The following table presents the fair value associated with our derivative financial instruments as of March 31, 2015 and December 31, 2014. All of our derivative instruments are subject to master netting arrangements which provide for the unconditional right of offset for all derivative assets and liabilities with a given counterparty in the event of default. We present assets and liabilities related to these instruments in our balance sheets as either current or non-current assets or liabilities based on their anticipated settlement date, net of the impact of master netting agreements. On derivative contracts recorded as assets in the table below, we are exposed to the risk that our counterparties may not perform. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Level 2 | | Derivative Assets | | Derivative Liabilities | | Gross Fair Value | | | | Balance Sheet Location | | Gross Fair Value | | | | Balance Sheet Location | | | Impact of Netting | | Current | | Non- current | | | Impact of Netting | | Current | | Non- current | | (in millions) | | (in millions) | March 31, 2015 | |
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| Derivative instruments | $ | 1,069 |
| | $ | (34 | ) | | $ | 746 |
| | $ | 289 |
| | $ | (35 | ) | | $ | 34 |
| | $ | (1 | ) | | $ | — |
| | | | | | | | | | | | | | | | | December 31, 2014 | |
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| Derivative instruments | $ | 1,093 |
| | $ | (44 | ) | | $ | 752 |
| | $ | 297 |
| | $ | (45 | ) | | $ | 44 |
| | $ | (1 | ) | | $ | — |
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