|**SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Significant Accounting Policies (Tables)** | 12 Months Ended                                                                                                                                                                                                                           
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|**Accounting Policies [Abstract]**                                                      |                                                                                                                                                                                                                                           
|Property, Plant and Equipment, Estimated Useful Lives [Table Text Block]                | Other Property and Equipment.The following table presents the estimated useful lives of our other property and equipment:Pipelines and related facilities10 - 17 yearsTransportation and other equipment3 - 20 yearsBuildings30 - 40 years
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|Pipelines and related facilities                                                        | 10 - 17 years                                                                                                                                                                                                                             
|Transportation and other equipment                                                      | 3 - 20 years                                                                                                                                                                                                                              
|Buildings                                                                               | 30 - 40 years                                                                                                                                                                                                                             

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