Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock
Total stockholder's equity at beginning of period at Dec. 31, 2023		$ 683	$ 2,221	$ 9,755	$ (2,672)	$ (94)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation			(20)			19
Dividends to common stockholders ($2.46 and $2.44 per share)				(668)
Net income	$ 338			338
Other comprehensive income	100				100
Purchase of treasury stock						0
Total stockholder's equity at end of period at Mar. 31, 2024	9,662	683	2,201	9,425	(2,572)	(75)
Total stockholder's equity at beginning of period at Dec. 31, 2024	10,513	683	2,229	9,686	(1,991)	(94)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation			(25)			18
Dividends to common stockholders ($2.46 and $2.44 per share)				(673)
Net income	274			274
Other comprehensive income	206				206
Purchase of treasury stock	(34)					(34)
Total stockholder's equity at end of period at Mar. 31, 2025	$ 10,279	$ 683	$ 2,204	$ 9,287	$ (1,785)	$ (110)