CONDENSED CONSOLIDATED STATEMENTS OF REDEEMABLE NON-CONTROLLING INTERESTS AND EQUITY - USD ($) shares in Thousands, $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment	Redeemable Non-Controlling Interests	Common Stock	Additional Paid-In Capital	Additional Paid-In Capital Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Non-Redeemable Non-Controlling Interests
Beginning Balance at Dec. 31, 2020			$ 787
Redeemable Non-Controlling Interests
Recognition of non-controlling interest upon acquisition			56
Derecognition of non-controlling interests upon divestiture	$ (701)		(356)						$ (701)
Net income (loss)			(14)
Ending Balance at Mar. 31, 2021			473
Beginning balance (in shares) at Dec. 31, 2020				1,849,794
Beginning balance at Dec. 31, 2020	12,967	$ (243)		$ 0	$ 35,931	$ (243)	$ (535)	$ (23,130)	701
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)				3,518
Exercise of stock options	35				35
Stock-based compensation	287				287
Issuance of common stock for settlement of Careem Convertible Notes (in shares)				2,872
Issuance of common stock for settlement of Careem Convertible Notes	158				158
Issuance of common stock as consideration for acquisitions (in shares)				505
Issuance of common stock as consideration for acquisition	28				28
Issuance of common stock for settlement of RSUs (in shares)				10,924
Shares withheld related to net share settlement (in shares)				(244)
Shares withheld related to net share settlement	(14)				(14)
Derecognition of non-controlling interests upon divestiture	(701)		(356)						(701)
Unrealized gain on investments in available-for-sale securities, net of tax	1,156						1,156
Foreign currency translation adjustment	33						33
Net income (loss)	(108)							(108)
Ending balance (in shares) at Mar. 31, 2021				1,867,369
Ending balance at Mar. 31, 2021	13,598			$ 0	36,182		654	(23,238)	0
Beginning Balance at Dec. 31, 2020			787
Ending Balance at Jun. 30, 2021			1,569
Beginning balance (in shares) at Dec. 31, 2020				1,849,794
Beginning balance at Dec. 31, 2020	12,967	$ (243)		$ 0	35,931	$ (243)	(535)	(23,130)	701
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Unrealized gain on investments in available-for-sale securities, net of tax	1,162
Foreign currency translation adjustment	54
Ending balance (in shares) at Jun. 30, 2021				1,880,310
Ending balance at Jun. 30, 2021	14,175			$ 0	35,588		681	(22,094)	0
Beginning Balance at Mar. 31, 2021			473
Redeemable Non-Controlling Interests
Recognition of non-controlling interest upon acquisition			76
Re-measurement of non-controlling interest	(1,058)		1,052		(1,058)
Net income (loss)			(32)
Ending Balance at Jun. 30, 2021			1,569
Beginning balance (in shares) at Mar. 31, 2021				1,867,369
Beginning balance at Mar. 31, 2021	13,598			$ 0	36,182		654	(23,238)	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)				2,454
Exercise of stock options	40				40
Stock-based compensation	282				282
Reclassification of share-based award liability to additional paid-in capital	4				4
Issuance of common stock under the Employee Stock Purchase Plan (in shares)				1,710
Issuance of common stock under the Employee Stock Purchase Plan	67				67
Issuance of common stock for settlement of Careem Convertible Notes (in shares)				1,352
Issuance of common stock for settlement of Careem Convertible Notes	74				74
Issuance of common stock for settlement of RSUs (in shares)				7,480
Shares withheld related to net share settlement (in shares)				(55)
Shares withheld related to net share settlement	(3)				(3)
Re-measurement of non-controlling interest	(1,058)		1,052		(1,058)
Unrealized gain on investments in available-for-sale securities, net of tax	6						6
Foreign currency translation adjustment	21						21
Net income (loss)	1,144							1,144
Ending balance (in shares) at Jun. 30, 2021				1,880,310
Ending balance at Jun. 30, 2021	$ 14,175			$ 0	35,588		681	(22,094)	0
Beginning Balance at Dec. 31, 2021			204
Redeemable Non-Controlling Interests
Net income (loss)			1
Ending Balance at Mar. 31, 2022			205
Beginning balance (in shares) at Dec. 31, 2021	1,949,316			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
Ending Balance at Jun. 30, 2022			194
Beginning balance (in shares) at Dec. 31, 2021	1,949,316			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 on investments in available-for-sale securities, net of tax	0
Foreign currency translation adjustment	$ (181)
Ending balance (in shares) at Jun. 30, 2022	1,976,225			1,976,225
Ending balance at Jun. 30, 2022	$ 7,369			$ 0	39,523		(705)	(32,157)	708
Beginning Balance at Mar. 31, 2022			205
Redeemable Non-Controlling Interests
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 under the Employee Stock Purchase Plan (in shares)				2,988
Issuance of common stock under the Employee Stock Purchase Plan	59				59
Issuance of common stock for settlement of RSUs (in shares)				12,146
Shares withheld related to net share settlement (in shares)				(79)
Shares withheld related to net share settlement	(2)				(2)
Unrealized gain on investments in available-for-sale securities, net of tax	0
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			1,976,225
Ending balance at Jun. 30, 2022	$ 7,369			$ 0	$ 39,523		$ (705)	$ (32,157)	$ 708