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Acquisitions And Divestitures (Schedule Of Revenue And Earnings For EnLink and GeoSouthern) (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 9 Months Ended
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Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013
Business Acquisition [Line Items] |  |  |  |
Total operating revenues | $ 5,336 | $ 2,714 | $ 13,571 | $ 7,773
Total operating expenses | 3,562 | 1,981 | 9,333 | 7,797
Operating income (loss) | 1,774 | 733 | 4,238 | (24)
GeoSouthern Intermediate Holdings, LLC [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Total operating revenues | 634 |  | 1,374 |
Total operating expenses | 322 |  | 708 |
Operating income (loss) | 312 |  | 666 |
EnLink [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Total operating revenues | 700 |  | 1,670 |
Total operating expenses | 692 |  | 1,654 |
Operating income (loss) | $ 8 |  | $ 16 |

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