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INDUSTRY SEGMENTS AND GEOGRAPHIC AREAS - RESULTS OF OPERATIONS (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2016 USD ($) segment | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($)
Segment Information |  |  |
Number of operating segments | segment | 3 |  |
Net sales | $ 10,090 | $ 12,480 | $ 19,312
Pretax operating profit (loss) | (1,664) | (9,476) | 1,555
Less: Net income attributable to noncontrolling interest |  |  | (14)
Income taxes | 662 | 1,330 | (1,685)
Discontinued operations, net | 428 | 317 | 760
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK | (574) | (7,829) | 616
Investment in unconsolidated entities | 1,401 | 1,267 | 1,171
Property, plant and equipment additions, net | 2,780 | 5,409 | 9,110
Depreciation, depletion and amortization | 4,268 | 4,544 | 4,261
Assets | 43,109 | 43,409 | 56,237
Total Foreign |  |  |
Segment Information |  |  |
Net sales | $ 3,800 | $ 5,001 | $ 7,369
Oil and Gas | Product Concentration | Oil |  |  |
Segment Information |  |  |
Percentage sales | 90.00% | 90.00% | 90.00%
Chemical | Product Concentration | Basic Chemicals |  |  |
Segment Information |  |  |
Percentage sales | 57.00% | 56.00% | 54.00%
Chemical | Product Concentration | Vinyls |  |  |
Segment Information |  |  |
Percentage sales | 40.00% | 40.00% | 43.00%
Chemical | Product Concentration | Other Chemicals |  |  |
Segment Information |  |  |
Percentage sales | 3.00% | 4.00% | 3.00%
Midstream and Marketing | Product Concentration | Gas Processing |  |  |
Segment Information |  |  |
Percentage sales | 92.00% | 70.00% | 49.00%
Midstream and Marketing | Product Concentration | Power |  |  |
Segment Information |  |  |
Percentage sales | 44.00% | 31.00% | 31.00%
Midstream and Marketing | Product Concentration | Marketing, Trading, Transportation and other |  |  |
Segment Information |  |  |
Percentage sales | (36.00%) | (1.00%) | 20.00%
Operating segments | Oil and Gas |  |  |
Segment Information |  |  |
Net sales | $ 6,377 | $ 8,304 | $ 13,887
Pretax operating profit (loss) | (636) | (8,060) | 428
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK | (636) | (8,060) | 428
Pre-tax gain on sale of properties | 24 |  |
Investment in unconsolidated entities |  | 4 | 11
Property, plant and equipment additions, net | 1,998 | 4,485 | 6,589
Depreciation, depletion and amortization | 3,575 | 3,886 | 3,701
Assets | 24,130 | 23,591 | 31,072
Operating segments | Oil and Gas | Plceance |  |  |
Segment Information |  |  |
Pre-tax gain on sale of properties | 121 |  |
Operating segments | Oil and Gas | South Texas oil and gas properties |  |  |
Segment Information |  |  |
Pre-tax gain on sale of properties | 59 |  |
Operating segments | Oil and Gas | Libya and Iraq operations |  |  |
Segment Information |  |  |
Impairment charges | 61 |  |
Operating segments | Oil and Gas | Total Foreign |  |  |
Segment Information |  |  |
Impairment charges |  | 5,000 | 1,100
Operating segments | Oil and Gas | Domestic oil and gas assets |  |  |
Segment Information |  |  |
Impairment charges |  | 3,500 | 4,700
Operating segments | Chemical |  |  |
Segment Information |  |  |
Net sales | 3,756 | 3,945 | 4,817
Pretax operating profit (loss) | 571 | 542 | 420
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK | 571 | 542 | 420
Pre-tax gain on sale of properties |  | 98 |
Impairment charges |  | 121 | 149
Investment in unconsolidated entities | 730 | 550 | 202
Property, plant and equipment additions, net | 353 | 271 | 325
Depreciation, depletion and amortization | 340 | 371 | 367
Assets | 4,348 | 3,982 | 3,917
Operating segments | Chemical | Occidental Tower in Dallas |  |  |
Segment Information |  |  |
Pre-tax gain on sale of properties | 57 |  |
Operating segments | Chemical | Texas and non-core specialty business |  |  |
Segment Information |  |  |
Pre-tax gain on sale of properties | 31 |  |
Operating segments | Midstream and Marketing |  |  |
Segment Information |  |  |
Net sales | 684 | 891 | 1,373
Pretax operating profit (loss) | (381) | (1,194) | 2,578
Less: Net income attributable to noncontrolling interest |  |  | (14)
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK | (381) | (1,194) | 2,564
Impairment charges |  | 1,300 |
Investment in unconsolidated entities | 666 | 708 | 948
Property, plant and equipment additions, net | 370 | 611 | 2,093
Depreciation, depletion and amortization | 313 | 249 | 160
Assets | 11,059 | 10,175 | 12,283
Other charges |  |  | 31
Operating segments | Midstream and Marketing | Oil |  |  |
Segment Information |  |  |
Loss from contract termination | 160 |  |
Operating segments | Midstream and Marketing | BridgeTex |  |  |
Segment Information |  |  |
Pre-tax gain on sale of properties |  |  | 633
Operating segments | Plains Pipeline | Midstream and Marketing |  |  |
Segment Information |  |  |
Pre-tax gain on sale of properties |  |  | 1,351
Corporate and Elimination |  |  |
Segment Information |  |  |
Net sales | (727) | (660) | (765)
Pretax operating profit (loss) | (1,218) | (764) | (1,871)
Income taxes | 662 | 1,330 | (1,685)
Discontinued operations, net | 428 | 317 | 760
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK | (128) | 883 | (2,796)
Investment in unconsolidated entities | 5 | 5 | 10
Property, plant and equipment additions, net | 59 | 42 | 103
Depreciation, depletion and amortization | 40 | 38 | 33
Assets | $ 3,572 | $ 5,661 | 8,965
Hugoton Field operations | Operating segments | Oil and Gas |  |  |
Segment Information |  |  |
Pre-tax gain on sale of properties |  |  | $ 531

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