v2.4.0.8

Fair Value Measurements (Tables) | 6 Months Ended
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Jun. 30, 2014
Fair Value Disclosures [Abstract] |
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] | The following table provides information for financial assets (liabilities) measured at fair value on a recurring basis as of June 30, 2014 and December 31, 2013:
As of June 30, 2014 |  | Quoted Prices in Active Markets (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3) |  | Total Fair Value
|  |  |  | ($ in millions) |  |
Derivative Assets (Liabilities): |  |  |  |  |  |  |  |
Commodity assets |  | $ | — |  |  | $ | 38 |  |  | $ | 22 |  |  | $ | 60 |
Commodity liabilities |  | — |  |  | (244 | ) |  | (572 | ) |  | (816 | )
Interest rate liabilities |  | — |  |  | (48 | ) |  | — |  |  | (48 | )
Foreign currency assets |  | — |  |  | 6 |  |  | — |  |  | 6 |
Total derivatives |  | $ | — |  |  | $ | (248 | ) |  | $ | (550 | ) |  | $ | (798 | )
As of December 31, 2013 |  | Quoted Prices in Active Markets (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3) |  | Total Fair Value
|  |  |  | ($ in millions) |  |
Derivative Assets (Liabilities): |  |  |  |  |  |  |  |
Commodity assets |  | $ | — |  |  | $ | 25 |  |  | $ | 15 |  |  | $ | 40 |
Commodity liabilities |  | — |  |  | (100 | ) |  | (493 | ) |  | (593 | )
Interest rate liabilities |  | — |  |  | (98 | ) |  | — |  |  | (98 | )
Foreign currency assets |  | — |  |  | 2 |  |  | — |  |  | 2 |
Total derivatives |  | $ | — |  |  | $ | (171 | ) |  | $ | (478 | ) |  | $ | (649 | )
The following table provides fair value measurement information for the above-noted financial assets (liabilities) measured at fair value on a recurring basis as of June 30, 2014 and December 31, 2013:
As of June 30, 2014 |  | Quoted Prices in Active Markets (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3) |  | Total Fair Value
|  |  |  | ($ in millions) |  |
Financial Assets (Liabilities): |  |  |  |  |  |  |  |
Other current assets |  | $ | 57 |  |  | $ | — |  |  | $ | — |  |  | $ | 57 |
Other current liabilities |  | (58 | ) |  | — |  |  | — |  |  | (58 | )
Total |  | $ | (1 | ) |  | $ | — |  |  | $ | — |  |  | $ | (1 | )
As of December 31, 2013 |  | Quoted Prices in Active Markets (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3) |  | Total Fair Value
|  |  |  | ($ in millions) |  |
Financial Assets (Liabilities): |  |  |  |  |  |  |  |
Other current assets |  | $ | 80 |  |  | $ | — |  |  | $ | — |  |  | $ | 80 |
Other current liabilities |  | (82 | ) |  | — |  |  | — |  |  | (82 | )
Total |  | $ | (2 | ) |  | $ | — |  |  | $ | — |  |  | $ | (2 | )

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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19190-110258 + Details
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