CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS’ EQUITY - USD ($) shares in Millions, $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Treasury Stock	Additional Paid-In Capital	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Income (Loss)
Common stock, beginning balance (in shares) at Dec. 31, 2019			1,197
Treasury stock, beginning balance (in shares) at Dec. 31, 2019				(429)
Beginning balance at Dec. 31, 2019	$ 12,805	$ (3)	$ 0	$ (5,563)	$ 11,174	$ 7,813	$ (3)	$ (619)
Components of comprehensive income:
Net income	2,197					2,197
Other comprehensive income (loss)	(3)							(3)
Issuance of common stock pursuant to employee stock options (in shares)			5
Issuance of common stock pursuant to employee stock options	171				171
Issuance of common stock pursuant to restricted stock units (in shares)			1
Issuance of common stock pursuant to restricted stock units	0
Restricted stock surrendered for employees’ tax liability	(40)				(40)
Share-based compensation expense related to employee stock options and restricted stock units	226				226
Dividends	(316)					(316)
Common stock, ending balance (in shares) at Dec. 31, 2020			1,203
Treasury stock, ending balance (in shares) at Dec. 31, 2020				(429)
Ending balance at Dec. 31, 2020	15,037		$ 0	$ (5,563)	11,531	9,691		(622)
Components of comprehensive income:
Net income	2,699					2,699
Other comprehensive income (loss)	44							44
Issuance of common stock pursuant to employee stock options (in shares)			2
Issuance of common stock pursuant to employee stock options	90				90
Issuance of common stock pursuant to restricted stock units (in shares)			6
Issuance of common stock pursuant to restricted stock units	0
Restricted stock surrendered for employees' tax liability (in shares)			(3)
Restricted stock surrendered for employees’ tax liability	(245)				(245)
Share-based compensation expense related to employee stock options and restricted stock units	339				339
Dividends	(365)					(365)
Common stock, ending balance (in shares) at Dec. 31, 2021			1,208
Treasury stock, ending balance (in shares) at Dec. 31, 2021				(429)
Ending balance at Dec. 31, 2021	17,599		$ 0	$ (5,563)	11,715	12,025		(578)
Components of comprehensive income:
Net income	1,513					1,513
Other comprehensive income (loss)	(47)							(47)
Issuance of common stock pursuant to employee stock options (in shares)			1
Issuance of common stock pursuant to employee stock options	47				47
Issuance of common stock pursuant to restricted stock units (in shares)			7
Issuance of common stock pursuant to restricted stock units	0
Restricted stock surrendered for employees' tax liability (in shares)			(3)
Restricted stock surrendered for employees’ tax liability	(227)				(227)
Settlement of liability-classified awards in restricted stock units	204				204
Share-based compensation expense related to employee stock options and restricted stock units	521				521
Dividends	(367)					(367)
Common stock, ending balance (in shares) at Dec. 31, 2022			1,213
Treasury stock, ending balance (in shares) at Dec. 31, 2022				(429)
Ending balance at Dec. 31, 2022	$ 19,243		$ 0	$ (5,563)	$ 12,260	$ 13,171		$ (625)