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(5)ÌýÌýÌýIntangible Assets

Goodwill

Changes in the carrying amount of goodwill are as follows:

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Intangible Assets Subject to Amortization

Amortization expense for intangible assets with finite useful lives was $82 million and $91 million for the three months ended MarchÌý31, 2021 and 2020, respectively. Based on its amortizable intangible assets as of MarchÌý31, 2021, º¬Ð߲ݴ«Ã½ expects that amortization expense will be as follows for the next five years (amounts in millions):

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