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Identifiable Intangible Assets (Tables)
3 Months Ended
Mar. 31, 2019
Summary of Identifiable Intangible Assets
Identifiable intangible assets consisted of the following:
 
 
 
Gross carrying amount net of

impairment
 
 
Accumulated amortization
 
 
Net carrying amount
 
 
 
March 31,
 
 
December 31,
 
 
March 31,
 
 
December 31,
 
 
March 31,
 
 
December 31,
 
 
 
2019
 
 
2018
 
 
2019
 
 
2018
 
 
2019
 
 
2018
 
 
 
(U.S. $ in millions)
 
Product rights
 
$
20,201
 
 
$
20,361
 
 
$
9,706
 
 
$
9,565
 
 
$
10,494
 
 
$
10,796
 
Trade names
 
 
603
 
 
 
606
 
 
 
100
 
 
 
91
 
 
 
503
 
 
 
515
 
In process research and development
 
 
2,193
 
 
 
2,694
 
 
 
 
 
 
 
 
 
2,193
 
 
 
2,694
 
Total
 
$
22,997
 
 
$
23,661
 
 
$
9,806
 
 
$
9,656
 
 
$
13,191
 
 
$
14,005