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Guarantees - Additional Information (Detail) (USD $)
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12 Months Ended | 12 Months Ended | ||||||
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Dec. 31, 2011
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Dec. 31, 2011
Australia Pacific LNG [Member]
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Dec. 31, 2011
Qatargas 3 [Member]
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Dec. 31, 2011
Guarantees of Joint Venture Debt [Member]
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Dec. 31, 2011
Train 1 [Member]
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Dec. 31, 2011
Other Guarantees [Member]
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Dec. 31, 2005
Performance Guarantee [Member]
Qatargas 3 [Member]
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Dec. 31, 2011
Indemnification Agreement [Member]
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| Guarantor Obligations [Line Items] | ||||||||
| Ownership percentage in equity investment | 50.00% | 42.50% | 30.00% | 30.00% | ||||
| Loan facilities of joint venture | $ 4,000,000,000 | $ 4,000,000,000 | ||||||
| Loan commitment to joint venture | 1,200,000,000 | 1,200,000,000 | ||||||
| Terms of guarantees outstanding | 5 to 20 years | Up to 24 years | Up to 13 years or life of the venture. | |||||
| Maximum potential amount of future payments to third-party lenders under the guarantee | 1,261,000,000 | 100,000,000 | 171,000,000 | 450,000,000 | ||||
| Maximum potential amount of future payments under the guarantees in the event of intentional or reckless breach | 2,820,000,000 | |||||||
| Carrying value of the guarantee to third-party lenders | 362,000,000 | |||||||
| Environmental accruals for known contamination in carrying amount recorded for indemnifications | $ 427,000,000 | $ 218,000,000 | ||||||