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Accounts Receivable Securitization Program - Narrative (Details) - USD ($) $ in Millions | Mar. 31, 2023 | Dec. 31, 2022
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Transfers and Servicing [Abstract] |  |
Percentage of additional purchase receivable | 100.00% |
Accounts receivable from securitization | $ 117 | $ 123
Unsold receivables retained | $ 99 | $ 69

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- Definition Accounts Receivable Securitization, Unsold Receivables + References No definition available. + Details
Name: | trox_AccountsReceivableSecuritizationUnsoldReceivables
Namespace Prefix: | trox_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Percentage Of Face Value Of Additional Purchase Receivable + References No definition available. + Details
Name: | trox_PercentageOfFaceValueOfAdditionalPurchaseReceivable
Namespace Prefix: | trox_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition The amount owed to the reporting entity by counterparties in securitized loan transactions. + References No definition available. + Details
Name: | us-gaap_AccountsReceivableFromSecuritization
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
Name: | us-gaap_TransfersAndServicingAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration