CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS’ EQUITY - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Treasury Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Common stock, beginning balance (in shares) at Dec. 31, 2021		1,208
Treasury stock, beginning balance (in shares) at Dec. 31, 2021			(429)
Beginning balance at Dec. 31, 2021	$ 17,599	$ 0	$ (5,563)	$ 11,715	$ 12,025	$ (578)
Components of comprehensive income:
Net income	395				395
Other comprehensive income (loss)	(8)					(8)
Issuance of common stock pursuant to employee stock options (in shares)		0
Issuance of common stock pursuant to employee stock options	15			15
Issuance of common stock pursuant to restricted stock units (in shares)		4
Issuance of common stock pursuant to restricted stock units	0
Restricted stock surrendered for employees' tax liability (in shares)		(2)
Restricted stock surrendered for employees’ tax liability	(131)			(131)
Settlement of liability-classified awards in restricted stock units	204			204
Share-based compensation expense related to employee stock options and restricted stock units	124			124
Dividends	(367)				(367)
Common stock, ending balance (in shares) at Mar. 31, 2022		1,210
Treasury stock, ending balance (in shares) at Mar. 31, 2022			(429)
Ending balance at Mar. 31, 2022	17,831	$ 0	$ (5,563)	11,927	12,053	(586)
Common stock, beginning balance (in shares) at Dec. 31, 2022		1,213
Treasury stock, beginning balance (in shares) at Dec. 31, 2022			(429)
Beginning balance at Dec. 31, 2022	19,243	$ 0	$ (5,563)	12,260	13,171	(625)
Components of comprehensive income:
Net income	740				740
Other comprehensive income (loss)	(4)					(4)
Issuance of common stock pursuant to employee stock options (in shares)		0
Issuance of common stock pursuant to employee stock options	14			14
Issuance of common stock pursuant to restricted stock units (in shares)		3
Issuance of common stock pursuant to restricted stock units	0
Restricted stock surrendered for employees' tax liability (in shares)		(1)
Restricted stock surrendered for employees’ tax liability	(92)			(92)
Settlement of liability-classified awards in restricted stock units	93			93
Share-based compensation expense related to employee stock options and restricted stock units	121			121
Common stock, ending balance (in shares) at Mar. 31, 2023		1,215
Treasury stock, ending balance (in shares) at Mar. 31, 2023			(429)
Ending balance at Mar. 31, 2023	$ 20,115	$ 0	$ (5,563)	$ 12,396	$ 13,911	$ (629)