CONDENSED STATEMENTS OF CONSOLIDATED CHANGES IN EQUITY (Unaudited) - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in-Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Dec. 31, 2024		652,000,000
Beginning balance at Dec. 31, 2024		$ 6	$ 9,105	$ 1,572	$ (17)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuances related to benefit and investment plans			(8)
Net income	$ 297			297
Ending balance (in shares) at Mar. 31, 2025		652,000,000
Ending balance at Mar. 31, 2025	$ 10,955	$ 6	9,097	1,869	(17)
Beginning balance (in shares) at Dec. 31, 2025	652,869,575	653,000,000
Beginning balance at Dec. 31, 2025	$ 11,153	$ 6	9,130	2,043	(26)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuances related to benefit and investment plans			(20)
Net income	$ 316			316
Ending balance (in shares) at Mar. 31, 2026	654,163,245	653,000,000
Ending balance at Mar. 31, 2026	$ 11,449	$ 6	$ 9,110	$ 2,359	$ (26)