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Operating Segments (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2011 bbl Segments InterestRateSwaps | Jun. 30, 2010 | Jun. 30, 2011 Y D bbl Segments InterestRateSwaps | Jun. 30, 2010
Operating Segments |  |  |  |
Number of operating segments | 3 |  | 3 |
Revenues: |  |  |  |
External Customers | $ 8,859 | $ 6,124 | $ 16,553 | $ 12,248
Intersegment | 181 | 157 | 358 | 310
Total revenues of reportable segments | 9,040 | 6,281 | 16,911 | 12,558
Equity earnings in unconsolidated entities | 4 | 1 | 5 | 2
Segment profit | 365 | 257 | 714 | 536
Maintenance capital | 27 | 22 | 52 | 33
Reconciliation of segment profit to net income attributable to Plains |  |  |  |
Segment profit | 365 | 257 | 714 | 536
Depreciation and amortization | (63) | (64) | (126) | (131)
Interest expense (net of capitalized interest of $6, $3, $11 and $9, respectively) | (62) | (62) | (128) | (120)
Other income/(expense), net | 2 | 2 | (20) | (1)
Income tax expense | (9) |  | (22) |
NET INCOME | 233 | 133 | 418 | 284
Less: Net income attributable to noncontrolling interests | (8) | (2) | (10) | (2)
NET INCOME ATTRIBUTABLE TO PLAINS | 225 | 131 | 408 | 282
Transportation |  |  |  |
Revenues: |  |  |  |
External Customers | 147 | 139 | 288 | 277
Intersegment | 143 | 120 | 276 | 232
Total revenues of reportable segments | 290 | 259 | 564 | 509
Equity earnings in unconsolidated entities | 4 | 1 | 5 | 2
Segment profit | 128 | 130 | 265 | 257
Maintenance capital | 17 | 15 | 35 | 22
Reconciliation of segment profit to net income attributable to Plains |  |  |  |
Segment profit | 128 | 130 | 265 | 257
Facilities |  |  |  |
Revenues: |  |  |  |
External Customers | 126 | 84 | 244 | 158
Intersegment | 38 | 37 | 81 | 77
Total revenues of reportable segments | 164 | 121 | 325 | 235
Segment profit | 86 | 70 | 164 | 129
Maintenance capital | 7 | 5 | 10 | 8
Reconciliation of segment profit to net income attributable to Plains |  |  |  |
Segment profit | 86 | 70 | 164 | 129
Supply and Logistics |  |  |  |
Revenues: |  |  |  |
External Customers | 8,586 | 5,901 | 16,021 | 11,813
Intersegment |  |  | 1 | 1
Total revenues of reportable segments | 8,586 | 5,901 | 16,022 | 11,814
Segment profit | 151 | 57 | 285 | 150
Maintenance capital | 3 | 2 | 7 | 3
Interest expense related to hedged inventory purchases | 7 | 5 | 12 | 8
Reconciliation of segment profit to net income attributable to Plains |  |  |  |
Segment profit | $ 151 | $ 57 | $ 285 | $ 150

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