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Discontinued Operations (Details Textual) (USD $)
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3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Jun. 30, 2013
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Jun. 30, 2012
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Jun. 30, 2013
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Jun. 30, 2012
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Dec. 31, 2012
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Jun. 30, 2012
Phillips 66 [Member]
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Jun. 30, 2012
Phillips 66 [Member]
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Jun. 30, 2013
Kashagan [Member]
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Dec. 31, 2012
Kashagan [Member]
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Dec. 31, 2012
Algeria [Member]
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Jun. 30, 2013
Algeria [Member]
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Dec. 31, 2012
Nigeria [Member]
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Jun. 30, 2013
Nigeria [Member]
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Jun. 30, 2013
Kashagan, Algeria and Nigeria [Member]
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Dec. 31, 2012
Kashagan, Algeria and Nigeria [Member]
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| Separation of Downstream Business (Textual) [Abstract] | |||||||||||||||
| Restricted cash | $ 748,000,000 | ||||||||||||||
| Separation costs incurred | 26,000,000 | 70,000,000 | |||||||||||||
| Special cash distribution from Phillips 66 | 7,818,000,000 | ||||||||||||||
| Sales and other operating revenues | 13,350,000,000 | 13,664,000,000 | 27,516,000,000 | 28,257,000,000 | 919,000,000 | 4,973,000,000 | |||||||||
| Purchased commodities | 5,521,000,000 | 5,721,000,000 | 11,355,000,000 | 11,799,000,000 | 7,000,000 | 166,000,000 | |||||||||
| Other Discontinued Operations [Abstract] | |||||||||||||||
| Percent interest | 8.40% | ||||||||||||||
| Expected proceeds from sale of asset | 5,400,000,000 | 1,750,000,000 | 1,790,000,000 | ||||||||||||
| Impairment of asset held for sale | 43,000,000 | 606,000,000 | |||||||||||||
| Carrying Value | 5,203,000,000 | 674,000,000 | 378,000,000 | ||||||||||||
| Deposit | 175,000,000 | 435,000,000 | |||||||||||||
| Noncurrent assets reclassified to current | 7,254,000,000 | ||||||||||||||
| Loans and advances-related parties | 16,000,000 | 29,000,000 | |||||||||||||
| Deferred income taxes | 853,000,000 | 759,000,000 | |||||||||||||
| Asset retirement obligations and accrued environmental costs | $ 135,000,000 | $ 131,000,000 | |||||||||||||