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, 2017		2,906
Balances at beginning of period at Dec. 31, 2017	$ 74,347	$ 0	$ 40,584	$ (227)	$ 33,990
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock (in shares)		24
Issuance of common stock	7		7
Shares withheld related to net share settlement and other (in shares)		(10)
Shares withheld related to net share settlement and other	(1,758)		(900)		(858)
Share-based compensation	2,141		2,141
Share repurchases (in shares)		(29)
Share repurchases	(5,129)				(5,129)
Other comprehensive income (loss)	(460)			(460)
Net income	10,093				10,093
Balances at end of period (in shares) at Jun. 30, 2018		2,891
Balances at end of period at Jun. 30, 2018	79,382	$ 0	41,832	(687)	38,237
Balances at beginning of period (in shares) at Mar. 31, 2018		2,902
Balances at beginning of period at Mar. 31, 2018	77,620	$ 0	41,134	(294)	36,780
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock (in shares)		12
Issuance of common stock	4		4
Shares withheld related to net share settlement and other (in shares)		(5)
Shares withheld related to net share settlement and other	(927)		(492)		(435)
Share-based compensation	1,186		1,186
Share repurchases (in shares)		(18)
Share repurchases	(3,214)				(3,214)
Other comprehensive income (loss)	(393)			(393)
Net income	5,106				5,106
Balances at end of period (in shares) at Jun. 30, 2018		2,891
Balances at end of period at Jun. 30, 2018	79,382	$ 0	41,832	(687)	38,237
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)		16
Issuance of common stock	9		9
Shares withheld related to net share settlement and other (in shares)		(7)
Shares withheld related to net share settlement and other	(1,362)		(951)		(411)
Share-based compensation	2,313		2,313
Share repurchases (in shares)		(9)
Share repurchases	(1,647)				(1,647)
Other comprehensive income (loss)	277			277
Net income	5,045				5,045
Balances at end of period (in shares) at Jun. 30, 2019		2,854
Balances at end of period at Jun. 30, 2019	88,762	$ 0	44,277	(483)	44,968
Balances at beginning of period (in shares) at Mar. 31, 2019		2,856
Balances at beginning of period at Mar. 31, 2019	86,516	$ 0	43,533	(781)	43,764
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock (in shares)		8
Issuance of common stock	4		4
Shares withheld related to net share settlement and other (in shares)		(4)
Shares withheld related to net share settlement and other	(850)		(563)		(287)
Share-based compensation	1,303		1,303
Share repurchases (in shares)		(6)
Share repurchases	(1,125)				(1,125)
Other comprehensive income (loss)	298			298
Net income	2,616				2,616
Balances at end of period (in shares) at Jun. 30, 2019		2,854
Balances at end of period at Jun. 30, 2019	$ 88,762	$ 0	$ 44,277	$ (483)	$ 44,968