Condensed Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($) $ in Millions	Total	Common stock	Paid-in capital	Retained earnings	Accumulated other comprehensive loss
Beginning of period at Dec. 31, 2023		$ 150	$ 0	$ 14,773	$ (128)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock repurchased		4		2,076
Net earnings	$ 2,910			2,910
Dividends declared				(885)
Stock compensation				16
Other comprehensive income (loss), net of tax	(8)				(8)
End of period at Sep. 30, 2024	$ 14,748	146	0	14,738	(136)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared per share	$ 5.99
Beginning of period at Jun. 30, 2024		146	0	14,301	(146)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock repurchased		0		313
Net earnings	$ 1,026			1,026
Dividends declared				(302)
Stock compensation				26
Other comprehensive income (loss), net of tax	10				10
End of period at Sep. 30, 2024	$ 14,748	146	0	14,738	(136)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared per share	$ 2.06
Beginning of period at Dec. 31, 2024	$ 15,290	145	0	15,297	(152)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock repurchased		2		1,150
Net earnings	2,755			2,755
Dividends declared				(963)
Stock compensation				29
Other comprehensive income (loss), net of tax	29				29
End of period at Sep. 30, 2025	$ 15,988	143	0	15,968	(123)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared per share	$ 6.68
Beginning of period at Jun. 30, 2025		143	0	15,452	(124)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock repurchased		0		278
Net earnings	$ 1,100			1,100
Dividends declared				(332)
Stock compensation				26
Other comprehensive income (loss), net of tax	1				1
End of period at Sep. 30, 2025	$ 15,988	$ 143	$ 0	$ 15,968	$ (123)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared per share	$ 2.31