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Property, Plant and Equipment (Notes)
 6 Months Ended
Jun. 30, 2019
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment Disclosure [Text Block] PROPERTY, PLANT AND EQUIPMENT

(In millions)
June 30, 2019
December 31, 2018
June 30, 2018
Land and land improvements
$
463

$
468

$
508

Buildings
1,445

1,430

1,440

Machinery and equipment
5,214

4,863

4,759

Construction in progress
628

579

354

Total property, plant and equipment
7,750

7,340

7,061

Accumulated depreciation
(3,207
)
(2,796
)
(2,598
)
Total property, plant and equipment - net
$
4,543

$
4,544

$
4,463



Buildings, machinery and equipment and land improvements are depreciated over useful lives on a straight-line basis ranging from 1 year to 25 years. Capitalizable costs associated with computer software for internal use are amortized on a straight-line basis over 1 year to 8 years.

 
Three Months Ended
June 30,
Six Months Ended
June 30,
(In millions)
2019
2018
2019
2018
Depreciation expense
$
114

$
130

$
271

$
256