Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Net operating loss carryforward	$ 96	$ 105
Credit carryforward	23	25
Operating lease liabilities	136	113
Accruals	68	63
Pension	64	90
Inventories	22	13
Other	26	43
Deferred taxes assets—total	435	452
Property, plant and equipment	(1,134)	(1,080)
Intangibles	(288)	(137)
Operating lease right-of-use asset	(134)	(112)
Turnaround costs	(27)	(17)
Consolidated partnerships	(256)	(181)
Equity method investments	(223)	(227)
Other	(17)	(18)
Deferred tax liabilities—total	(2,079)	(1,772)
Valuation allowance	(4)	(33)
Total net deferred tax liabilities	(1,648)	(1,353)
Balance sheet classifications
Noncurrent deferred tax asset	33	15
Noncurrent deferred tax liability	$ (1,681)	$ (1,368)