CONDENSED CONSOLIDATED STATEMENTS OF REDEEMABLE NON-CONTROLLING INTERESTS AND EQUITY - USD ($) shares in Thousands, $ in Millions	Total	Redeemable Non-Controlling Interests	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Non-Redeemable Non-Controlling Interests
Beginning Balance at Dec. 31, 2021		$ 204
Redeemable Non-Controlling Interests
Foreign currency translation adjustment	$ 19				$ 19
Net income (loss)		1
Ending Balance at Mar. 31, 2022		205
Beginning balance (in shares) at Dec. 31, 2021			1,949,316
Beginning balance at Dec. 31, 2021	15,145		$ 0	$ 38,608	(524)	$ (23,626)	$ 687
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)			1,093
Exercise of stock options	6			6
Stock-based compensation	369			369
Issuance of common stock for settlement of RSUs (in shares)			9,569
Shares withheld related to net share settlement (in shares)			(316)
Shares withheld related to net share settlement	(11)			(11)
Issuance of common stock for settlement of contingent consideration liability (in shares)			132
Issuance of common stock for settlement of contingent consideration liability	5			5
Foreign currency translation adjustment	19				19
Net income (loss)	(5,920)					(5,930)	10
Ending balance (in shares) at Mar. 31, 2022			1,959,794
Ending balance at Mar. 31, 2022	9,613		$ 0	38,977	(505)	(29,556)	697
Beginning Balance at Dec. 31, 2021		204
Redeemable Non-Controlling Interests
Foreign currency translation adjustment	114
Ending Balance at Sep. 30, 2022		430
Beginning balance (in shares) at Dec. 31, 2021			1,949,316
Beginning balance at Dec. 31, 2021	15,145		$ 0	38,608	(524)	(23,626)	687
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Unrealized gain (loss) on investments in available-for-sale debt securities, net of tax	0
Foreign currency translation adjustment	114
Ending balance (in shares) at Sep. 30, 2022			1,990,396
Ending balance at Sep. 30, 2022	6,970		$ 0	40,020	(410)	(33,363)	723
Beginning Balance at Mar. 31, 2022		205
Redeemable Non-Controlling Interests
Foreign currency translation adjustment	(200)	(3)			(200)
Recognition of non-controlling interest upon capital investment		18
Net income (loss)		(26)
Ending Balance at Jun. 30, 2022		194
Beginning balance (in shares) at Mar. 31, 2022			1,959,794
Beginning balance at Mar. 31, 2022	9,613		$ 0	38,977	(505)	(29,556)	697
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)			1,376
Exercise of stock options	5			5
Stock-based compensation	484			484
Issuance of common stock for settlement of RSUs (in shares)			12,146
Issuance of common stock under the Employee Stock Purchase Plan (in shares)			2,988
Issuance of common stock under the Employee Stock Purchase Plan	59			59
Shares withheld related to net share settlement (in shares)			(79)
Shares withheld related to net share settlement	(2)			(2)
Foreign currency translation adjustment	(200)	(3)			(200)
Net income (loss)	(2,590)					(2,601)	11
Ending balance (in shares) at Jun. 30, 2022			1,976,225
Ending balance at Jun. 30, 2022	7,369		$ 0	39,523	(705)	(32,157)	708
Redeemable Non-Controlling Interests
Foreign currency translation adjustment	295	(6)			295
Recognition of non-controlling interest upon capital investment	5	250					5
Net income (loss)		(8)
Ending Balance at Sep. 30, 2022		430
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)			894
Exercise of stock options	5			5
Stock-based compensation	494			494
Issuance of common stock for settlement of RSUs (in shares)			13,355
Shares withheld related to net share settlement (in shares)			(78)
Shares withheld related to net share settlement	(2)			(2)
Unrealized gain (loss) on investments in available-for-sale debt securities, net of tax	0
Foreign currency translation adjustment	295	(6)			295
