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Acquisitions, Goodwill, and Intangible Assets
 12 Months Ended
Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]  
Acquisitions, Goodwill, and Intangible Assets Acquisitions, Goodwill, and Intangible Assets
During the year ended December 31, 2023, we completed business acquisitions with total purchase consideration of $467 million in cash, including $88 million and $352 million allocated to intangible assets and goodwill, respectively. Goodwill generated from these business acquisitions was primarily attributable to expected synergies and potential monetization opportunities. The amount of goodwill generated that was deductible for tax purposes was not material. Acquisition-related costs were immaterial and were expensed as incurred. Pro forma historical results of operations related to these business acquisitions have not been presented because they are not significant to our consolidated financial statements, either individually or in aggregate. We have included the financial results of these acquired businesses in our consolidated financial statements from their respective dates of acquisition.

Changes in the carrying amount of goodwill by reportable segment for the years ended December 31, 2023 and 2022 are as follows (in millions):
Family of AppsReality LabsTotal
Goodwill at December 31, 2021$18,458 $739 $19,197 
Acquisitions773 364 1,137 
Adjustments19 (47)(28)
Goodwill at December 31, 202219,250 1,056 20,306 
Acquisitions— 357 357 
Adjustments(4)(5)(9)
Goodwill at December 31, 2023$19,246 $1,408 $20,654 
The following table sets forth the major categories of the intangible assets and their weighted-average remaining useful lives (in millions):
December 31, 2023December 31, 2022
Weighted-Average Remaining Useful Lives
 (in years)		Gross Carrying AmountAccumulated AmortizationNet Carrying AmountGross Carrying AmountAccumulated AmortizationNet Carrying Amount
Acquired technology4.7$478 $(182)$296 $507 $(144)$363 
Acquired patents2.4287 (233)54 380 (289)91 
Other2.328 (15)13 86 (25)61 
Total finite-lived assets793 (430)363 973 (458)515 
Total indefinite-lived assetsN/A425 — 425 382 — 382 
Total intangible assets$1,218 $(430)$788 $1,355 $(458)$897 

Amortization expense of intangible assets for the years ended December 31, 2023, 2022, and 2021 was $161 million, $185 million, and $407 million, respectively.

As of December 31, 2023, expected amortization expense for the unamortized finite-lived intangible assets for the next five years and thereafter is as follows (in millions):
2024$136 
202597 
202646 
202724 
202815 
Thereafter45 
Total$363