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Impairments of Fixed Assets and Other - Table (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Jun. 30, 2014
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Jun. 30, 2013
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Jun. 30, 2014
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Jun. 30, 2013
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| Impaired Long-Lived Assets Held and Used [Line Items] | ||||
| Impairments of fixed assets and other | $ 40 | $ 231 | $ 60 | $ 258 |
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Gathering and Processing Equipment [Member]
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| Impaired Long-Lived Assets Held and Used [Line Items] | ||||
| Impairments of fixed assets and other | 10 | 0 | 10 | 0 |
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Exploration and Production Equipment [Member]
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| Impaired Long-Lived Assets Held and Used [Line Items] | ||||
| Impairments of fixed assets and other | 3 | 4 | 23 | 4 |
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Land and Building [Member]
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| Impaired Long-Lived Assets Held and Used [Line Items] | ||||
| Impairments of fixed assets and other | 5 | 213 | 5 | 239 |
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Other Assets [Member]
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| Impaired Long-Lived Assets Held and Used [Line Items] | ||||
| Impairments of fixed assets and other | $ 22 | $ 14 | $ 22 | $ 15 |