Income Taxes (Deferred Income Tax Assets (Liabilities)) (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Income Tax Disclosure [Abstract]
Pension and other postretirement benefits	$ 162	$ 169
Tax credits and loss carryforwards	712	623
Capitalized research costs	204	272
Lease liabilities	114	112
Other	423	364
Deferred tax assets	1,615	1,540
Valuation allowances	(451)	(295)
Total deferred tax assets	1,164	1,245
Property, plant and equipment	851	854
Investments in subsidiaries	133	113
Goodwill	69	64
Lease assets	109	105
Other	186	203
Total deferred tax liabilities	1,348	1,339
Net deferred tax assets (liabilities)	$ (184)	$ (94)