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Goodwill and Intangible Assets, Net
 12 Months Ended
Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets, Net Goodwill and Intangible Assets, Net
The changes in the carrying amount of goodwill for the periods presented were as follows (in millions):
Total
Balance as of December 31, 2021$316 
Acquisitions2,054 
Balance as of December 31, 20222,370 
Goodwill measurement period adjustment3 
Effects of foreign currency translation59 
Balance as of December 31, 2023$2,432 
There was no goodwill impairment during the periods presented. See Note 4 – "Acquisitions" for further details of goodwill recorded.
Intangible assets, net consisted of the following as of December 31, 2022 (in millions):
Weighted-average
Remaining Useful
Life (in years)		Gross Carrying
Value		Accumulated
Amortization		Net Carrying
Value
Existing technology5.3$236 $(88)$148 
Merchant relationships10.0294 (26)268 
Courier relationships0.412 (7)5 
Customer relationships2.4119 (30)89 
Trade name and trademarks9.4277 (22)255 
Balance as of December 31, 2022$938 $(173)$765 
Intangible assets, net consisted of the following as of December 31, 2023 (in millions):
Weighted-average
Remaining Useful
Life (in years)		Gross Carrying
Value		Accumulated
Amortization		Net Carrying
Value
Existing technology4.3$241 $(117)$124 
Merchant relationships9.1302 (56)246 
Courier relationships—12 (12)— 
Customer relationships1.4123 (69)54 
Trade name and trademarks8.4286 (51)235 
Balance as of December 31, 2023$964 $(305)$659 
Amortization expense associated with intangible assets was $13 million, $99 million, and $127 million for the years ended December 31, 2021, 2022, and 2023, respectively.
The estimated future amortization expense of intangible assets as of December 31, 2023 was as follows (in millions):
Year Ending December 31,
Amortization
Expense
2024$125 
2025100 
202682 
202780 
202864 
Thereafter208 
Total estimated future amortization expense$659