Debt Instrument, Percentage Of Debt Down Payment

No definition available.

Name:	trox_DebtInstrumentPercentageOfDebtDownPayment
Namespace Prefix:	trox_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Monthly Installments Period

+ References

No definition available.

+ Details

Name:	trox_MonthlyInstallmentsPeriod
Namespace Prefix:	trox_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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+ Details

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

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer.

+ References

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

+ References

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=trox_ShortTermInsurancePremiumFinancingAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Debt - Narrative (Details) ر.س in Millions, $ in Millions	1 Months Ended		3 Months Ended
Debt - Narrative (Details) ر.س in Millions, $ in Millions	May 31, 2025 USD ($)	Aug. 31, 2024 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2025 SAR (ر.س)	Jul. 28, 2025 USD ($)	Apr. 29, 2025 USD ($)	Apr. 29, 2025 SAR (ر.س)	Dec. 31, 2024 USD ($)
Line of Credit Facility [Line Items]
Short-term debt			$ 266					$ 65
Subsequent Event
Line of Credit Facility [Line Items]
Short-term debt					$ 339
Saudi Export Import Bank Credit Facility \| Notes Payable to Banks
Line of Credit Facility [Line Items]
Maximum borrowing capacity						$ 40	ر.س 150
Annual interest rate			4.88%
Proceeds from long-term lines of credit			$ 40	ر.س 150
Insurance premium financing
Line of Credit Facility [Line Items]
Annual interest rate	6.40%	8.60%
Short-term debt			$ 1
Original principal	$ 1	$ 29
Insurance premium down payment, percentage		37.00%
Monthly installments period	10 months	9 months