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Goodwill and Intangible Assets
 12 Months Ended
Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets Goodwill and Intangible Assets
Goodwill balances consist of the following (in millions):
Carrying Amount
Balance as of December 31, 2020$241 
Goodwill acquired538 
Foreign currency translation adjustments(2)
Balance as of December 31, 2021$777 
Goodwill acquired68 
Foreign currency translation adjustments(21)
Balance as of December 31, 2022$824 

Intangible assets consist of the following (in millions):
 December 31, 2022December 31, 2021
Developed technology$434 $415 
Patents72 69 
Other15 14 
Intangible assets, gross$521 $498 
Less: accumulated amortization(289)(211)
Intangible assets, net$232 $287 
The weighted-average useful life of the acquired developed technology for each of the years ended December 31, 2022 and 2021 was approximately five years. Amortization expense for intangible assets was approximately $81 million, $76 million and $46 million for the years ended December 31, 2022, 2021 and 2020, respectively.
The following table presents the estimated future amortization expense related to intangible assets held at December 31, 2022 (in millions):
Years Ending December 31,
2023$78 
202471 
202551 
202620 
20276 
Thereafter6 
Total future amortization expense$232