Accumulated Other Comprehensive Loss Attributable to Tronox Holdings plc and Other Equity Items - Narrative (Details) - USD ($)	9 Months Ended
Sep. 30, 2026	Feb. 21, 2024
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Shares authorized for repurchase		$ 300,000,000
Stock repurchased during period	$ 0

Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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+ Details