Equity Investments (Details) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2020 USD ($)	Sep. 30, 2020 USD ($)
Equity investments [Line Items]
Payment for acquisition of equity method investments		$ 472
Bora LyondellBasell Petrochemical Co. Ltd [Member]
Equity investments [Line Items]
Payment for acquisition of equity method investments	$ 472
Equity investment, ownership percentage	50.00%	50.00%
Equity investment, description of principal activities	BLYB’s manufacturing facility located in Panjin, China includes a 1.1 million tons per annum flexible naphtha / LPG cracker and associated polyethylene production capacity of 0.8 million tons per annum and 0.6 million tons per annum of polypropylene. The materials produced at the facility serve various industries in China, including packaging, transportation, building and construction, and healthcare and hygiene.

A description of the principal activities of an investee accounted for under the equity method.

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- Definition

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

+ References

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

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- Definition

The cash outflow associated with the investment in or advances to an entity in which the reporting entity shares control of the entity with another party or group.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3213-108585

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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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