Schedule of Description of Business, Basis of Presentation, and Significant Accounting Policies [Line Items]

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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

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
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-Subparagraph (a)(1)
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- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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-Publisher FASB
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-SubTopic 20
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-Subparagraph (b)
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- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8672-108599

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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Description of Business, Basis of Presentation and Significant Accounting Policies - Narrative (Details)	3 Months Ended		9 Months Ended	12 Months Ended
	Dec. 31, 2020 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2020 USD ($)	Dec. 31, 2021 USD ($) segment	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Schedule Of Description Of Business Basis Of Presentation And Significant Accounting Policies [Line Items]
Number of operating segments \| segment				2
Goodwill, impairment loss				$ 0	$ 400,000,000	$ 0
Expected dividend yield				0.00%	0.00%	0.00%
Chemical
Schedule Of Description Of Business Basis Of Presentation And Significant Accounting Policies [Line Items]
Goodwill, impairment loss	$ 0	$ 400,000,000	$ 400,000,000	$ 0	$ 400,000,000
KFPC
Schedule Of Description Of Business Basis Of Presentation And Significant Accounting Policies [Line Items]
Percentage of investment in joint venture				50.00%
Styrenic Block Copolymer Joint Venture
Schedule Of Description Of Business Basis Of Presentation And Significant Accounting Policies [Line Items]
Percentage of investment in joint venture				50.00%