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Accounts Receivable Securitization Program - Schedule of Receivables Sold and Fees Incurred Under the Program (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Nov. 30, 2022	Dec. 31, 2025	Dec. 31, 2024
Transfers and Servicing [Abstract]
Cash proceeds from collections reinvested in the program	$ 147	$ 1,091	$ 1,051
Incremental accounts receivables sold		1,106	1,080
Fees incurred		$ 13	$ 15

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- Definition

Fees Incurred

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	duration

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- Definition

Incremental Accounts Receivables Sold

+ References

No definition available.

+ Details

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Namespace Prefix:	trox_
Data Type:	xbrli:monetaryItemType
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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
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-14

+ Details

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- References

No definition available.

+ Details

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