Employee separation and asset related charges, net.

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- Definition

Restructuring cost excluding non cash assets charges.

+ References

No definition available.

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- Definition

Amount of expected cost remaining for the specified restructuring cost.

+ References

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- Definition

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

+ References

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4(b))
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

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- Definition

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Restructuring and Asset Related Charges, Net (Narrative) (Details)	1 Months Ended	3 Months Ended			9 Months Ended		12 Months Ended
	Oct. 31, 2017 Employee	Sep. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Dec. 31, 2018 USD ($)
Restructuring Cost and Reserve [Line Items]
Employee separation and asset related charges		$ 8,000,000		$ 14,000,000	$ 31,000,000	$ 41,000,000
2017 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Employee separation and asset related charges		3,000,000		0	8,000,000	0
2017 Restructuring Program [Member] \| Minimum [Member] \| Restructuring-Related Charges Expected to be Incurred Though December 31, 2018 [Member]
Restructuring Cost and Reserve [Line Items]
Employee separation and asset related charges							$ 45,000,000
2017 Restructuring Program [Member] \| Maximum [Member] \| Restructuring-Related Charges Expected to be Incurred Though December 31, 2018 [Member]
Restructuring Cost and Reserve [Line Items]
Employee separation and asset related charges							$ 55,000,000
Voluntary Separation Program [Member] \| 2017 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Amounts recognized in consolidated financial statements					0
Voluntary Separation Program [Member] \| 2017 Restructuring Program [Member] \| Minimum [Member] \| Subsequent Event [Member]
Restructuring Cost and Reserve [Line Items]
Number of employees to be separated by end of 2018 \| Employee	300
Voluntary Separation Program [Member] \| 2017 Restructuring Program [Member] \| Maximum [Member] \| Subsequent Event [Member]
Restructuring Cost and Reserve [Line Items]
Number of employees to be separated by end of 2018 \| Employee	350
Titanium Technologies [Member] \| Operating Segments [Member] \| Edge Moor Plant [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs, excluding non-cash asset-related charges			$ 60,000,000
Titanium Technologies [Member] \| Operating Segments [Member] \| Decommissioning and Dismantling Costs [Member]
Restructuring Cost and Reserve [Line Items]
Employee separation and asset related charges				5,000,000	4,000,000	24,000,000
Fluoroproducts [Member] \| Operating Segments [Member]
Restructuring Cost and Reserve [Line Items]
Employee separation and asset related charges				1,000,000	3,000,000	6,000,000
Restructuring costs, excluding non-cash asset-related charges					17,000,000
Chemical Solutions [Member] \| Operating Segments [Member] \| Niagara Falls, NY [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs, excluding non-cash asset-related charges					30,000,000
Chemical Solutions [Member] \| Operating Segments [Member] \| Decommissioning and Dismantling Costs [Member] \| Niagara Falls, NY [Member]
Restructuring Cost and Reserve [Line Items]
Employee separation and asset related charges		5,000,000		$ 7,000,000	16,000,000	$ 6,000,000
Chemical Solutions [Member] \| Operating Segments [Member] \| Decommissioning and Site Redevelopment [Member] \| Niagara Falls, NY [Member]
Restructuring Cost and Reserve [Line Items]
Additional restructuring charges expected to be incurred in 2017		$ 5,000,000			$ 5,000,000