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-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 10
-Section S99
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Related Parties (Details) - USD ($) $ in Millions	3 Months Ended			12 Months Ended	53 Months Ended
Related Parties (Details) - USD ($) $ in Millions	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2022	Sep. 30, 2022	Dec. 17, 2020	Dec. 29, 2019	May 09, 2018
Related Party Transaction [Line Items]
Common stock, shares outstanding (in shares)	156,717,050			154,496,923
Other income (expense), net	$ 2		$ (4)
Prepaid and other assets	134			$ 135
MGT Loan
Related Party Transaction [Line Items]
Notes payable	29			30		$ 36
Notes payable due within 12 months	7			7
Repayments of debt	$ 1	$ 1
Maximum \| MGT Loan
Related Party Transaction [Line Items]
Debt instrument, term	6 years
Minimum \| MGT Loan
Related Party Transaction [Line Items]
Debt instrument, term	5 years
MGT
Related Party Transaction [Line Items]
Revenue from related party	$ 11	6
Purchase of Chlorine Gas \| Affiliated Entity
Related Party Transaction [Line Items]
Purchases from related party	1	1
Advanced Metal Industries Cluster Company Limited \| Option Agreement, Option To Acquire Special Purchase Vehicle \| Affiliated Entity
Related Party Transaction [Line Items]
Ownership percentage by related party								90.00%
Advanced Metal Industries Cluster Company Limited \| Option Agreement, Amount Loaned For Capital Expenditures And Operational Expenses, Interest Earned \| Affiliated Entity
Related Party Transaction [Line Items]
Notes receivable, related parties	14			13
Advanced Metal Industries Cluster Company Limited \| Acquisition Of Assets Producing Metal Grade TiCl4 \| Affiliated Entity
Related Party Transaction [Line Items]
Notes receivable, related parties							$ 36
Slagger \| Advanced Metal Industries Cluster and Toho Titanium Metal Co. Ltd (ATTM)
Related Party Transaction [Line Items]
Loan commitment								$ 322
AMIC \| Option Agreement, Amounts to be Reimbursed for Capital Expenditures and Operational Expenses \| Affiliated Entity
Related Party Transaction [Line Items]
Amounts receivable from related party								$ 125
Amount loaned to related parties					$ 36
AMIC \| Amended Options Agreement, Second Option, Loan Amount Forgiven \| Affiliated Entity \| Maximum
Related Party Transaction [Line Items]
Related party transaction amount	125			125
AMIC \| Amended Technical Services Agreement, Monthly Management Fee \| Affiliated Entity
Related Party Transaction [Line Items]
Other income (expense), net	2	2
AMIC \| Amended Technical Services Agreement, Monthly Management Fee and Other Technical Support Fees \| Affiliated Entity
Related Party Transaction [Line Items]
Prepaid and other assets	3			2
Tasnee \| Pre-Acquisition Activity \| Affiliated Entity
Related Party Transaction [Line Items]
Accounts receivable, related parties, current	2			2
Advanced Metal Industries Cluster and Toho Titanium Metal Co. Ltd (ATTM) \| Purchase of Chlorine Gas \| Affiliated Entity
Related Party Transaction [Line Items]
Amount due to related party (less than)	1			1
Advanced Metal Industries Cluster and Toho Titanium Metal Co. Ltd (ATTM) \| Receivable From MGT Product Sales \| Affiliated Entity
Related Party Transaction [Line Items]
Receivable due from related parties	$ 7			6
Cristal's Titanium Dioxide Business
Related Party Transaction [Line Items]
Ownership percentage	24.00%
Acquisition Of Assets Producing Metal Grade TiCl4 \| Affiliated Entity \| Advanced Metal Industries Cluster and Toho Titanium Metal Co. Ltd (ATTM)
Related Party Transaction [Line Items]
Ownership percentage							65.00%
Cristal's Titanium Dioxide Business
Related Party Transaction [Line Items]
Common stock, shares outstanding (in shares)	37,580,000
Slagger \| Purchases of Feedstock Material \| Advanced Metal Industries Cluster Company Limited
Related Party Transaction [Line Items]
Related party transaction amount	$ 43	$ 9
Amount due to related party (less than)	$ 29			$ 14