Fair Value Measurements (Fair Value Measurements At Reporting Date) (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Assets:
Derivative Asset	$ 1,323	$ 1,546
Liabilities:
Derivative Liability	1,070	1,101
Fair Value, Recurring [Member]
Assets:
Inventories carried at market	5,747	6,987
Cash Equivalents, at Carrying Value	260	209
Restricted Investments, at Fair Value	1,748	1,362
Total Assets	9,078	10,104
Liabilities:
Inventory-related payables	1,183	1,320
Total Liabilities	2,253	2,421
Fair Value, Recurring [Member] | Commodity Contracts [Member]
Assets:
Derivative Asset	1,130	1,359
Liabilities:
Derivative Liability	912	957
Fair Value, Recurring [Member] | Foreign Exchange Contracts [Member]
Assets:
Derivative Asset	188	187
Liabilities:
Derivative Liability	158	144
Fair Value, Recurring [Member] | Interest Rate Contracts [Member]
Assets:
Derivative Asset	5
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	260	209
Restricted Investments, at Fair Value	1,748	1,362
Total Assets	2,008	1,571
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] | Significant Other Observable Inputs (Level 2) [Member]
Assets:
Inventories carried at market	3,201	4,274
Cash Equivalents, at Carrying Value	0	0
Restricted Investments, at Fair Value	0	0
Total Assets	4,129	5,089
Liabilities:
Inventory-related payables	1,149	1,219
Total Liabilities	1,852	1,863
Fair Value, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Commodity Contracts [Member]
Assets:
Derivative Asset	735	628
Liabilities:
Derivative Liability	545	500
Fair Value, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Foreign Exchange Contracts [Member]
Assets:
Derivative Asset	188	187
Liabilities:
Derivative Liability	158	144
Fair Value, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Interest Rate Contracts [Member]
Assets:
Derivative Asset	5
Fair Value, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets:
Inventories carried at market	2,546	2,713
Cash Equivalents, at Carrying Value	0	0
Restricted Investments, at Fair Value	0	0
Total Assets	2,941	3,444
Liabilities:
Inventory-related payables	34	101
Total Liabilities	401	558
Fair Value, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Commodity Contracts [Member]
Assets:
Derivative Asset	395	731
Liabilities:
Derivative Liability	367	457
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