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Related Party Transactions (Details) - USD ($)	12 Months Ended			32 Months Ended	41 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2022	Sep. 30, 2021	Dec. 17, 2020	Dec. 29, 2019	May 09, 2018
Related Party Transaction [Line Items]
Common stock, shares outstanding (in shares)	154,496,923	153,934,677		154,496,923
Other income (expense)	$ (13,000,000)	$ 12,000,000	$ 26,000,000
Prepaid and other assets	135,000,000	132,000,000		$ 135,000,000
Interest expense	125,000,000	157,000,000	$ 189,000,000
MGT Loan
Related Party Transaction [Line Items]
Note payable	30,000,000	33,000,000		30,000,000		$ 36,000,000
Notes payable due within 12 months	7,000,000	7,000,000		$ 7,000,000
Interest expense	1,000,000	1,000,000
Financing activities - Repayment of MGT loan	$ 3,000,000	4,000,000
MGT Loan | Maximum
Related Party Transaction [Line Items]
Maturity period of loan	6 years
MGT Loan | Minimum
Related Party Transaction [Line Items]
Maturity period of loan	5 years
Cristal International Holdings B.V.
Related Party Transaction [Line Items]
Ownership percentage	24.00%			24.00%
Cristal International Holdings B.V.
Related Party Transaction [Line Items]
Common stock, shares outstanding (in shares)	37,580,000			37,580,000
Advanced Metal Industries Cluster And Toho Titanium Metal Co. Ltd (ATTM) | Slagger
Related Party Transaction [Line Items]
Commitment to Loan								$ 322,000,000
Advanced Metal Industries Cluster Company Limited | Purchases Of Feedstock Material | Slagger
Related Party Transaction [Line Items]
Amount of transaction with related party	$ 60,000,000	0
Due to related parties, current	14,000,000	0		$ 14,000,000
Affiliated Entity | Purchase Of Chlorine Gas
Related Party Transaction [Line Items]
Purchases from related party	4,000,000	8,000,000
Affiliated Entity | Advanced Metal Industries Cluster Company Limited | Option Agreement, Option To Acquire Special Purchase Vehicle
Related Party Transaction [Line Items]
Ownership percentage by related party								90.00%
Affiliated Entity | Advanced Metal Industries Cluster Company Limited | Option Agreement, Amount Loaned For Capital Expenditures And Operational Expenses, Interest Earned
Related Party Transaction [Line Items]
Notes receivable from related party	13,000,000	9,000,000		13,000,000
Affiliated Entity | Advanced Metal Industries Cluster Company Limited | Acquisition Of Assets Producing Metal Grade TiCl4
Related Party Transaction [Line Items]
Notes receivable from related party							$ 36,000,000
Affiliated Entity | AMIC | Option Agreement, Amounts To Be Reimbursed For Capital Expenditures And Operational Expenses
Related Party Transaction [Line Items]
Due from related parties								$ 125,000,000
Payments to fund long-term loans to related parties				36,000,000
Affiliated Entity | AMIC | Amended Options Agreement, Second Option, Loan Amount Forgiven | Maximum
Related Party Transaction [Line Items]
Amount of transaction with related party					$ 125,000,000
Affiliated Entity | AMIC | Amended Technical Services Agreement, Monthly Management Fee
Related Party Transaction [Line Items]
Other income (expense)	8,000,000
Prepaid and other assets	2,000,000	1,000,000		2,000,000
Affiliated Entity | AMIC | Receivable From TiCl4 Product Sales
Related Party Transaction [Line Items]
Due from related parties, current	6,000,000	6,000,000		6,000,000
Affiliated Entity | AMIC | Amended Technical Services Agreement, Other Technical Support Fees
Related Party Transaction [Line Items]
Other income (expense)	2,000,000	0
Affiliated Entity | Tasnee | Pre-Acquisition Activity
Related Party Transaction [Line Items]
Accounts receivable from related party	2,000,000			2,000,000
Affiliated Entity | Advanced Metal Industries Cluster And Toho Titanium Metal Co. Ltd (ATTM) | Purchase Of Chlorine Gas
Related Party Transaction [Line Items]
Due to related parties, current	1,000,000	1,000,000		$ 1,000,000
Affiliated Entity | Advanced Metal Industries Cluster And Toho Titanium Metal Co. Ltd (ATTM) | Acquisition Of Assets Producing Metal Grade TiCl4
Related Party Transaction [Line Items]
Ownership percentage							65.00%
AMIC
Related Party Transaction [Line Items]
Revenue from related party	$ 29,000,000	31,000,000
Tasnee | Pre-Acquisition Activity
Related Party Transaction [Line Items]
Due from related parties, current		8,000,000
Tasnee | Reimbursable Stamp Duty Taxes
Related Party Transaction [Line Items]
Due from related parties, current		4,000,000
Tasnee | Pre-Acquisition Tax Settlements
Related Party Transaction [Line Items]
Due from related parties, current		$ 3,000,000

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