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Derivative Instruments and Hedging Activities - Part 2 (Details) (USD $) In Millions, unless otherwise specified | Sep. 30, 2012 | Dec. 31, 2011
--- | --- | ---
Assets |  |
Derivative Assets Current | $ 30 | $ 49
Derivative Assets Noncurrent | 96 | 71
Total assets | 126 | 120
Liabilities |  |
Derivative Liabilities Current | 154 | 153
Total noncurrent derivative liabilities | 690 | 537
Total liabilities | 844 | 690
Level 1 |  |
Assets |  |
Derivative Assets Current | 0 | 2
Derivative Assets Noncurrent | 0 | 0
Total assets | 0 | 2
Liabilities |  |
Derivative Liabilities Current | 0 | 0
Total noncurrent derivative liabilities | 0 | 0
Total liabilities | 0 | 0
Level 2 |  |
Assets |  |
Derivative Assets Current | 20 | 40
Derivative Assets Noncurrent | 22 | 12
Total assets | 42 | 52
Liabilities |  |
Derivative Liabilities Current | 109 | 119
Total noncurrent derivative liabilities | 376 | 357
Total liabilities | 485 | 476
Level 3 |  |
Assets |  |
Derivative Assets Current | 10 | 7
Derivative Assets Noncurrent | 74 | 59
Total assets | 84 | 66
Liabilities |  |
Derivative Liabilities Current | 45 | 34
Total noncurrent derivative liabilities | 314 | 180
Total liabilities | 359 | 214
Designated as Hedging Instruments |  |
Assets |  |
Derivative Assets Current | 5 | 12
Derivative Assets Noncurrent | 16 | 4
Total assets | 21 | 16
Liabilities |  |
Derivative Liabilities Current | 124 | 116
Total noncurrent derivative liabilities | 505 | 442
Total liabilities | 629 | 558
Not Designated as Hedging Instruments |  |
Assets |  |
Derivative Assets Current | 25 | 37
Derivative Assets Noncurrent | 80 | 67
Total assets | 105 | 104
Liabilities |  |
Derivative Liabilities Current | 30 | 37
Total noncurrent derivative liabilities | 185 | 95
Total liabilities | 215 | 132
Interest Rate Derivatives |  |
Assets |  |
Derivative Assets Noncurrent | 2 | 0
Liabilities |  |
Derivative Liabilities Current | 116 | 119
Total noncurrent derivative liabilities | 523 | 440
Interest Rate Derivatives | Level 1 |  |
Assets |  |
Derivative Assets Noncurrent | 0 | 0
Liabilities |  |
Derivative Liabilities Current | 0 | 0
Total noncurrent derivative liabilities | 0 | 0
Interest Rate Derivatives | Level 2 |  |
Assets |  |
Derivative Assets Noncurrent | 2 | 0
Liabilities |  |
Derivative Liabilities Current | 79 | 97
Total noncurrent derivative liabilities | 263 | 334
Interest Rate Derivatives | Level 3 |  |
Assets |  |
Derivative Assets Noncurrent | 0 | 0
Liabilities |  |
Derivative Liabilities Current | 37 | 22
Total noncurrent derivative liabilities | 260 | 106
Interest Rate Derivatives | Designated as Hedging Instruments |  |
Assets |  |
Derivative Assets Noncurrent | 0 | 0
Liabilities |  |
Derivative Liabilities Current | 106 | 110
Total noncurrent derivative liabilities | 500 | 425
Interest Rate Derivatives | Not Designated as Hedging Instruments |  |
Assets |  |
Derivative Assets Noncurrent | 2 | 0
Liabilities |  |
Derivative Liabilities Current | 10 | 9
Total noncurrent derivative liabilities | 23 | 15
Cross Currency Swaps |  |
Assets |  |
Derivative Assets Noncurrent | 8 | 1
Liabilities |  |
Derivative Liabilities Current | 4 | 5
Total noncurrent derivative liabilities | 2 | 14
Cross Currency Swaps | Level 1 |  |
Assets |  |
Derivative Assets Noncurrent | 0 | 0
Liabilities |  |
Derivative Liabilities Current | 0 | 0
Total noncurrent derivative liabilities | 0 | 0
Cross Currency Swaps | Level 2 |  |
Assets |  |
Derivative Assets Noncurrent | 8 | 0
Liabilities |  |
