Fair Value Measurements (Fair Value Measurements At Reporting Date) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Assets:
Derivative Asset	$ 2,050	$ 1,704
Liabilities:
Derivative Liability	1,371	1,543
Fair Value, Recurring [Member]
Assets:
Inventories carried at market	6,044	9,041
Cash Equivalents, at Carrying Value	366	405
Restricted Investments, at Fair Value	1,969	1,453
Total Assets	10,429	12,603
Liabilities:
Inventory-related payables	1,157	1,270
Total Liabilities	2,528	2,819
Fair Value, Recurring [Member] | Commodity Contracts [Member]
Assets:
Derivative Asset	1,763	1,337
Liabilities:
Derivative Liability	1,252	1,268
Fair Value, Recurring [Member] | Foreign Exchange Contracts [Member]
Assets:
Derivative Asset	287	258
Liabilities:
Derivative Liability	119	275
Fair Value, Recurring [Member] | Interest Rate Contracts [Member]
Assets:
Derivative Asset		109
Fair Value, Recurring [Member] | Embedded Derivative Financial Instruments [Member]
Liabilities:
Derivative Liability		6
Fair Value, Recurring [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Assets:
Inventories carried at market	0	0
Cash Equivalents, at Carrying Value	366	405
Restricted Investments, at Fair Value	1,969	1,453
Total Assets	2,335	1,858
Liabilities:
Inventory-related payables	0	0
Total Liabilities	0	0
Fair Value, Recurring [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Commodity Contracts [Member]
Assets:
Derivative Asset	0	0
Liabilities:
Derivative Liability	0	0
Fair Value, Recurring [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Foreign Exchange Contracts [Member]
Assets:
Derivative Asset	0	0
Liabilities:
Derivative Liability	0	0
Fair Value, Recurring [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Interest Rate Contracts [Member]
Assets:
Derivative Asset		0
Fair Value, Recurring [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Embedded Derivative Financial Instruments [Member]
Liabilities:
Derivative Liability		0
Fair Value, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Assets:
Inventories carried at market	3,172	6,281
Cash Equivalents, at Carrying Value	0	0
Restricted Investments, at Fair Value	0	0
Total Assets	4,332	7,444
Liabilities:
Inventory-related payables	1,070	1,181
Total Liabilities	1,892	2,121
Fair Value, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Commodity Contracts [Member]
Assets:
Derivative Asset	873	796
Liabilities:
Derivative Liability	703	665
Fair Value, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Foreign Exchange Contracts [Member]
Assets:
Derivative Asset	287	258
Liabilities:
Derivative Liability	119	275
Fair Value, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Interest Rate Contracts [Member]
Assets:
Derivative Asset		109
Fair Value, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Embedded Derivative Financial Instruments [Member]
Liabilities:
Derivative Liability		0
Fair Value, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets:
Inventories carried at market	2,872	2,760
Cash Equivalents, at Carrying Value	0	0
Restricted Investments, at Fair Value	0	0
Total Assets	3,762	3,301
Liabilities:
Inventory-related payables	87	89
Total Liabilities	636	698
Fair Value, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Commodity Contracts [Member]
Assets:
Derivative Asset	890	541
Liabilities:
Derivative Liability	549	603
Fair Value, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Foreign Exchange Contracts [Member]
Assets:
Derivative Asset	0	0
Liabilities:
Derivative Liability	$ 0	0
Fair Value, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Interest Rate Contracts [Member]
Assets:
Derivative Asset		0
Fair Value, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Embedded Derivative Financial Instruments [Member]
Liabilities:
Derivative Liability		$ 6