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

X

- 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

X

- 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

X

- 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

X

- References

No definition available.

+ Details

Name:	us-gaap_TransfersAndServicingAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration