The carrying amounts of identifiable intangible assets are summarized as follows:
(in millions)
Indefinite-lived
Finite-lived
Total
December 31, 2017
$
17,178
211
17,389
Amortization expense
—
(11
)
March 31, 2018
200
17,378
The carrying amount of intangible assets, intangible assets acquired during the period and any other changes to intangible assets during the period and for each reportable segment.
No definition available.