CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Millions	Total	Common Stock	Additional Paid In Capital	Accumulated Other Comprehensive Loss	Retained Earnings	Common Stock Held In Treasury
Beginning balance at Dec. 31, 2022	$ 24,779	$ 206	$ 6,187	$ (8)	$ 18,472	$ (78)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	3,576				3,576
Common stock dividends declared	(1,551)				(1,551)
Other Comprehensive Income (Loss)	(1)			(1)
Common Stock Issued Under Stock Plans	0		0
Restricted Stock and Restricted Stock Units, Net	0		(2)			2
Stock-Based Compensation Expenses	69		69			0
Treasury Stock Repurchased	(615)		0			(615)
Change in Treasury Stock - Stock Compensation Plans, Net	0		3			(3)
Ending balance at Jun. 30, 2023	26,257	206	6,257	(9)	20,497	(694)
Beginning balance at Mar. 31, 2023	25,447	206	6,219	(8)	19,423	(393)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	1,553				1,553
Common stock dividends declared	(479)				(479)
Other Comprehensive Income (Loss)	(1)			(1)
Restricted Stock and Restricted Stock Units, Net	0		(3)			3
Stock-Based Compensation Expenses	35		35			0
Treasury Stock Repurchased	(305)					(305)
Change in Treasury Stock - Stock Compensation Plans, Net	7		6			1
Ending balance at Jun. 30, 2023	26,257	206	6,257	(9)	20,497	(694)
Beginning balance at Dec. 31, 2023	28,090	206	6,166	(9)	22,634	(907)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	3,479				3,479
Common stock dividends declared	(1,042)				(1,042)
Other Comprehensive Income (Loss)	1			1
Common Stock Issued Under Stock Plans	0		0
Restricted Stock and Restricted Stock Units, Net	0		(16)			16
Stock-Based Compensation Expenses	90		90
Treasury Stock Repurchased	(1,453)					(1,453)
Change in Treasury Stock - Stock Compensation Plans, Net	(6)		(21)			15
Ending balance at Jun. 30, 2024	29,159	206	6,219	(8)	25,071	(2,329)
Beginning balance at Mar. 31, 2024	28,636	206	6,188	(8)	23,897	(1,647)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	1,690				1,690
Common stock dividends declared	(516)				(516)
Other Comprehensive Income (Loss)	0			0
Restricted Stock and Restricted Stock Units, Net	0		(5)			5
Stock-Based Compensation Expenses	45		45
Treasury Stock Repurchased	(697)					(697)
Change in Treasury Stock - Stock Compensation Plans, Net	1		(9)			10
Ending balance at Jun. 30, 2024	$ 29,159	$ 206	$ 6,219	$ (8)	$ 25,071	$ (2,329)