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v3.23.1

Accounts Receivable Securitization Program - Receivables Sold and Fees Incurred Under the Program during the Related Periods (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2023 | Mar. 31, 2022
Transfers and Servicing [Abstract] |  |
Cash proceeds from collections reinvested in the program | $ 144 | $ 28
Incremental accounts receivables sold | 138 | 103
Fees incurred | $ 2 | $ 0

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- Definition Fees Incurred + References No definition available. + Details
Name: | trox_FeesIncurred
Namespace Prefix: | trox_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Incremental Accounts Receivables Sold + References No definition available. + Details
Name: | trox_IncrementalAccountsReceivablesSold
Namespace Prefix: | trox_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Proceeds from securitizations of receivables treated as collateralized borrowings, which are classified as financing transactions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromAccountsReceivableSecuritization
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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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