Related Parties - Schedule of Feedstock Purchased Cost of Goods Sold (Details) - Slagger - Advanced Metal Industries Cluster Company Limited - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Related Party Transaction [Line Items]
Purchases of feedstock material	$ 14	$ 22	$ 30	$ 46
Purchases Of Feedstock Material, Settled As In-Kind Repayment Of Tronox Loans
Related Party Transaction [Line Items]
Purchases of feedstock material	0	14	10	30
Purchases Of Feedstock Material, Settled In Cash
Related Party Transaction [Line Items]
Purchases of feedstock material	$ 14	$ 8	$ 20	$ 16

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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+ Details