Guarantees - Textual (Details) $ in Millions	3 Months Ended
Mar. 31, 2020 USD ($)
Other Guarantees [Member]
Guarantor Obligations [Line Items]
Maximum potential amount of future payments	$ 810
Guarantor Obligations, Current Carrying Value	$ 11
Other Guarantees [Member] \| Maximum [Member]
Guarantor Obligations [Line Items]
Terms of guarantees outstanding	P5Y
Indemnifications [Member]
Guarantor Obligations [Line Items]
Guarantor Obligations, Current Carrying Value	$ 70
Environmental accruals for known contamination in carrying amount recorded for indemnifications	$ 30
Australia Pacific APLNG [Member]
Guarantor Obligations [Line Items]
Ownership percentage in equity investment	37.50%
Australia Pacific APLNG [Member] \| Finance Reserve Guarantee [Member]
Guarantor Obligations [Line Items]
Terms of guarantees outstanding	P11Y
Maximum potential amount of future payments	$ 170
Guarantor Obligations, Current Carrying Value	$ 14
Australia Pacific APLNG [Member] \| Guarantee existing sales agreement of natural gas delivery \| Maximum [Member]
Guarantor Obligations [Line Items]
Terms of guarantees outstanding	P22Y
Australia Pacific APLNG [Member] \| Max potential future payments-reckless breach [Member]
Guarantor Obligations [Line Items]
Maximum potential amount of future payments	$ 1,200
Australia Pacific APLNG [Member] \| Max potential future payments-prorata share [Member]
Guarantor Obligations [Line Items]
Maximum potential amount of future payments	640
Australia Pacific APLNG [Member] \| Continued development [Member]
Guarantor Obligations [Line Items]
Maximum potential amount of future payments	120
Guarantor Obligations, Current Carrying Value	$ 6
Australia Pacific APLNG [Member] \| Continued development [Member] \| Maximum [Member]
Guarantor Obligations [Line Items]
Terms of guarantees outstanding	26 years or the life of the venture

Total costs accrued as of the balance sheet date for environmental loss contingencies.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.

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-Publisher FASB
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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.

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Describe the approximate term of the guarantee or each group of similar guarantees.

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