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, 2022		$ 153	$ 0	$ 15,312	$ (153)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock repurchased		1		726
Net earnings	$ 842			842
Dividends declared				(265)
Stock compensation				(28)
Other comprehensive (loss) income, net of tax	2				2
End of period at Mar. 31, 2023	$ 15,136	152	0	15,135	(151)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared per share	$ 1.73
Beginning of period at Dec. 31, 2023	$ 14,795	150	0	14,773	(128)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock repurchased		2		1,186
Net earnings	944			944
Dividends declared				(279)
Stock compensation				(34)
Other comprehensive (loss) income, net of tax	(15)				(15)
End of period at Mar. 31, 2024	$ 14,223	$ 148	$ 0	$ 14,218	$ (143)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared per share	$ 1.87