Operating Segments, Results (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sep. 30, 2016 |
Sep. 30, 2015 |
Sep. 30, 2016 |
Sep. 30, 2015 |
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| Revenues | |||||||||||||
| Affiliate | [1],[2] | $ 184 | $ 152 | $ 521 | $ 454 | ||||||||
| Third-party | [1] | 124 | 130 | 380 | 366 | ||||||||
| Total Revenues | [1] | 308 | 282 | 901 | 820 | ||||||||
| Segment Operating Income | |||||||||||||
| Operating Income (Loss) | [1] | 133 | 106 | 381 | 312 | ||||||||
| Segment Reporting, Operating Income (Loss) | 145 | 122 | 418 | 355 | |||||||||
| Unallocated general and administrative expenses | (12) | (16) | (37) | (43) | |||||||||
| Interest and financing costs, net | [1] | (49) | (37) | (138) | (112) | ||||||||
| Equity in earnings of equity method investments | [1] | 3 | 2 | 10 | 6 | ||||||||
| Other income, net | [1] | 0 | 0 | 6 | 0 | ||||||||
| Net Earnings | [1] | 87 | 71 | 259 | [3] | 206 | [3] | ||||||
| Segment Reporting Information, Additional Information | |||||||||||||
| Capital Expenditures | 42 | 93 | 125 | 237 | |||||||||
| Gathering | |||||||||||||
| Revenues | |||||||||||||
| Affiliate | 21 | 18 | 61 | 71 | |||||||||
| Third-party | 61 | 69 | 194 | 182 | |||||||||
| Total Revenues | 82 | 87 | 255 | 253 | |||||||||
| Segment Operating Income | |||||||||||||
| Operating Income (Loss) | 31 | 42 | 107 | 121 | |||||||||
| Segment Reporting Information, Additional Information | |||||||||||||
| Capital Expenditures | 21 | 72 | 67 | 177 | |||||||||
| Processing | |||||||||||||
| Revenues | |||||||||||||
| Affiliate | 23 | 26 | 74 | 71 | |||||||||
| Third-party | 46 | 45 | 134 | 134 | |||||||||
| Total Revenues | 69 | 71 | 208 | 205 | |||||||||
| Segment Operating Income | |||||||||||||
| Operating Income (Loss) | 29 | 29 | 85 | 77 | |||||||||
| Segment Reporting Information, Additional Information | |||||||||||||
| Capital Expenditures | 2 | 5 | 15 | 10 | |||||||||
| Terminalling and Transportation (b) | |||||||||||||
| Revenues | |||||||||||||
| Affiliate | 140 | 108 | 386 | 312 | |||||||||
| Third-party | 17 | 16 | 52 | 50 | |||||||||
| Total Revenues | 157 | 124 | 438 | 362 | |||||||||
| Segment Operating Income | |||||||||||||
| Operating Income (Loss) | 85 | 51 | 226 | 157 | |||||||||
| Segment Reporting Information, Additional Information | |||||||||||||
| Capital Expenditures | $ 19 | $ 16 | $ 43 | $ 50 | |||||||||
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