Guarantees - Textual (Details) $ in Millions	3 Months Ended
Mar. 31, 2021 USD ($)
Other Guarantees [Member]
Guarantor Obligations [Line Items]
Maximum potential amount of future payments	$ 730
Guarantor Obligations, Current Carrying Value	$ 11
Other Guarantees [Member] \| Maximum [Member]
Guarantor Obligations [Line Items]
Terms of guarantees outstanding	five years
Indemnifications [Member]
Guarantor Obligations [Line Items]
Guarantor Obligations, Current Carrying Value	$ 50
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	10 years
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
Guarantor Obligations [Line Items]
Maximum potential amount of future payments	$ 740
Australia Pacific APLNG [Member] \| Guarantee existing sales agreement of natural gas delivery \| Maximum [Member]
Guarantor Obligations [Line Items]
Terms of guarantees outstanding	1 to 21 years
Australia Pacific APLNG [Member] \| Max potential future payments-reckless breach [Member]
Guarantor Obligations [Line Items]
Maximum potential amount of future payments	$ 1,300
Australia Pacific APLNG [Member] \| Continued development [Member]
Guarantor Obligations [Line Items]
Maximum potential amount of future payments	180
Guarantor Obligations, Current Carrying Value	$ 11
Australia Pacific APLNG [Member] \| Continued development [Member] \| Maximum [Member]
Guarantor Obligations [Line Items]
Terms of guarantees outstanding	16 to 25 years or the life of the venture

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

+ Details

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- Definition

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

+ 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 (c)
-URI http://asc.fasb.org/extlink&oid=121555522&loc=d3e12069-110248

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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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=121555522&loc=d3e12069-110248

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=121555522&loc=d3e12069-110248

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