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Goodwill and other intangible assets (Tables)
 3 Months Ended
Mar. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of goodwill
The change in the carrying amount of goodwill was as follows (in millions):
 
Three months ended
March 31, 2019
Beginning balance
$
14,699

Currency translation adjustment
(7
)
Ending balance
$
14,692
Schedule of identifiable intangible assets
Other intangible assets consisted of the following (in millions):
 
March 31, 2019
 
December 31, 2018
 
Gross
carrying
amounts
 
Accumulated
amortization
 
Other intangible
assets, net
 
Gross
carrying
amounts
 
Accumulated
amortization
 
Other intangible
assets, net
Finite-lived intangible assets:
 
 
 
 
 
 
 
 
 
 
 
Developed-product-technology rights
$
12,559

 
$
(7,639
)
 
$
4,920

 
$
12,573

 
$
(7,479
)
 
$
5,094

Licensing rights
3,693

 
(2,064
)
 
1,629

 
3,772

 
(2,032
)
 
1,740

Marketing-related rights
1,211

 
(947
)
 
264

 
1,297

 
(1,019
)
 
278

Research and development technology rights
1,145

 
(889
)
 
256

 
1,148

 
(872
)
 
276

Total finite-lived intangible assets
18,608

 
(11,539
)
 
7,069

 
18,790

 
(11,402
)
 
7,388

Indefinite-lived intangible assets:
 
 
 
 
 
 
 
 
 
 
 
In-process research and development
55

 
—

 
55

 
55

 
—

 
55

Total other intangible assets
$
18,663

 
$
(11,539
)
 
$
7,124

 
$
18,845

 
$
(11,402
)
 
$
7,443