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Share-based Compensation - Narrative (Details) |  | 12 Months Ended |
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Jun. 24, 2020 shares | Dec. 31, 2022 USD ($) performance_period $ / shares shares | Dec. 31, 2021 USD ($) $ / shares shares | Dec. 31, 2020 USD ($) $ / shares | Mar. 27, 2019 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Stock-based compensation expense | $ |  |  | $ 3,000,000 |  |
Accelerated cost | $ |  |  | $ 2,000,000 |  |
Options exercised (in shares) |  | 13,881 | 424,832 |  |
Intrinsic value of options exercised | $ |  | $ 1,000,000 | $ 2,000,000 |  |
Cash received from exercise of stock options | $ |  | 1,000,000 | 8,000,000 | $ 0 |
Unrecognized compensation expense related to options, adjusted for estimated forfeitures | $ |  | $ 0 | $ 0 | $ 0 |
Restricted Share Units (RSUs) |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Granted (in shares) |  | 2,313,346 |  |  |
Granted (in dollars per share) | $ / shares |  | $ 19.47 | $ 20.91 | $ 8.89 |
RSU shares granted and vested immediately (in shares) |  | 1,115,249 |  |  |
Unrecognized compensation expense related to nonvested restricted shares and nonvested RSUs, adjusted for estimated forfeitures | $ |  | $ 27,000,000 |  |  |
Weighted average period of recognition for unrecognized compensation expense |  | 1 year 7 months 6 days |  |  |
Total fair value of restricted shares and RSUs vested | $ |  | $ 44,000,000 | $ 41,000,000 | $ 30,000,000 |
Restricted Stock Units (RSUs), Time-Based Awards |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Award vesting period |  | 3 years |  |  |
Restricted Stock Units (RSUs), Time-Based Awards | Management |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Granted (in shares) |  | 582,136 |  |  |
Restricted Stock Units (RSUs), Time-Based Awards | Director |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Granted (in shares) |  | 68,296 |  |  |
Restricted Stock Units (RSUs), Performance-Based Awards |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Granted (in shares) |  | 533,416 |  |  |
Granted (in dollars per share) | $ / shares |  |  | $ 29.07 | $ 10.00 |
Restricted Stock 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) |  | 266,708 |  |  |
Award performance Period |  | 3 years |  |  |
Granted (in dollars per share) | $ / shares |  | $ 34.41 |  |  |
Restricted Stock 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) |  | 266,708 |  |  |
Number of performance periods | performance_period |  | 3 |  |  |
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 | 8,000,000 |  |  |  |
Class A |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of shares, awards granted (in shares) |  |  |  |  | 20,781,225

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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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