Goodwill and Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Carrying Amount of Goodwill

The changes in the carrying amount of goodwill for the nine months ended September 30, 2020 are as follows (in millions): 

Balance as of December 31, 2019	$	18,715
Goodwill acquired	314
Effect of currency translation adjustment	2
Balance as of September 30, 2020	$	19,031

Schedule of Intangible Assets

The following table sets forth the major categories of the intangible assets and the weighted‑average remaining useful lives for those assets that are not already fully amortized (in millions):

		September 30, 2020							December 31, 2019
	Weighted-Average Remaining Useful Lives (in years)	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Acquired users	1.0	$	2,056	$	(1,767	)	$	289	$	2,056	$	(1,550	)	$	506
Acquired technology	3.0	1,293		(1,060		)	233		1,158		(986		)	172
Acquired patents	4.2	805		(665		)	140		805		(625		)	180
Trade names	1.9	641		(618		)	23		635		(604		)	31
Other	3.4	223		(164		)	59		162		(157		)	5
Total intangible assets		$	5,018	$	(4,274	)	$	744	$	4,816	$	(3,922	)	$	894

Expected Amortization Expense for Unamortized Acquired Intangible Assets

As of September 30, 2020, expected amortization expense for the unamortized acquired intangible assets for the next five years and thereafter is as follows (in millions):

The remainder of 2020	$	120
2021	388
2022	122
2023	54
2024	29
Thereafter	31
Total	$	744