Variable Interest Entity - Additional Information (Details) $ in Millions	12 Months Ended
Dec. 31, 2021 USD ($) kt
Variable Interest Entity [Line Items]
Dividends declared \| $	$ 0.2
KFPC \| Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Ownership percentage	50.00%
Minimum percent to be purchased from plant production	80.00%
Formosa Petrochemical Corporation \| Taiwan \| BASF, S.A.
Variable Interest Entity [Line Items]
Capacity of plant \| kt	30

Capacity of Plant

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- Definition

Minimum Percent to be Purchased from Plant Production

+ References

No definition available.

+ Details

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- Definition

Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

+ Details

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Balance Type:	debit
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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.

+ Details

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- Definition

Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 5A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=123419778&loc=SL6759159-111685

+ Details

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- Details

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- Details

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- Details

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- Details

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- Details

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