Tronox (TROX) 10-Q 10 May 19 2019 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2019	May 09, 2019
Document And Entity Information [Abstract]
Entity Registrant Name	Tronox Holdings plc
Entity Central Index Key	0001530804
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Ex Transition Period	false
Entity Common Stock, Shares Outstanding		149,318,462
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) [Abstract]
Net sales	$ 390	$ 442
Cost of goods sold	307	327
Gross profit	83	115
Selling, general and administrative expenses	67	76
Impairment loss	0	25
Income from operations	16	14
Interest expense	(49)	(49)
Interest income	9	8
Loss on extinguishment of debt	(2)	0
Other expense, net	(2)	(9)
Loss before income taxes	(28)	(36)
Income tax provision	(2)	(5)
Net loss	(30)	(41)
Net income attributable to noncontrolling interest	4	3
Net loss attributable to Tronox Holdings plc	$ (34)	$ (44)
Net loss per share, basic and diluted (in dollars per share)	$ (0.27)	$ (0.36)
Weighted average shares outstanding, basic and diluted (in shares)	124,296	122,327

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (Unaudited) [Abstract]
Net loss	$ (30)	$ (41)
Other comprehensive income:
Foreign currency translation adjustments	0	59
Pension and postretirement plans:
Amortization of unrecognized actuarial losses, net of taxes of nil and less than $1 million for the three months ended March 31, 2019 and 2018, respectively	0	1
Other comprehensive income	0	60
Total comprehensive (loss) income	(30)	19
Comprehensive income attributable to noncontrolling interest:
Net income	4	3
Foreign currency translation adjustments	11	15
Comprehensive income attributable to noncontrolling interest	15	18
Comprehensive (loss) income attributable to Tronox Holdings plc	$ (45)	$ 1

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (Unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Pension and postretirement plans:
Amortization of unrecognized actuarial losses, taxes
Maximum [Member]
Pension and postretirement plans:
Amortization of unrecognized actuarial losses, taxes		$ 1

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Current Assets
Cash and cash equivalents	$ 1,068	$ 1,034
Restricted cash	666	662
Accounts receivable, net of allowance for doubtful accounts	300	317
Inventories, net	486	479
Prepaid and other assets	49	50
Income taxes receivable	2	2
Total current assets	2,571	2,544
Noncurrent Assets
Property, plant and equipment, net	992	1,004
Mineral leaseholds, net	787	796
Intangible assets, net	169	176
Lease right of use assets	62	0
Deferred tax assets	35	37
Other long-term assets	110	85
Total assets	4,726	4,642
Current Liabilities
Accounts payable	150	133
Accrued liabilities	119	140
Short-term lease liabilities	19	0
Short-term debt	94	0
Long-term debt due within one year	58	22
Income taxes payable	2	5
Total current liabilities	442	300
Noncurrent Liabilities
Long-term debt, net	3,223	3,139
Pension and postretirement healthcare benefits	91	93
Asset retirement obligations	70	68
Long-term lease liabilities	44	0
Long-term deferred tax liabilities	159	163
Other long-term liabilities	17	17
Total liabilities	4,046	3,780
Commitments and Contingencies
Shareholders' Equity
Tronox Holdings plc ordinary shares, par value $0.01 - 125,738,462 shares issued and outstanding at March 31, 2019 and 123,015,301 shares issued and 122,933,845 shares outstanding at December 31, 2018	1	1
Capital in excess of par value	1,584	1,579
Accumulated deficit	(397)	(357)
Accumulated other comprehensive loss	(612)	(540)
Total Tronox Holdings plc shareholders' equity	576	683
Noncontrolling interest	104	179
Total equity	680	862
Total liabilities and equity	$ 4,726	$ 4,642

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - $ / shares	Mar. 31, 2019	Dec. 31, 2018
Shareholders' Equity
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares issued (in shares)	125,738,462	123,015,301
Common stock, shares outstanding (in shares)	125,738,462	122,933,845

