Consolidated Statements of Stockholders' Equity - 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, 2022		$ 683	$ 2,220	$ 9,336	$ (3,598)	$ (93)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation			1			23
Dividends to common stockholders ($3.84, $3.76, and $2.88 per share)				(786)
Net income	$ 1,205			1,205
Other comprehensive income	926				926
Purchase of treasury stock						(24)
Total stockholder's equity at end of period at Dec. 31, 2023	9,893	683	2,221	9,755	(2,672)	(94)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation			8			20
Dividends to common stockholders ($3.84, $3.76, and $2.88 per share)				(1,028)
Net income	959			959
Other comprehensive income	681				681
Purchase of treasury stock	(20)					(20)
Total stockholder's equity at end 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			0			20
Dividends to common stockholders ($3.84, $3.76, and $2.88 per share)				(1,049)
Net income	1,278			1,278
Other comprehensive income	893				893
Purchase of treasury stock	(34)					(34)
Total stockholder's equity at end of period at Dec. 31, 2025	$ 11,621	$ 683	$ 2,229	$ 9,915	$ (1,098)	$ (108)