Shareholders' Equity (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended										9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024		Mar. 31, 2024		Sep. 30, 2023	Jun. 30, 2023		Mar. 31, 2023		Sep. 30, 2024	Sep. 30, 2023
Shareholders' equity activity [Roll Forward]
Beginning Balance	$ 10,046	$ 9,682		$ 9,433		$ 8,727	$ 8,445		$ 7,977		$ 9,433	$ 7,977
Net income (loss)	580	713		609		724	616		655		1,902	1,995
Other comprehensive income (loss)	3	0		0		1	1		1		3	3
Cash dividends	(150)	(151)		(151)		(144)	(144)		(145)
Stock Repurchased During Period, Value	(196)	(250)		(250)		(200)	(250)		(100)
Stock plans	(68)	(56)		(41)		(84)	(61)		(60)
Other	(1)	4		0		3	2		3
Ending Balance	$ 10,352	$ 10,046		$ 9,682		$ 9,189	$ 8,727		$ 8,445		10,352	9,189
Common Stock, Dividends, Per Share, Declared	$ 0.17	$ 0.17		$ 0.17		$ 0.16	$ 0.16		$ 0.16
Stock Repurchased During Period, Shares	6.2					5.1
Common Shares
Shareholders' equity activity [Roll Forward]
Beginning Balance	$ 2,663	$ 2,662		$ 2,663		$ 2,663	$ 2,664		$ 2,664		2,663	2,664
Net income (loss)	0	0		0		0	0		0
Other comprehensive income (loss)	0	0		0		0	0		0
Cash dividends	0	0		0		0	0		0
Stock Repurchased During Period, Value	0	0		0		0	0		0
Stock plans	(1)	(1)		(1)		0	(1)		0
Other	0	0		0		0	0		0
Ending Balance	2,662	2,663		2,662		2,663	2,663		2,664		2,662	2,663
Paid-in Capital in Excess of Par Value
Shareholders' equity activity [Roll Forward]
Beginning Balance	0	0		63		0	0		50		63	50
Net income (loss)	0	0		0		0	0		0
Other comprehensive income (loss)	0	0		0		0	0		0
Cash dividends	0	0		0		0	0		0
Stock Repurchased During Period, Value	0	0		0		0	0		0
Stock plans	(38)	0		(63)		(26)	0		(50)
Other	0	0		0		0	0		0
Ending Balance	38	0		0		26	0		0		38	26
Retained Earnings
Shareholders' equity activity [Roll Forward]
Beginning Balance	13,450	12,988		12,536		11,459	11,075		10,572		12,536	10,572
Net income (loss)	571	709		606		716	610		651
Other comprehensive income (loss)	0	0		0		0	0		0
Cash dividends	(150)	(151)		(151)		(144)	(144)		(145)
Stock Repurchased During Period, Value	0	0		0		0	0		0
Stock plans	(6)	(96)	[1]	(3)	[1]	(13)	(82)	[2]	(3)	[2]
Other	0	0		0		0	0		0
Ending Balance	13,865	13,450		12,988		12,018	11,459		11,075		13,865	12,018
Accumulated Other Comprehensive Income (Loss)
Shareholders' equity activity [Roll Forward]
Beginning Balance	(332)	(332)		(331)		(228)	(229)		(230)		(331)	(230)
Net income (loss)	0	0		0		0	0		0
Other comprehensive income (loss)	3	0		(1)		1	1		1
Cash dividends	0	0		0		0	0		0
Stock Repurchased During Period, Value	0	0		0		0	0		0
Stock plans	0	0		0		0	0		0
Other	0	0		0		0	0		0
Ending Balance	(329)	(332)		(332)		(227)	(228)		(229)		(329)	(227)
Noncontrolling Interest in Consolidated Subsidiaries
Shareholders' equity activity [Roll Forward]
Beginning Balance	46	46		42		34	30		29		42	29
Net income (loss)	9	4		3		8	6		4
Other comprehensive income (loss)	0	0		1		0	0		0
Cash dividends	0	0		0		0	0		0
Stock Repurchased During Period, Value	0	0		0		0	0		0
Stock plans	0	0		0		0	0		0
Other	(1)	4		0		3	2		3
Ending Balance	56	46		46		39	34		30		56	39
Treasury Stock, Common
Shareholders' equity activity [Roll Forward]
Beginning Balance	(5,781)	(5,682)		(5,540)		(5,201)	(5,095)		(5,108)		(5,540)	(5,108)
Net income (loss)	0	0		0		0	0		0
Other comprehensive income (loss)	0	0		0		0	0		0
Cash dividends	0	0		0		0	0		0
Stock Repurchased During Period, Value	196	250		250		200	250		100
Stock plans	(37)	(151)		(108)		(71)	(144)		(113)
Other	0	0		0		0	0		0
Ending Balance	$ (5,940)	$ (5,781)		$ (5,682)		$ (5,330)	$ (5,201)		$ (5,095)		$ (5,940)	$ (5,330)

[1] In the first, second, and third quarter of 2024, we issued common stock from treasury shares for stock options exercised, restricted stock grants, performance shares under our performance unit program, and purchases under our employee stock purchase plan. As a result, additional paid in capital was reduced to zero, which resulted in a reduction of retained earnings by $3 million, $96 million, and $6 million, respectively. Future issuances from treasury shares could similarly impact additional paid in capital and retained earnings.

[2] In the first, second, and third quarters of 2023, we issued common stock from treasury shares for stock options exercised, restricted stock grants, performance shares under our performance unit program, and purchases under our employee stock purchase plan. As a result, additional paid in capital was reduced to zero, which resulted in a reduction of retained earnings by $3 million, $82 million, and $13 million, respectively. Future issuances from treasury shares could similarly impact additional paid in capital and retained earnings.