Goodwill and Other Intangible Assets - Schedule of Other Intangible Assets (Detail) - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2019	Dec. 31, 2018
Finite Lived Intangible Assets [Line Items]
Net Carrying Amount		$ 790	$ 1,009
Other Intangible Assets [Member]
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	[1]	894	1,071
Accumulated Amortization	[1]	(104)	(62)
Net Carrying Amount	[1]	$ 790	1,009
Other Intangible Assets [Member] | Process Technologies [Member]
Finite Lived Intangible Assets [Line Items]
Weighted Average Useful Life		27 years
Gross Carrying Amount		$ 510	514
Accumulated Amortization		(31)	(14)
Net Carrying Amount		$ 479	500
Other Intangible Assets [Member] | Trade Names [Member]
Finite Lived Intangible Assets [Line Items]
Weighted Average Useful Life		12 years
Gross Carrying Amount		$ 235	401
Accumulated Amortization		(29)	(23)
Net Carrying Amount		$ 206	378
Other Intangible Assets [Member] | Customer Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Weighted Average Useful Life		10 years
Gross Carrying Amount		$ 123	129
Accumulated Amortization		(40)	(23)
Net Carrying Amount		$ 83	106
Other Intangible Assets [Member] | Trademarks [Member]
Finite Lived Intangible Assets [Line Items]
Weighted Average Useful Life		10 years
Gross Carrying Amount		$ 26	27
Accumulated Amortization		(4)	(2)
Net Carrying Amount		$ 22	$ 25

[1] The decrease in other intangible assets during the nine months ended September 30, 2019 primarily related to an impairment charge of $140 million discussed above, amortization expense of $65 million, intangible assets allocated to the disposition of APP and the impact of foreign currency translation, partially offset by an increase of approximately $6 million due to the acquisition of the assets of Siluria, discussed in Note 4, Acquisition and Disposition Transactions.   Amortization expense is anticipated to be $22 million, $87 million, $70 million, $52 million and $52 million for the remainder of 2019, 2020, 2021, 2022 and 2023, respectively.