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Derivative Instruments and Hedging Activities - Part 2 (Details) - USD ($) $ in Millions | Sep. 30, 2015 | Dec. 31, 2014
--- | --- | ---
Assets |  |
Derivative Assets, Gross | $ 326 | $ 280
Liabilities |  |
Derivative Liabilities, Gross | 545 | 514
Asset, Formerly Accounted for as a Derivative, to be Amortized into Earnings | 150 | 161
Liability, Formerly Accounted for as a Derivative, to be Amortized into Earnings | 170 | 180
Subject to netting arrangement [Member] |  |
Assets |  |
Derivative Assets, Gross | 38 | 53
Derivative Assets Not Offset Under Netting Arrangements | (21) | (10)
Derivative Assets Not Offset By Collateral | 0 | 0
Derivative Assets, Net | 17 | 43
Liabilities |  |
Derivative Liabilities, Gross | 475 | 507
Derivative Liabilities Not Offset Under Netting Arrangements | (21) | (10)
Derivative Liabilities Not Offset By Collateral | (32) | (26)
Derivative Liabilities, Net | 422 | 471
Current [Member] |  |
Assets |  |
Derivative Assets, Gross | 92 | 77
Liabilities |  |
Derivative Liabilities, Gross | 140 | 148
Noncurrent [Member] |  |
Assets |  |
Derivative Assets, Gross | 234 | 203
Liabilities |  |
Derivative Liabilities, Gross | 405 | 366
Designated as Hedging Instruments [Member] |  |
Assets |  |
Derivative Assets, Gross | 47 | 31
Liabilities |  |
Derivative Liabilities, Gross | 507 | 490
Not Designated as Hedging Instruments [Member] |  |
Assets |  |
Derivative Assets, Gross | 279 | 249
Liabilities |  |
Derivative Liabilities, Gross | 38 | 24
Interest Rate Contract [Member] |  |
Liabilities |  |
Derivative Liabilities, Gross | 414 | 416
Interest Rate Contract [Member] | Designated as Hedging Instruments [Member] |  |
Liabilities |  |
Derivative Liabilities, Gross | 414 | 416
Interest Rate Contract [Member] | Not Designated as Hedging Instruments [Member] |  |
Liabilities |  |
Derivative Liabilities, Gross | 0 | 0
Cross currency derivatives [Member] |  |
Liabilities |  |
Derivative Liabilities, Gross | 40 | 29
Cross currency derivatives [Member] | Designated as Hedging Instruments [Member] |  |
Liabilities |  |
Derivative Liabilities, Gross | 40 | 29
Cross currency derivatives [Member] | Not Designated as Hedging Instruments [Member] |  |
Liabilities |  |
Derivative Liabilities, Gross | 0 | 0
Foreign Exchange Contract [Member] |  |
Assets |  |
Derivative Assets, Gross | 269 | 236
Liabilities |  |
Derivative Liabilities, Gross | 61 | 52
Foreign Exchange Contract [Member] | Designated as Hedging Instruments [Member] |  |
Assets |  |
Derivative Assets, Gross | 13 | 6
Liabilities |  |
Derivative Liabilities, Gross | 39 | 38
Foreign Exchange Contract [Member] | Not Designated as Hedging Instruments [Member] |  |
Assets |  |
Derivative Assets, Gross | 256 | 230
Liabilities |  |
Derivative Liabilities, Gross | 22 | 14
Commodity Contract [Member] |  |
Assets |  |
Derivative Assets, Gross | 57 | 44
Liabilities |  |
Derivative Liabilities, Gross | 30 | 17
Commodity Contract [Member] | Designated as Hedging Instruments [Member] |  |
Assets |  |
Derivative Assets, Gross | 34 | 25
Liabilities |  |
Derivative Liabilities, Gross | 14 | 7
Commodity Contract [Member] | Not Designated as Hedging Instruments [Member] |  |
Assets |  |
Derivative Assets, Gross | 23 | 19
Liabilities |  |
Derivative Liabilities, Gross | $ 16 | $ 10

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