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Employee separation and asset related charges, net.

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Restructuring cost excluding assets charges.

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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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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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Amount, after cash payment, 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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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)	1 Months Ended	3 Months Ended			12 Months Ended
	Aug. 31, 2015 production_line	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($) Employee
Restructuring Cost and Reserve [Line Items]
Restructuring, asset-related and other charges					$ 87,000,000	$ 49,000,000	$ 57,000,000
Asset-related charges					43,000,000	4,000,000	1,000,000
Employee separation charges					21,000,000	14,000,000	23,000,000
2017 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, asset-related and other charges					3,000,000	27,000,000	32,000,000
Aggregate restructuring costs					62,000,000
2018 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, asset-related and other charges		$ 5,000,000
2019 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Employee separation charges					22,000,000
New Johnsonville, Tennessee [Member]
Restructuring Cost and Reserve [Line Items]
Number of production lines shut down during period \| production_line	1
Corporate Function Efforts [Member] \| 2017 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Employee separation and asset related charges					3,000,000	18,000,000	$ 14,000,000
Voluntary Separation Program [Member] \| 2017 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Number of employees to be separated by end of 2018 \| Employee							300
Accrual of termination benefits recognized			$ 18,000,000
Voluntary Separation Program One-Time Financial Incentives [Member] \| 2017 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Accrual of termination benefits recognized					9,000,000
Operating Segments [Member] \| Niagara Falls, NY [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs, excluding asset-related charges					37,000,000
Operating Segments [Member] \| Decommissioning Costs [Member] \| Niagara Falls, NY [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, asset-related and other charges					2,000,000	4,000,000	$ 17,000,000
Operating Segments [Member] \| Additional Restructuring Charges [Member] \| Niagara Falls, NY [Member]
Restructuring Cost and Reserve [Line Items]
Additional restructuring charges expected to be incurred					5,000,000
Operating Segments [Member] \| Fluoroproducts [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs, excluding asset-related charges							17,000,000
Operating Segments [Member] \| Fluoroproducts [Member] \| Decommissioning Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, asset-related and other charges							3,000,000
Operating Segments [Member] \| Chemical Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Asset-related charges					34,000,000	4,000,000	0
Operating Segments [Member] \| Titanium Technologies [Member]
Restructuring Cost and Reserve [Line Items]
Asset-related charges					9,000,000	0	0
Proceeds from sale of land				$ 10,000,000
Accelerated depreciation					9,000,000
Operating Segments [Member] \| Titanium Technologies [Member] \| Edge Moor, Delaware Site [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs, excluding asset-related charges							60,000,000
Operating Segments [Member] \| Titanium Technologies [Member] \| Decommissioning Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, asset-related and other charges							4,000,000
Corporate and Other [Member]
Restructuring Cost and Reserve [Line Items]
Asset-related charges					0	0	$ 1,000,000
Corporate and Other [Member] \| Decommissioning Costs [Member] \| Deepwater, New Jersey [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, asset-related and other charges					18,000,000	$ 9,000,000
Corporate and Other [Member] \| Additional Restructuring Charges [Member] \| Deepwater, New Jersey [Member]
Restructuring Cost and Reserve [Line Items]
Additional restructuring charges expected to be incurred					6,000,000
Restructuring charges incurred					$ 27,000,000