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Property, Plant & Equipment
6 Months Ended
Jun. 30, 2018
Property, Plant and Equipment [Abstract]  
Property, Plant & Equipment
PROPERTY, PLANT & EQUIPMENT
The following table summarizes our property, plant and equipment as of June 30, 2018 and December 31, 2017:
Millions of dollars

June 30, 2018

December 31, 2017
Land

$
117


$
123

Buildings

1,655


1,789

Machinery and equipment

7,750


8,946

Accumulated depreciation

(6,095
)

(6,825
)
Property, plant and equipment, net

$
3,427


$
4,033


During the six months ended June 30, 2018, we disposed of buildings, machinery and equipment no longer in use with a net book value of $14 million and certain land use rights were transferred to the China government resulting in a $27 million gain recorded in cost of products sold.