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Derivative Instruments and Hedging Activities - Part 2 (Details) - USD ($) $ in Millions | Jun. 30, 2016 | Dec. 31, 2015
--- | --- | ---
Assets |  |  |
Derivative Assets, Gross |  | $ 384 | $ 375
Liabilities |  |  |
Derivative Liabilities, Gross |  | 688 | 490
Derivative, net liability position, present value subject to collateralization | [1] | 68 | 58
Collateral Already Posted, Aggregate Fair Value | [1] | 34 | 38
Other Current Assets [Member] |  |  |
Assets |  |  |
Derivative Assets, Gross |  | 104 | 86
Other Current Liabilities [Member] |  |  |
Liabilities |  |  |
Derivative Liabilities, Gross |  | 172 | 144
Other Noncurrent Assets [Member] |  |  |
Assets |  |  |
Derivative Assets, Gross |  | 280 | 289
Other Noncurrent Liabilities [Member] |  |  |
Liabilities |  |  |
Derivative Liabilities, Gross |  | 516 | 346
Designated as Hedging Instruments [Member] |  |  |
Assets |  |  |
Derivative Assets, Gross |  | 38 | 38
Liabilities |  |  |
Derivative Liabilities, Gross |  | 625 | 448
Not Designated as Hedging Instruments [Member] |  |  |
Assets |  |  |
Derivative Assets, Gross |  | 346 | 337
Liabilities |  |  |
Derivative Liabilities, Gross |  | 63 | 42
Interest Rate Contract [Member] |  |  |
Liabilities |  |  |
Derivative Liabilities, Gross |  | 525 | 358
Interest Rate Contract [Member] | Designated as Hedging Instruments [Member] |  |  |
Liabilities |  |  |
Derivative Liabilities, Gross |  | 524 | 358
Interest Rate Contract [Member] | Not Designated as Hedging Instruments [Member] |  |  |
Liabilities |  |  |
Derivative Liabilities, Gross |  | 1 | 0
Cross currency derivatives [Member] |  |  |
Assets |  |  |
Derivative Assets, Gross |  | 1 | 0
Liabilities |  |  |
Derivative Liabilities, Gross |  | 39 | 43
Cross currency derivatives [Member] | Designated as Hedging Instruments [Member] |  |  |
Assets |  |  |
Derivative Assets, Gross |  | 1 | 0
Liabilities |  |  |
Derivative Liabilities, Gross |  | 39 | 43
Cross currency derivatives [Member] | Not Designated as Hedging Instruments [Member] |  |  |
Assets |  |  |
Derivative Assets, Gross |  | 0 | 0
Liabilities |  |  |
Derivative Liabilities, Gross |  | 0 | 0
Foreign Exchange Contract [Member] |  |  |
Assets |  |  |
Derivative Assets, Gross |  | 317 | 327
Liabilities |  |  |
Derivative Liabilities, Gross |  | 66 | 56
Foreign Exchange Contract [Member] | Designated as Hedging Instruments [Member] |  |  |
Assets |  |  |
Derivative Assets, Gross |  | 10 | 8
Liabilities |  |  |
Derivative Liabilities, Gross |  | 36 | 35
Foreign Exchange Contract [Member] | Not Designated as Hedging Instruments [Member] |  |  |
Assets |  |  |
Derivative Assets, Gross |  | 307 | 319
Liabilities |  |  |
Derivative Liabilities, Gross |  | 30 | 21
Commodity Contract [Member] |  |  |
Assets |  |  |
Derivative Assets, Gross |  | 66 | 48
Liabilities |  |  |
Derivative Liabilities, Gross |  | 58 | 33
Commodity Contract [Member] | Designated as Hedging Instruments [Member] |  |  |
Assets |  |  |
Derivative Assets, Gross |  | 27 | 30
Liabilities |  |  |
Derivative Liabilities, Gross |  | 26 | 12
Commodity Contract [Member] | Not Designated as Hedging Instruments [Member] |  |  |
Assets |  |  |
Derivative Assets, Gross |  | 39 | 18
Liabilities |  |  |
Derivative Liabilities, Gross |  | $ 32 | $ 21
[1] | (1) Based on the credit rating of certain subsidiaries

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