Income Taxes (Deferred Income Tax Assets and Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets:
Allowance for doubtful accounts	$ 17	$ 19
Inventories	118	93
Pension and postretirement benefits	17	105
Environmental and regulatory compliance	39	38
Other accruals and prepayments	406	299
Stock-based compensation expense	105	76
Operating lease liabilities	238	252
Research and development expense	243	49
Tax credit and loss carryforwards	479	544
Valuation allowances	(236)	(242)
Total deferred tax asset	1,426	1,233
Deferred tax liabilities:
Property, plant and equipment	(92)	(79)
Insurance, including self-insurance	(803)	(520)
Operating lease right-of-use assets	(219)	(235)
Goodwill and other intangibles	(3,270)	(3,962)
Total deferred tax liability	(4,384)	(4,796)
Net deferred tax liability	$ (2,958)	$ (3,563)