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- Definition

Share-Based Compensation Arrangement By Share-based Payment Award, Equity Instruments Other Than Options, Performance Period

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- 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.

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Number of additional shares authorized for issuance under share-based payment arrangement.

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Number of shares authorized for issuance under share-based payment arrangement.

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Share-Based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions				3 Months Ended		6 Months Ended
	Apr. 28, 2026	May 08, 2024	Jun. 24, 2020	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025	Jun. 23, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of authorized shares not disclosed				true		true		true
Unrecognized compensation expense for all nonvested awards, adjusted for estimated forfeitures				$ 41		$ 41
Weighted average period of recognition for unrecognized compensation expense (in years)						2 years 2 months 12 days
Share-based compensation expense						$ 11	$ 9
Restricted share units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense				$ 5	$ 4	$ 11	$ 9
Restricted Share Units (RSUs), Time-Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)						3 years
Restricted Share Units (RSUs), Performance-Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)						1,454,552
Restricted Share Units (RSUs), Performance-Based Awards \| Share-based Payment Arrangement, Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)						727,276
Award performance period (in years)						3 years
Granted (in dollars per share)						$ 14.78
Restricted Share Units (RSUs), Performance-Based Awards \| Share-based Payment Arrangement, Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)						727,276
Management \| Restricted Share Units (RSUs), Time-Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)						1,516,562
Director \| Restricted Share Units (RSUs), Time-Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)						109,830
Class A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares, awards granted (in shares)									20,781,225
Tronox Holdings Plc Amended And Restated Management Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of additional shares authorized	2,600,000	3,200,000	8,000,000