipment (Tables)

6 Months Ended

Jun. 30, 2015

Property, Plant and Equipment [Abstract]

Summary of Property, Plant and Equipment

The following table summarizes our property, plant and equipment as of June 30, 2015 and December 31, 2014:

Millions of dollars	June 30, 2015			December 31, 2014
Land	$	134		$	142
Buildings	1,597			1,616
Machinery and equipment	8,111			8,182
Accumulated depreciation	(6,029		)	(5,959		)
Property, plant and equipment, net	$	3,813		$	3,981