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Property, plant and equipment
12 Months Ended
Dec. 31, 2014
Property, Plant and Equipment Disclosure [Abstract]  
Property, Plant and Equipment Disclosure
7.
PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment are summarized as follows (in millions):
 
 
December 31,
 
 
2014
 
2013
Property, plant and equipment, net:
 
 
 
 
Buildings and improvements (including leasehold improvements)
 
$
997

 
$
835

Laboratory and manufacturing equipment
 
327

 
250

Office and computer equipment
 
305

 
258

Construction in progress
 
411

 
129

Subtotal
 
2,040

 
1,472

Less accumulated depreciation and amortization (including $2 for 2014 and 2013 relating to capitalized leased equipment)
 
(620
)
 
(502
)
Subtotal
 
1,420

 
970

Land
 
254

 
196

Total
 
$
1,674

 
$
1,166