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Guarantees (Details) - USD ($) $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2018 | Dec. 31, 2017
Continued development [Member] | Australia Pacific APLNG [Member] |  |
Guarantor Obligations [Line Items] |  |
Maximum potential amount of future payments | $ 140 |
Terms of guarantees outstanding | up to 27 years or the life of the venture |
Other Guarantees [Member] |  |
Guarantor Obligations [Line Items] |  |
Maximum potential amount of future payments | $ 780 |
Terms of guarantees outstanding | up to four years |
Indemnifications [Member] |  |
Guarantor Obligations [Line Items] |  |
Environmental accruals for known contamination in carrying amount recorded for indemnifications | $ 40 |
Guarantor Obligations, Current Carrying Value | $ 100 |
Indemnifications [Member] | Refinery Supplier [Member] |  |
Guarantor Obligations [Line Items] |  |
Guarantor Obligations, Current Carrying Value |  | $ 98
Carrying value of indemnification asset from other party |  | $ 98
Guarantee existing sales agreement of natural gas delivery | Australia Pacific APLNG [Member] |  |
Guarantor Obligations [Line Items] |  |
Terms of guarantees outstanding | up to 24 years |
Max potential future payments-reckless breach [Member] | Australia Pacific APLNG [Member] |  |
Guarantor Obligations [Line Items] |  |
Maximum potential amount of future payments | $ 1,580 |
Max potential future payments-prorata share [Member] | Australia Pacific APLNG [Member] |  |
Guarantor Obligations [Line Items] |  |
Maximum potential amount of future payments | $ 940 |
Finance Reserve Guarantee [Member] | Australia Pacific APLNG [Member] |  |
Guarantor Obligations [Line Items] |  |
Ownership percentage in equity investment | 37.50% |
Maximum potential amount of future payments | $ 170 |
Terms of guarantees outstanding | 12 years |
Carrying value of indemnification asset from other party | $ 14 |

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- Definition Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=115931803&loc=d3e12069-110248 + Details
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