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Debt - Long-Term Debt (Detail) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2011
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Dec. 31, 2010
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|---|---|---|---|---|---|---|
| Debt Instrument [Line Items] | ||||||
| Debt at face value | $ 22,143 | $ 23,096 | ||||
| Capitalized leases | 31 | 39 | ||||
| Net unamortized premiums and discounts | 449 | 457 | ||||
| Total debt | 22,623 | 23,592 | ||||
| Short-term debt | (1,013) | [1] | (936) | [1] | ||
| Long-term debt | 21,610 | [1] | 22,656 | [1] | ||
|
9.375% Notes due 2011 [Member]
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 328 | |||||
|
9.125% Debentures due 2021 [Member]
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 150 | 150 | ||||
|
8.20% Debentures due 2025 [Member]
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 150 | 150 | ||||
|
8.125% Notes due 2030 [Member]
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 600 | 600 | ||||
|
7.9% Debentures due 2047 [Member]
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 100 | 100 | ||||
|
7.8% Debentures due 2027 [Member]
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 300 | 300 | ||||
|
7.68% Notes due 2012 [Member]
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 7 | 15 | ||||
|
7.65% Debentures due 2023 [Member]
|
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 88 | 88 | ||||
|
7.625% Debentures due 2013 [Member]
|
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 100 | 100 | ||||
|
7.40% Notes due 2031 [Member]
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 500 | 500 | ||||
|
7.375% Debentures due 2029 [Member]
|
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 92 | 92 | ||||
|
7.25% Notes due 2031 [Member]
|
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 500 | 500 | ||||
|
7.20% Notes due 2031 [Member]
|
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 575 | 575 | ||||
|
7% Debentures due 2029 [Member]
|
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 200 | 200 | ||||
|
6.95% Notes due 2029 [Member]
|
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 1,549 | 1,549 | ||||
|
6.875% Debentures due 2026 [Member]
|
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 67 | 67 | ||||
|
6.65% Debentures due 2018 [Member]
|
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 297 | 297 | ||||
|
6.50% Notes due 2011 [Member]
|
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 500 | |||||
|
6.50% Notes due 2039 [Member]
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 2,250 | 2,250 | ||||
|
6.50% Notes due 2039 [Member]
|
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 500 | 500 | ||||
|
6.00% Notes due 2020 [Member]
|
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 1,000 | 1,000 | ||||
|
5.951% Notes due 2037 [Member]
|
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 645 | 645 | ||||
|
5.95% Notes due 2036 [Member]
|
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 500 | 500 | ||||
|
5.90% Notes due 2032 [Member]
|
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 505 | 505 | ||||
|
5.90% Notes due 2038 [Member]
|
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 600 | 600 | ||||
|
5.75% Notes due 2019 [Member]
|
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 2,250 | 2,250 | ||||
|
5.625% Notes due 2016 [Member]
|
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 1,250 | 1,250 | ||||
|
5.50% Notes due 2013 [Member]
|
||||||
| Debt Instrument [Line Items] | ||||||
| Debt at face value | 750 | 750 | ||||
|
5.20% Notes due 2018 [Member]
|
||||||
| Debt Instrument [Line Items] | ||||||
| Debt at face value | 500 | 500 | ||||
|
4.75% Notes due 2012 [Member]
|
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 897 | 897 | ||||
|
4.75% Notes due 2014 [Member]
|
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 1,500 | 1,500 | ||||
|
4.60% Notes due 2015 [Member]
|
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 1,500 | 1,500 | ||||
|
4.40% Notes due 2013 [Member]
|
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 400 | 400 | ||||
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Commercial Paper [Member]
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 1,128 | 1,182 | ||||
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Industrial Development Bonds due 2012 through 2038 at 0.08% - 5.75% at year-end 2011 and 0.33% - 5.75% at year-end 2010 [Member]
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 252 | 252 | ||||
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Guarantee of savings plan bank loan payable due 2015 at 2.29% at year-end 2011 and 2.06% at year-end 2010 [Member]
|
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 15 | 64 | ||||
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Note payable to Merey Sweeny, L.P. due 2020 at 7% (related party) [Member]
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 133 | 144 | ||||
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Marine Terminal Revenue Refunding Bonds due 2031 at 0.08% - 0.15% at year-end 2011 and 0.33% - 0.48% at year-end 2010 [Member]
|
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | 265 | 265 | ||||
|
Other Debt [Member]
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| Debt Instrument [Line Items] | ||||||
| Debt at face value | $ 28 | $ 31 | ||||
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