CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Millions	Total	Class A and Class B Common Stock, Class C Capital Stock and Additional Paid-In Capital	Accumulated other comprehensive income (loss)	Retained Earnings
Beginning Balance (in shares) at Dec. 31, 2018		695,556
Beginning Balance at Dec. 31, 2018	$ 177,628	$ 45,049	$ (2,306)	$ 134,885
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common and capital stock issued (in shares)		1,912
Common and capital stock issued	39	$ 39
Stock-based compensation expense	2,788	2,788
Tax withholding related to vesting of restricted stock units and other	(1,184)	$ (1,184)
Repurchases of capital stock (in shares)		(2,686)
Repurchases of capital stock	(3,025)	$ (207)		(2,818)
Sale of interest in consolidated entities	47	$ 47
Net income	6,657			6,657
Other comprehensive income (loss)	556		556
Ending Balance (in shares) at Mar. 31, 2019		694,782
Ending Balance at Mar. 31, 2019	183,472	$ 46,532	(1,780)	138,720
Beginning Balance (in shares) at Dec. 31, 2019		688,335
Beginning Balance at Dec. 31, 2019	201,442	$ 50,552	(1,232)	152,122
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common and capital stock issued (in shares)		2,125
Common and capital stock issued	106	$ 106
Stock-based compensation expense	3,222	3,222
Tax withholding related to vesting of restricted stock units and other	(1,179)	$ (1,179)
Repurchases of capital stock (in shares)		(6,488)
Repurchases of capital stock	(8,496)	$ (606)		(7,890)
Sale of interest in consolidated entities	1,593	$ 1,593
Net income	6,836			6,836
Other comprehensive income (loss)	135		135
Ending Balance (in shares) at Mar. 31, 2020		683,972
Ending Balance at Mar. 31, 2020	$ 203,659	$ 53,688	$ (1,097)	$ 151,068