FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS - ASSETS AND LIABILITIES AT FAIR VALUE (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Assets:
Unrealized gain	$ 1,327	$ 1,456
Deferred purchase price receivable (Note 17)	87	79
Liabilities:
Unrealized loss	1,203	1,471
Other non-current assets
Unrealized gains (losses) on designated and undesignated derivative contracts
Unrealized gains (losses) on derivative contracts	5	0
Other non-current liabilities
Unrealized gains (losses) on designated and undesignated derivative contracts
Unrealized gains (losses) on derivative contracts	18	0
Assets and liabilities measured at fair value on a recurring basis | Level 1
Assets:
Other	18	68
Total assets	478	401
Liabilities:
Total liabilities	379	490
Assets and liabilities measured at fair value on a recurring basis | Level 1 | Undesignated derivative contracts | Foreign exchange
Assets:
Unrealized gain		9
Liabilities:
Unrealized loss		1
Assets and liabilities measured at fair value on a recurring basis | Level 1 | Undesignated derivative contracts | Commodities
Assets:
Unrealized gain	421	252
Liabilities:
Unrealized loss	356	402
Assets and liabilities measured at fair value on a recurring basis | Level 1 | Undesignated derivative contracts | Freight
Assets:
Unrealized gain	16	65
Liabilities:
Unrealized loss	14	56
Assets and liabilities measured at fair value on a recurring basis | Level 1 | Undesignated derivative contracts | Energy
Assets:
Unrealized gain	23	7
Liabilities:
Unrealized loss	9	31
Assets and liabilities measured at fair value on a recurring basis | Level 2
Assets:
Readily marketable inventories (Note 4)	3,618	3,421
Trade accounts receivable	6	6
Deferred purchase price receivable (Note 17)	87	79
Other	108	176
Total assets	4,594	4,584
Liabilities:
Trade accounts payable	478	399
Total liabilities	1,173	1,326
Assets and liabilities measured at fair value on a recurring basis | Level 2 | Designated derivative contracts | Interest rate swap
Liabilities:
Unrealized loss	18	3
Assets and liabilities measured at fair value on a recurring basis | Level 2 | Designated derivative contracts | Interest rate
Assets:
Unrealized gain	1
Assets and liabilities measured at fair value on a recurring basis | Level 2 | Designated derivative contracts | Foreign exchange
Assets:
Unrealized gain	29	30
Liabilities:
Unrealized loss		15
Assets and liabilities measured at fair value on a recurring basis | Level 2 | Undesignated derivative contracts | Interest rate
Assets:
Unrealized gain	1
Assets and liabilities measured at fair value on a recurring basis | Level 2 | Undesignated derivative contracts | Foreign exchange
Assets:
Unrealized gain	312	176
Liabilities:
Unrealized loss	233	605
Assets and liabilities measured at fair value on a recurring basis | Level 2 | Undesignated derivative contracts | Commodities
Assets:
Unrealized gain	431	696
Liabilities:
Unrealized loss	444	304
Assets and liabilities measured at fair value on a recurring basis | Level 2 | Undesignated derivative contracts | Energy
Assets:
Unrealized gain	1
Assets and liabilities measured at fair value on a recurring basis | Level 3
Assets:
Readily marketable inventories (Note 4)	237	245
Total assets	333	466
Liabilities:
Trade accounts payable	44	44
Total liabilities	191	98
Assets and liabilities measured at fair value on a recurring basis | Level 3 | Undesignated derivative contracts | Commodities
Assets:
Unrealized gain	96	220
Liabilities:
Unrealized loss	144	52
Assets and liabilities measured at fair value on a recurring basis | Level 3 | Undesignated derivative contracts | Freight
Liabilities:
Unrealized loss	1
Assets and liabilities measured at fair value on a recurring basis | Level 3 | Undesignated derivative contracts | Energy
Assets:
Unrealized gain		1
Liabilities:
Unrealized loss	2	2
Fair value | Assets and liabilities measured at fair value on a recurring basis
Assets:
Readily marketable inventories (Note 4)	3,855	3,666
Trade accounts receivable	6	6
Deferred purchase price receivable (Note 17)	87	79
Other	126	244
Total assets	5,405	5,451
Liabilities:
Trade accounts payable	522	443
Total liabilities	1,743	1,914
Trade accounts receivable related to certain delivered inventory accounted for at prices that fluctuate based on changes in commodity prices and for which no payments had been received	6	6
Trade accounts payable related to certain delivered inventory accounted for at prices that fluctuate based on changes in commodity prices and for which no payments had been made	522	443
Fair value | Assets and liabilities measured at fair value on a recurring basis | Designated derivative contracts | Interest rate swap
Liabilities:
Unrealized loss	18	3
Fair value | Assets and liabilities measured at fair value on a recurring basis | Designated derivative contracts | Interest rate
Assets:
Unrealized gain	1
Fair value | Assets and liabilities measured at fair value on a recurring basis | Designated derivative contracts | Foreign exchange
Assets:
Unrealized gain	29	30
Liabilities:
Unrealized loss		15
Fair value | Assets and liabilities measured at fair value on a recurring basis | Undesignated derivative contracts | Interest rate
Assets:
Unrealized gain	1
Fair value | Assets and liabilities measured at fair value on a recurring basis | Undesignated derivative contracts | Foreign exchange
Assets:
Unrealized gain	312	185
Liabilities:
Unrealized loss	233	606
Fair value | Assets and liabilities measured at fair value on a recurring basis | Undesignated derivative contracts | Commodities
Assets:
Unrealized gain	948	1,168
Liabilities:
Unrealized loss	944	758
Fair value | Assets and liabilities measured at fair value on a recurring basis | Undesignated derivative contracts | Freight
Assets:
Unrealized gain	16	65
Liabilities:
Unrealized loss	15	56
Fair value | Assets and liabilities measured at fair value on a recurring basis | Undesignated derivative contracts | Energy
Assets:
Unrealized gain	24	8
Liabilities:
Unrealized loss	$ 11	$ 33