Environmental remediation expense paid over a period.

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Restructuring and related cost, recognized benefits over period.

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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The charge against earnings in the period for known or estimated future costs arising from requirements to perform environmental remediation activities.

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Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

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The charge against earnings resulting from the write down of long lived assets other than goodwill due to the difference between the carrying value and lower fair value.

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Amount of expense classified as other.

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Amount of costs incurred to date for the specified restructuring cost.

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Amount of expected cost remaining for the specified restructuring cost.

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The expected number of positions to be eliminated as a result of restructuring activities.

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Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of restructuring cost.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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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.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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Amount of accelerated depreciation charged against earnings associated with exit from or disposal of business activities or restructuring plan.

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Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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Restructuring, Asset-Related, and Other Charges - Narrative (Details) $ in Millions	1 Months Ended	3 Months Ended			9 Months Ended	12 Months Ended
	Mar. 31, 2018 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Sep. 30, 2018 USD ($)	Dec. 31, 2020 USD ($) Employee	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 Employee	Dec. 31, 2021 USD ($)
Restructuring Cost and Reserve [Line Items]
Asset-related charges						$ 22	$ 43	$ 4
Restructuring charges						20	44	45
Environmental remediation liabilities	$ 3					71	200	101
Employee separation related liabilities		$ 7	$ 16			7	15	16
Severance costs						17	21	14
2017 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges						(1)	3	27
Restructuring charges incurred to date		61				61
Employee separation related liabilities		0	10			0	1	10
2018 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges						0	(1)	5
Employee separation related liabilities		0	5			0	0	5
Severance costs			5
2019 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges						3	22	0
Restructuring charges incurred to date		25				25
Employee separation related liabilities		2	0			2	14	0
2020 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges						13	0	0
Employee separation related liabilities		3	$ 0			3	0	0
Plant and Product Line Closures [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges						5	20	13
Corporate Function Efforts [Member] \| 2017 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges							3	18
Voluntary Separation Program [Member] \| 2017 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Number of employees eliminated as a result of restructuring activities \| Employee									300
Accrual of termination benefits recognized				$ 18
Voluntary Separation Program One-Time Financial Incentives [Member] \| 2017 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
One time financial incentives recognized over the period for participating employee to provide service					$ 9
Methylamines and Methylamides Business [Member]
Restructuring Cost and Reserve [Line Items]
Accelerated depreciation							34
Operating Segments [Member]
Restructuring Cost and Reserve [Line Items]
Other charges						38	0	0
Operating Segments [Member] \| Methylamines and Methylamides Business [Member]
Restructuring Cost and Reserve [Line Items]
Accelerated depreciation							34
Corporate and Other [Member]
Restructuring Cost and Reserve [Line Items]
Asset-related charges						4	0	0
Corporate and Other [Member] \| 2017 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges						(1)	0	15
Corporate and Other [Member] \| 2018 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges						0	(1)	5
Corporate and Other [Member] \| 2019 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges						0	9	0
Corporate and Other [Member] \| 2020 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges						5	0	0
Corporate and Other [Member] \| Plant and Product Line Closures [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges						1	18	9
Corporate and Other [Member] \| Deepwater, New Jersey [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges incurred to date		28				28
Corporate and Other [Member] \| Deepwater, New Jersey [Member] \| Decommissioning Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges						1	18	9
Titanium Technologies [Member] \| Operating Segments [Member]
Restructuring Cost and Reserve [Line Items]
Accelerated depreciation							9
Asset-related charges						0	9	0
Other charges						1	0	0
Titanium Technologies [Member] \| Operating Segments [Member] \| 2017 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges						0	1	1
Titanium Technologies [Member] \| Operating Segments [Member] \| 2019 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges						0	5	0
Titanium Technologies [Member] \| Operating Segments [Member] \| 2020 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges						3	0	0
Advanced Performance Materials [Member] \| Operating Segments [Member]
Restructuring Cost and Reserve [Line Items]
Asset-related charges						10	0	0
Advanced Performance Materials [Member] \| Operating Segments [Member] \| 2017 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges						0	1	5
Advanced Performance Materials [Member] \| Operating Segments [Member] \| 2019 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges						2	4	0
Advanced Performance Materials [Member] \| Operating Segments [Member] \| 2020 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges						3	0	0
Chemical Solutions [Member] \| Mining Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Long-lived assets		146				146
Chemical Solutions [Member] \| Contract Termination Fees [Member] \| Mining Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Other charges		26
Chemical Solutions [Member] \| Other Related Prepaid Costs [Member] \| Mining Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Other charges		11
Chemical Solutions [Member] \| Operating Segments [Member]
Restructuring Cost and Reserve [Line Items]
Asset-related charges						8	34	4
Other charges						37	0	0
Chemical Solutions [Member] \| Operating Segments [Member] \| 2017 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges						0	0	2
Chemical Solutions [Member] \| Operating Segments [Member] \| 2019 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges						0	1	0
Chemical Solutions [Member] \| Operating Segments [Member] \| 2020 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges						1	0	0
Chemical Solutions [Member] \| Operating Segments [Member] \| Plant and Product Line Closures [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges						4	2	4
Chemical Solutions [Member] \| Operating Segments [Member] \| Niagara Falls, NY [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges incurred to date		40				40
Chemical Solutions [Member] \| Operating Segments [Member] \| Niagara Falls, NY [Member] \| Decommissioning Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges						2	$ 2	$ 4
Chemical Solutions [Member] \| Operating Segments [Member] \| Niagara Falls, NY [Member] \| Additional Restructuring Charges [Member] \| Forecast [Member]
Restructuring Cost and Reserve [Line Items]
Additional restructuring charges expected to be incurred										$ 3
Chemical Solutions [Member] \| Operating Segments [Member] \| Pascagoula, Mississippi [Member] \| Plant and Product Line Closures [Member]
Restructuring Cost and Reserve [Line Items]
Asset-related charges						10
Property, plant, and equipment and other asset impairments						6
Environmental remediation liabilities						$ 4
Environmental remediation liabilities paid over a period						16 years
Employee separation related liabilities		$ 2				$ 2
Number of employees eliminated as a result of restructuring activities \| Employee						75
Chemical Solutions [Member] \| Operating Segments [Member] \| Pascagoula, Mississippi [Member] \| Decommissioning Dismantling And Other Costs \| Forecast [Member]
Restructuring Cost and Reserve [Line Items]
Additional restructuring charges expected to be incurred										$ 12