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Goodwill and Intangible Assets
6 Months Ended
Jun. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets Goodwill and Intangible Assets
Goodwill

The following table presents goodwill activity for the period indicated (in millions):
 December 31,
2023
Goodwill
Acquired
 Adjustments June 30,
2024
Goodwill$4,267 $69 $(51)$4,285 

Goodwill acquired during the six months ended June 30, 2024 relates to the second quarter acquisition of Goldin, a leading U.S.-based auction house for high-value trading cards and collectibles. The adjustments to goodwill during the six months ended June 30, 2024 were primarily due to foreign currency translation.

Intangible Assets

Intangible assets are reported within other assets in our condensed consolidated balance sheet. The following table presents components of identifiable intangible assets as of the dates indicated (in millions, except years):
 June 30, 2024December 31, 2023
Gross Carrying AmountAccumulated AmortizationNet Carrying AmountWeighted Average Useful Life (Years)Gross Carrying AmountAccumulated AmortizationNet Carrying AmountWeighted Average Useful Life (Years)
Intangible assets:        
Customer lists and user base$257 $(203)$54 8$245 $(203)$42 8
Marketing related101 (59)42 779 (58)21 6
Developed technologies242 (200)42 4240 (191)49 4
All other158 (157)1 3159 (157)2 3
Total$758 $(619)$139  $723 $(609)$114 

For the three and six months ended June 30, 2024, amortization expense for intangible assets was $9 million and $17 million, respectively, compared to $8 million and $18 million during the same periods in 2023.

The following table presents expected future intangible asset amortization as of the date indicated (in millions):
June 30, 2024
Remaining 2024$21 
202539 
202629 
202724 
20287 
Thereafter
19 
Total$139