Properties, Plants and Equipment (Properties, Plants and Equipment with Associated Accumulated Depreciation and Amortization) (Detail) (USD $)
In Millions, unless otherwise specified |
Sep. 30, 2012
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Dec. 31, 2011
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Property, Plant and Equipment [Line Items] | |||||
Gross PP&E | $ 23,567 | $ 23,156 | [1] | ||
Accum. D&A | 8,256 | 8,385 | [1] | ||
Net PP&E | 15,311 | 14,771 | [1] | ||
R&M [Member]
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Property, Plant and Equipment [Line Items] | |||||
Gross PP&E | 22,627 | 23,078 | [1] | ||
Accum. D&A | 7,816 | 8,327 | [1] | ||
Net PP&E | 14,811 | 14,751 | [1] | ||
R&M [Member] | Refining [Member]
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Property, Plant and Equipment [Line Items] | |||||
Gross PP&E | 18,751 | 19,333 | [1] | ||
Accum. D&A | 5,988 | 6,630 | [1] | ||
Net PP&E | 12,763 | 12,703 | [1] | ||
R&M [Member] | Transportation [Member]
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Property, Plant and Equipment [Line Items] | |||||
Gross PP&E | 2,458 | 2,359 | [1] | ||
Accum. D&A | 1,015 | 931 | [1] | ||
Net PP&E | 1,443 | 1,428 | [1] | ||
R&M [Member] | Marketing And Other [Member]
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Property, Plant and Equipment [Line Items] | |||||
Gross PP&E | 1,418 | 1,386 | [1] | ||
Accum. D&A | 813 | 766 | [1] | ||
Net PP&E | 605 | 620 | [1] | ||
Midstream [Member]
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Property, Plant and Equipment [Line Items] | |||||
Gross PP&E | 63 | 64 | [1] | ||
Accum. D&A | 49 | 51 | [1] | ||
Net PP&E | 14 | 13 | [1] | ||
Corporate And Other [Member]
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Property, Plant and Equipment [Line Items] | |||||
Gross PP&E | 877 | 14 | [1] | ||
Accum. D&A | 391 | 7 | [1] | ||
Net PP&E | $ 486 | $ 7 | [1] | ||
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