Unrecorded Unconditional Purchase Obligation, Due After Four Years

No definition available.

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Namespace Prefix:	trox_
Data Type:	xbrli:monetaryItemType
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- Definition

The charge against earnings in the period for known or estimated future costs arising from requirements to perform environmental remediation activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 30
-Section 55
-Paragraph 11
-URI https://asc.fasb.org/extlink&oid=6571209&loc=d3e13644-110860

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
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-Section 45
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-URI https://asc.fasb.org/extlink&oid=109237650&loc=d3e13064-110858

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 30
-Section 50
-Paragraph 12
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=6393242&loc=d3e13296-110859

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees.

+ References

No definition available.

+ Details

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

- Definition

Amount of loss contingency liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349

Reference 2: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 10
-URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14615-108349

+ Details

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

- References

No definition available.

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

- Definition

The value (monetary amount) of the award the plaintiff seeks in the legal matter.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
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-URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14557-108349

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

- Definition

This element represents the cash inflow during the period from the sale of a component of the entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3179-108585

+ Details

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Balance Type:	debit
Period Type:	duration

- References

No definition available.

+ Details

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

- Definition

Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=123406679&loc=d3e25336-109308

+ Details

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

- Definition

Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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

- Definition

Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in remainder of current fiscal year.

+ References

No definition available.

+ Details

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

- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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Data Type:	na
Balance Type:
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- Details

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- Details

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Data Type:	na
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- Details

Name:	us-gaap_LineOfCreditFacilityAxis=trox_HawkinsPointMember
Namespace Prefix:
Data Type:	na
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Period Type:

Commitments and Contingencies (Details) - USD ($) $ in Millions		1 Months Ended		3 Months Ended
	Apr. 18, 2022	Jun. 30, 2019	May 31, 2019	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Unrecorded Unconditional Purchase Obligation, Fiscal Year Maturity [Abstract]
Purchase commitments remainder of 2023				$ 293
Purchase commitments for 2024				174
Purchase commitments for 2025				159
Purchase commitments for 2026				158
Purchase commitments for 2027				164
Purchase commitments due thereafter				1,559
Commitments and Contingencies [Abstract]
Loss contingency				109
Loss contingency provision				42
Venator settlement				0	$ 85	$ 85
Venator Materials PLC VS. Tronox Limited
Commitments and Contingencies [Abstract]
Damages sought		$ 400
Cristal, North America TiO2 Business \| Discontinued Operations, Disposed of by Sale
Commitments and Contingencies [Abstract]
Proceeds from divestiture of business, net of transaction costs		$ 701
Venator Materials PLC \| Venator Materials PLC VS. Tronox Limited
Commitments and Contingencies [Abstract]
Damages sought			$ 75
Venator settlement	$ 85
Wells Fargo Revolver \| Letters of Credit
Commitments and Contingencies [Abstract]
Loss contingency				70
Absa Revolver \| Bank Guarantees
Commitments and Contingencies [Abstract]
Loss contingency				39
Hawkins Point \| Bank Guarantees
Commitments and Contingencies [Abstract]
Loss contingency				$ 50