Derivative Liabilities Current | 4 | 0
Total noncurrent derivative liabilities | 2 | 0
Cross Currency Swaps | Level 3 |  |
Assets |  |
Derivative Assets Noncurrent | 0 | 1
Liabilities |  |
Derivative Liabilities Current | 0 | 5
Total noncurrent derivative liabilities | 0 | 14
Cross Currency Swaps | Designated as Hedging Instruments |  |
Assets |  |
Derivative Assets Noncurrent | 8 | 1
Liabilities |  |
Derivative Liabilities Current | 4 | 5
Total noncurrent derivative liabilities | 2 | 14
Cross Currency Swaps | Not Designated as Hedging Instruments |  |
Assets |  |
Derivative Assets Noncurrent | 0 | 0
Liabilities |  |
Derivative Liabilities Current | 0 | 0
Total noncurrent derivative liabilities | 0 | 0
Foreign Currency |  |
Assets |  |
Derivative Assets Current | 11 | 28
Derivative Assets Noncurrent | 70 | 61
Liabilities |  |
Derivative Liabilities Current | 9 | 6
Total noncurrent derivative liabilities | 113 | 20
Foreign Currency | Level 1 |  |
Assets |  |
Derivative Assets Current | 0 | 0
Derivative Assets Noncurrent | 0 | 0
Liabilities |  |
Derivative Liabilities Current | 0 | 0
Total noncurrent derivative liabilities | 0 | 0
Foreign Currency | Level 2 |  |
Assets |  |
Derivative Assets Current | 6 | 24
Derivative Assets Noncurrent | 7 | 3
Liabilities |  |
Derivative Liabilities Current | 8 | 5
Total noncurrent derivative liabilities | 106 | 10
Foreign Currency | Level 3 |  |
Assets |  |
Derivative Assets Current | 5 | 4
Derivative Assets Noncurrent | 63 | 58
Liabilities |  |
Derivative Liabilities Current | 1 | 1
Total noncurrent derivative liabilities | 7 | 10
Foreign Currency | Designated as Hedging Instruments |  |
Assets |  |
Derivative Assets Current | 4 | 10
Derivative Assets Noncurrent | 7 | 3
Liabilities |  |
Derivative Liabilities Current | 7 | 1
Total noncurrent derivative liabilities | 0 | 0
Foreign Currency | Not Designated as Hedging Instruments |  |
Assets |  |
Derivative Assets Current | 7 | 18
Derivative Assets Noncurrent | 63 | 58
Liabilities |  |
Derivative Liabilities Current | 2 | 5
Total noncurrent derivative liabilities | 113 | 20
Commodity & Other |  |
Assets |  |
Derivative Assets Current | 19 | 21
Derivative Assets Noncurrent | 16 | 9
Liabilities |  |
Derivative Liabilities Current | 25 | 23
Total noncurrent derivative liabilities | 52 | 63
Commodity & Other | Level 1 |  |
Assets |  |
Derivative Assets Current | 0 | 2
Derivative Assets Noncurrent | 0 | 0
Liabilities |  |
Derivative Liabilities Current | 0 | 0
Total noncurrent derivative liabilities | 0 | 0
Commodity & Other | Level 2 |  |
Assets |  |
Derivative Assets Current | 14 | 16
Derivative Assets Noncurrent | 5 | 9
Liabilities |  |
Derivative Liabilities Current | 18 | 17
Total noncurrent derivative liabilities | 5 | 13
Commodity & Other | Level 3 |  |
Assets |  |
Derivative Assets Current | 5 | 3
Derivative Assets Noncurrent | 11 | 0
Liabilities |  |
Derivative Liabilities Current | 7 | 6
Total noncurrent derivative liabilities | 47 | 50
Commodity & Other | Designated as Hedging Instruments |  |
Assets |  |
Derivative Assets Current | 1 | 2
Derivative Assets Noncurrent | 1 | 0
Liabilities |  |
Derivative Liabilities Current | 7 | 0
Total noncurrent derivative liabilities | 3 | 3
Commodity & Other | Not Designated as Hedging Instruments |  |
Assets |  |
Derivative Assets Current | 18 | 19
Derivative Assets Noncurrent | 15 | 9
Liabilities |  |
Derivative Liabilities Current | 18 | 23
Total noncurrent derivative liabilities | $ 49 | $ 60

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