º¬Ð߲ݴ«Ã½

(6)ÌýÌýÌýIntangible Assets

Goodwill

Changes in the carrying amount of goodwill are as follows:

​

​

Intangible Assets Subject to Amortization

Amortization expense for intangible assets with finite useful lives was $94 million and $106 million for the three months ended JuneÌý30, 2019 and 2018, respectively, and $194 million and $215 million for the six months ended JuneÌý30, 2019 and 2018, respectively. Based on its amortizable intangible assets as of JuneÌý30, 2019, º¬Ð߲ݴ«Ã½ expects that amortization expense will be as follows for the next five years (amounts in millions):

​

​