Fair Value Measurements (Fair Value Measurements At Reporting Date) (Details) - Fair Value, Recurring [Member] - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Assets:
Inventories carried at market	$ 9,769	$ 7,941
Cash Equivalents	448	297
Debt Securities, Available-for-sale		1
Segregated investments	1,338	1,067
Total Assets	13,201	12,414
Liabilities:
Inventory-related payables	965	509
Total Liabilities	2,930	3,127
Commodity Contracts [Member]
Assets:
Derivative Asset	1,362	2,764
Liabilities:
Derivative Liability	1,759	2,034
Foreign Exchange Contract [Member]
Assets:
Derivative Asset	238	283
Liabilities:
Derivative Liability	191	535
Interest Rate Contracts [Member]
Assets:
Derivative Asset	46	61
Liabilities:
Derivative Liability		15
Embedded Derivative Financial Instruments
Liabilities:
Derivative Liability	15	34
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Assets:
Inventories carried at market	0	0
Cash Equivalents	448	297
Debt Securities, Available-for-sale		1
Segregated investments	1,338	1,067
Total Assets	1,786	1,365
Liabilities:
Inventory-related payables	0	0
Total Liabilities	0	0
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Commodity Contracts [Member]
Assets:
Derivative Asset	0	0
Liabilities:
Derivative Liability	0	0
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Foreign Exchange Contract [Member]
Assets:
Derivative Asset	0	0
Liabilities:
Derivative Liability	0	0
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Interest Rate Contracts [Member]
Assets:
Derivative Asset	0
Liabilities:
Derivative Liability		0
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Embedded Derivative Financial Instruments
Liabilities:
Derivative Liability	0
Significant Other Observable Inputs (Level 2) [Member]
Assets:
Inventories carried at market	6,765	5,758
Debt Securities, Available-for-sale		0
Segregated investments	0
Total Assets	7,951	8,007
Liabilities:
Inventory-related payables	859	498
Total Liabilities	1,994	2,164
Significant Other Observable Inputs (Level 2) [Member] | Commodity Contracts [Member]
Assets:
Derivative Asset	902	1,905
Liabilities:
Derivative Liability	944	1,116
Significant Other Observable Inputs (Level 2) [Member] | Foreign Exchange Contract [Member]
Assets:
Derivative Asset	238	283
Liabilities:
Derivative Liability	191	535
Significant Other Observable Inputs (Level 2) [Member] | Interest Rate Contracts [Member]
Assets:
Derivative Asset	46	61
Liabilities:
Derivative Liability		15
Significant Other Observable Inputs (Level 2) [Member] | Embedded Derivative Financial Instruments
Liabilities:
Derivative Liability	0
Significant Unobservable Inputs (Level 3) [Member]
Assets:
Inventories carried at market	3,004	2,183
Debt Securities, Available-for-sale		0
Total Assets	3,464	3,042
Liabilities:
Inventory-related payables	106	11
Total Liabilities	936	963
Significant Unobservable Inputs (Level 3) [Member] | Commodity Contracts [Member]
Assets:
Derivative Asset	460	859
Liabilities:
Derivative Liability	815	918
Significant Unobservable Inputs (Level 3) [Member] | Foreign Exchange Contract [Member]
Assets:
Derivative Asset	0	0
Liabilities:
Derivative Liability	0	0
Significant Unobservable Inputs (Level 3) [Member] | Interest Rate Contracts [Member]
Assets:
Derivative Asset	0
Liabilities:
Derivative Liability		0
Significant Unobservable Inputs (Level 3) [Member] | Embedded Derivative Financial Instruments
Liabilities:
Derivative Liability	$ 15	$ 34