Net income (loss)	(1,196)					(1,206)	10
Ending balance (in shares) at Sep. 30, 2022			1,990,396
Ending balance at Sep. 30, 2022	6,970		$ 0	40,020	(410)	(33,363)	723
Beginning Balance at Dec. 31, 2022		430
Redeemable Non-Controlling Interests
Foreign currency translation adjustment	$ (155)				(155)
Net income (loss)		(11)
Ending Balance at Mar. 31, 2023		419
Beginning balance (in shares) at Dec. 31, 2022	2,005,486		2,005,486
Beginning balance at Dec. 31, 2022	$ 8,074		$ 0	40,550	(443)	(32,767)	734
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)			1,208
Exercise of stock options	5			5
Stock-based compensation	482			482
Issuance of common stock for settlement of RSUs (in shares)			12,708
Shares withheld related to net share settlement (in shares)			(208)
Shares withheld related to net share settlement	(7)			(7)
Foreign currency translation adjustment	(155)				(155)
Net income (loss)	(146)					(157)	11
Ending balance (in shares) at Mar. 31, 2023			2,019,194
Ending balance at Mar. 31, 2023	8,253		$ 0	41,030	(598)	(32,924)	745
Beginning Balance at Dec. 31, 2022		430
Redeemable Non-Controlling Interests
Foreign currency translation adjustment	$ (35)
Ending Balance at Sep. 30, 2023		394
Beginning balance (in shares) at Dec. 31, 2022	2,005,486		2,005,486
Beginning balance at Dec. 31, 2022	$ 8,074		$ 0	40,550	(443)	(32,767)	734
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Unrealized gain (loss) on investments in available-for-sale debt securities, net of tax	(2)
Foreign currency translation adjustment	$ (35)
Ending balance (in shares) at Sep. 30, 2023	2,053,437		2,053,437
Ending balance at Sep. 30, 2023	$ 10,125		$ 0	42,147	(480)	(32,309)	767
Beginning Balance at Mar. 31, 2023		419
Redeemable Non-Controlling Interests
Foreign currency translation adjustment	157				157
Net income (loss)		(11)
Ending Balance at Jun. 30, 2023		408
Beginning balance (in shares) at Mar. 31, 2023			2,019,194
Beginning balance at Mar. 31, 2023	8,253		$ 0	41,030	(598)	(32,924)	745
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)			1,859
Exercise of stock options	10			10
Stock-based compensation	515			515
Issuance of common stock for settlement of RSUs (in shares)			14,096
Issuance of common stock under the Employee Stock Purchase Plan (in shares)			4,078
Issuance of common stock under the Employee Stock Purchase Plan	85			85
Shares withheld related to net share settlement (in shares)			(76)
Shares withheld related to net share settlement	(3)			(3)
Repurchase of restricted common stock awards (in shares)			(259)
Unrealized gain (loss) on investments in available-for-sale debt securities, net of tax	(2)				(2)
Foreign currency translation adjustment	157				157
Net income (loss)	405					394	11
Ending balance (in shares) at Jun. 30, 2023			2,038,892
Ending balance at Jun. 30, 2023	9,420		$ 0	41,637	(443)	(32,530)	756
Redeemable Non-Controlling Interests
Foreign currency translation adjustment	(37)	(1)			(37)
Net income (loss)		(13)
Ending Balance at Sep. 30, 2023		394
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)			1,185
Exercise of stock options	9			9
Stock-based compensation	504			504
Issuance of common stock for settlement of RSUs (in shares)			13,433
Shares withheld related to net share settlement (in shares)			(73)
Shares withheld related to net share settlement	(3)			(3)
Unrealized gain (loss) on investments in available-for-sale debt securities, net of tax	0
Foreign currency translation adjustment	(37)	$ (1)			(37)
Net income (loss)	$ 232					221	11
Ending balance (in shares) at Sep. 30, 2023	2,053,437		2,053,437
Ending balance at Sep. 30, 2023	$ 10,125		$ 0	$ 42,147	$ (480)	$ (32,309)	$ 767