Income Taxes (Deferred Income Tax Assets and Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Deferred tax assets:
Allowance for doubtful accounts	$ 20	$ 20
Inventories	107	114
Environmental and regulatory compliance	36	38
Other accruals and prepayments	908	631
Stock-based compensation expense	132	122
Operating lease liabilities	285	255
R&D expense	679	584
Tax credit and loss carryforwards	678	760
Valuation allowances	(315)	(232)
Total deferred tax asset	2,530	2,292
Deferred tax liabilities:
Pension and postretirement benefits	(58)	(9)
Property, plant and equipment	(100)	(136)
Insurance, including self-insurance	(304)	(400)
Operating lease ROU assets	(265)	(238)
Goodwill and other intangibles	(3,269)	(3,300)
Total deferred tax liability	(3,996)	(4,083)
Net deferred tax liability	$ (1,466)	$ (1,791)