CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Millions, $ in Millions	Total	Class A and Class B Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss	Retained Earnings
Balances at beginning of period (in shares) at Dec. 31, 2018		2,854
Balances at beginning of period at Dec. 31, 2018	$ 84,127	$ 0	$ 42,906	$ (760)	$ 41,981
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock (in shares)		25
Issuance of common stock	14		14
Shares withheld related to net share settlement (in shares)		(10)
Shares withheld related to net share settlement	(1,954)		(1,423)		(531)
Share-based compensation	3,562		3,562
Share repurchases (in shares)		(15)
Share repurchases	(2,797)				(2,797)
Other comprehensive income (loss)	(89)			(89)
Net income	11,136				11,136
Balances at end of period (in shares) at Sep. 30, 2019		2,854
Balances at end of period at Sep. 30, 2019	93,999	$ 0	45,059	(849)	49,789
Balances at beginning of period (in shares) at Jun. 30, 2019		2,854
Balances at beginning of period at Jun. 30, 2019	88,762	$ 0	44,277	(483)	44,968
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock (in shares)		9
Issuance of common stock	5		5
Shares withheld related to net share settlement (in shares)		(3)
Shares withheld related to net share settlement	(591)		(472)		(119)
Share-based compensation	1,249		1,249
Share repurchases (in shares)		(6)
Share repurchases	(1,151)				(1,151)
Other comprehensive income (loss)	(366)			(366)
Net income	6,091				6,091
Balances at end of period (in shares) at Sep. 30, 2019		2,854
Balances at end of period at Sep. 30, 2019	93,999	$ 0	45,059	(849)	49,789
Balances at beginning of period (in shares) at Dec. 31, 2019		2,852
Balances at beginning of period at Dec. 31, 2019	101,054	$ 0	45,851	(489)	55,692
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock (in shares)		28
Issuance of common stock	0		0
Shares withheld related to net share settlement (in shares)		(10)
Shares withheld related to net share settlement	(2,444)		(1,693)		(751)
Share-based compensation	$ 4,752		4,752
Share repurchases (in shares)	(20)	(20)
Share repurchases	$ (4,355)				(4,355)
Other comprehensive income (loss)	797			797
Net income	17,927				17,927
Balances at end of period (in shares) at Sep. 30, 2020		2,850
Balances at end of period at Sep. 30, 2020	117,731	$ 0	48,910	308	68,513
Balances at beginning of period (in shares) at Jun. 30, 2020		2,850
Balances at beginning of period at Jun. 30, 2020	110,447	$ 0	47,805	(142)	62,784
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock (in shares)		10
Issuance of common stock			0
Shares withheld related to net share settlement (in shares)		(3)
Shares withheld related to net share settlement	(1,000)		(617)		(383)
Share-based compensation	1,722		1,722
Share repurchases (in shares)		(7)
Share repurchases	(1,734)				(1,734)
Other comprehensive income (loss)	450			450
Net income	7,846				7,846
Balances at end of period (in shares) at Sep. 30, 2020		2,850
Balances at end of period at Sep. 30, 2020	$ 117,731	$ 0	$ 48,910	$ 308	$ 68,513