Condensed Consolidated Statements of Changes in Common Shareholders' Equity (Unaudited) - USD ($) $ in Millions		Common Stock [Member]	Treasury Stock, Common [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	[1]	Total
Balance (in shares) at Dec. 31, 2022		1,112,600,000	(500,200,000)
Balance at Dec. 31, 2022		$ 2,782	$ (54,004)	$ 5,080	$ 58,887	$ (582)		$ 12,163
Net income		0	0	0	4,727	0		4,727
Other comprehensive income/(loss)		$ 0	$ 0	0	0	85		85	[2]
Conversion, stock option exercises, forfeitures, ESPP, and other [b] (in shares)	[3]	300,000	400,000
Conversion, stock option exercises, forfeitures, ESPP, and other [b]	[3]	$ 0	$ 34	86	0	0		$ 120
Share repurchase programs (Note 16) (in shares)			(3,500,000)					(3,515,284)
Share repurchase programs (Note 16)		0	$ (712)	0	0	0		$ (712)
Dividends declared		$ 0	$ 0	0	(2,379)	0		(2,379)
Balance (in shares) at Sep. 30, 2023		1,112,900,000	(503,300,000)
Balance at Sep. 30, 2023		$ 2,782	$ (54,682)	5,166	61,235	(497)		14,004
Balance (in shares) at Jun. 30, 2023		1,112,900,000	(503,500,000)
Balance at Jun. 30, 2023		$ 2,782	$ (54,699)	5,128	60,500	(517)		13,194
Net income		0	0	0	1,528	0		1,528
Other comprehensive income/(loss)		$ 0	$ 0	0	0	20		20	[4]
Conversion, stock option exercises, forfeitures, ESPP, and other [b] (in shares)	[3]	0	200,000
Conversion, stock option exercises, forfeitures, ESPP, and other [b]	[3]	$ 0	$ 17	38	0	0		$ 55
Share repurchase programs (Note 16) (in shares)			0					0
Share repurchase programs (Note 16)		0	$ 0	0	0	0		$ 0
Dividends declared		$ 0	$ 0	0	(793)	0		(793)
Balance (in shares) at Sep. 30, 2023		1,112,900,000	(503,300,000)
Balance at Sep. 30, 2023		$ 2,782	$ (54,682)	5,166	61,235	(497)		14,004
Balance (in shares) at Dec. 31, 2023		1,112,900,000	(503,200,000)
Balance at Dec. 31, 2023		$ 2,782	$ (54,666)	5,193	62,093	(614)		14,788
Net income		0	0	0	4,985	0		4,985
Other comprehensive income/(loss)		$ 0	$ 0	0	0	(78)		(78)	[2]
Conversion, stock option exercises, forfeitures, ESPP, and other [b] (in shares)	[3]	100,000	600,000
Conversion, stock option exercises, forfeitures, ESPP, and other [b]	[3]	$ 1	$ 34	104	0	0		$ 139
Share repurchase programs (Note 16) (in shares)			(3,500,000)					(3,498,381)
Share repurchase programs (Note 16)		0	$ (849)	0	0	0		$ (849)
Dividends declared		$ 0	$ 0	0	(2,401)	0		(2,401)
Balance (in shares) at Sep. 30, 2024		1,113,000,000	(506,100,000)
Balance at Sep. 30, 2024		$ 2,783	$ (55,481)	5,297	64,677	(692)		16,584
Balance (in shares) at Jun. 30, 2024		1,113,000,000	(503,300,000)
Balance at Jun. 30, 2024		$ 2,783	$ (54,757)	5,249	63,820	(606)		16,489
Net income		0	0	0	1,671	0		1,671
Other comprehensive income/(loss)		$ 0	$ 0	0	0	(86)		(86)	[4]
Conversion, stock option exercises, forfeitures, ESPP, and other [b] (in shares)	[3]	0	200,000
Conversion, stock option exercises, forfeitures, ESPP, and other [b]	[3]	$ 0	$ 14	48	0	0		$ 62
Share repurchase programs (Note 16) (in shares)			(3,000,000)					(3,006,061)
Share repurchase programs (Note 16)		0	$ (738)	0	0	0		$ (738)
Dividends declared		$ 0	$ 0	0	(814)	0		(814)
Balance (in shares) at Sep. 30, 2024		1,113,000,000	(506,100,000)
Balance at Sep. 30, 2024		$ 2,783	$ (55,481)	$ 5,297	$ 64,677	$ (692)		$ 16,584

[1] AOCI = accumulated other comprehensive income/loss (Note 9)

[2] Net of deferred taxes of $1 million and ($4) million during the nine months ended September 30, 2024 and 2023, respectively

[3] ESPP = employee stock purchase plan

[4] Net of deferred taxes of $1 million and ($1) million during the three months ended September 30, 2024 and 2023, respectively.