v3.22.0.1
Goodwill and Other Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Intangible Assets and Goodwill
Changes in the carrying amount of goodwill for the years ended December 31, 2020 and 2021 were as follows (in millions):
GoogleGoogle ServicesGoogle CloudOther BetsTotal
Balance as of December 31, 2019$19,921 $0 $0 $703 $20,624 
Acquisitions204 53 189 0 446 
Foreign currency translation and other adjustments46 56 5 (2)105 
Allocation in the fourth quarter of 2020(1)
(20,171)18,408 1,763 0 0 
Balance as of December 31, 20200 18,517 1,957 701 21,175 
Acquisitions0 1,325 382 103 1,810 
Foreign currency translation and other adjustments0 (16)(2)(11)(29)
Balance as of December 31, 2021$0 $19,826 $2,337 $793 $22,956 
(1)Represents reallocation of goodwill as a result of our change in segments in the fourth quarter of 2020. See Note 15 for further details.
Other Intangible Assets
Information regarding purchased intangible assets was as follows (in millions):
 As of December 31, 2020
 Gross
Carrying
Amount		Accumulated
Amortization		Net
Carrying
Amount
Patents and developed technology$4,639 $3,649 $990 
Customer relationships266 49 217 
Trade names and other624 461 163 
Total definite-lived intangible assets5,529 4,159 1,370 
Indefinite-lived intangible assets75 0 75 
Total intangible assets$5,604 $4,159 $1,445 
 As of December 31, 2021
 Gross
Carrying
Amount		Accumulated
Amortization		Net
Carrying
Value
Patents and developed technology$4,786 $4,112 $674 
Customer relationships506 140 366 
Trade names and other534 295 239 
Total definite-lived intangible assets5,826 4,547 1,279 
Indefinite-lived intangible assets138 0 138 
Total intangible assets$5,964 $4,547 $1,417 
Schedule of future amortization expense
As of December 31, 2021, expected amortization expense relating to purchased intangible assets for each of the next five years and thereafter was as follows (in millions): 
2022$537 
2023255 
2024226 
202598 
202661 
Thereafter102 
$1,279