Supplemental Cash Flow Information (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended		12 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Decrease (increase) in:
Accounts receivable - trade				$ 365	$ (1,541)
Accounts receivable - related parties				(9)	2
Inventories				(475)	520
Prepaid and other current assets				272	410
Other assets				54	103
Increase (decrease) in:
Accounts payable - trade				(134)	36
Accounts payable - related parties				(12)	(25)
Accrued product payables				(216)	2,502
Accrued interest				(233)	(230)
Other current liabilities				(220)	(696)
Other long-term liabilities				(74)	(34)
Net effect of changes in operating accounts				(682)	1,047
Cash payments for interest, net of $60 and $64 capitalized during the nine months ended September 30, 2022 and 2021, respectively				1,141	1,144
Capitalized interest	[1]	$ 22	$ 23	60	64
Cash payments for federal and state income taxes				0	$ 17
Liability for construction in progress expenditures				$ 236		$ 183

[1] We capitalize interest costs incurred on funds used to construct property, plant and equipment while the asset is in its construction phase.  The capitalized interest is recorded as part of the asset to which it relates and is amortized over the asset’s estimated useful life as a component of depreciation expense.  When capitalized interest is recorded, it reduces interest expense from what it would be otherwise.