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash Flows from Operating Activities:
Net loss	$ (30)	$ (41)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation, depletion and amortization	47	48
Deferred income taxes	(3)	3
Share-based compensation expense	8	7
Amortization of deferred debt issuance costs and discount on debt	2	5
Impairment loss	0	25
Loss on extinguishment of debt	2	0
Other non-cash affecting net loss	6	10
Changes in assets and liabilities:
Decrease in accounts receivable, net	19	1
Increase in inventories, net	(10)	(9)
Increase in prepaid and other assets	(1)	(1)
Increase (decrease) in accounts payable and accrued liabilities	8	(47)
Net changes in income tax payables and receivables	(3)	(2)
Changes in other non-current assets and liabilities	(6)	(3)
Cash provided by (used in) operating activities	39	(4)
Cash Flows from Investing Activities:
Capital expenditures	(25)	(28)
Loans	(25)	0
Cash used in investing activities	(50)	(28)
Cash Flows from Financing Activities:
Repayments of long-term debt	(101)	(6)
Proceeds from Short-term Debt	94	0
Proceeds from long-term debt	222	0
Acquisition of noncontrolling interest	(148)	0
Debt issuance costs	(4)	(1)
Proceeds from the exercise of warrants	0	2
Dividends paid	(7)	(6)
Restricted stock and performance-based shares settled in cash for withholding taxes	(6)	(4)
Cash provided by (used in) financing activities	50	(15)
Effects of exchange rate changes on cash and cash equivalents and restricted cash	(1)	7
Net increase (decrease) in cash, cash equivalents and restricted cash	38	(40)
Cash, cash equivalents and restricted cash at beginning of period	1,696	1,769
Cash, cash equivalents and restricted cash at end of period	$ 1,734	$ 1,729

CONDENSED CONSOLIDATED STATEM_5

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (UNAUDITED) - USD ($) shares in Thousands, $ in Millions	Total Tronox Holdings plc Shareholders' Equity [Member]	Ordinary Shares [Member]	Capital in Excess of par Value [Member]	(Accumulated Deficit) [Member]	Accumulated Other Comprehensive Loss [Member]	Non-controlling Interest [Member]	Total
Balance at Dec. 31, 2017	$ 829	$ 1	$ 1,558	$ (327)	$ (403)	$ 186	$ 1,015
Balance (in shares) at Dec. 31, 2017		121,271
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(44)	$ 0	0	(44)	0	3	(41)
Other comprehensive income (loss)	45	0	0	0	45	15	60
Share-based compensation	7	$ 0	7	0	0	0	7
Share-based compensation (in shares)		1,099
Shares cancelled	(4)	$ 0	(4)	0	0	0	(4)
Shares cancelled (in shares)		(222)
Warrants and options exercised	2	$ 0	2	0	0	0	2
Warrants and options exercised (in shares)		338
Ordinary share dividends ($0.045 per share)	(6)	$ 0	0	(6)	0	0	(6)
Balance at Mar. 31, 2018	829	$ 1	1,563	(377)	(358)	204	1,033
Balance (in shares) at Mar. 31, 2018		122,486
Balance at Dec. 31, 2018	683	$ 1	1,579	(357)	(540)	179	862
Balance (in shares) at Dec. 31, 2018		122,934
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(34)	$ 0	0	(34)	0	4	(30)
Other comprehensive income (loss)	(11)	0	0	0	(11)	11	0
Share-based compensation	8	$ 0	8	0	0	0	8
Share-based compensation (in shares)		3,306
Shares cancelled	(6)	$ 0	(6)	0	0	0	(6)
Shares cancelled (in shares)		(502)
Acquisition of noncontrolling interest	(58)	$ 0	3	0	(61)	(90)	(148)
Ordinary share dividends ($0.045 per share)	(6)	0	0	(6)	0	0	(6)
Balance at Mar. 31, 2019	$ 576	$ 1	$ 1,584	$ (397)	$ (612)	$ 104	$ 680
Balance (in shares) at Mar. 31, 2019		125,738

CONDENSED CONSOLIDATED STATEM_6

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (UNAUDITED) (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY [Abstract]
Dividend paid per share (in dollars per share)	$ 0.045	$ 0.045

The Company

The Company	3 Months Ended
	Mar. 31, 2019
The Company [Abstract]
The Company	1. The Company Prior to March 27, 2019, Tronox Limited was a public limited company registered under the laws of the State of Western Australia. On March 27, 2019, we re-domiciled to the United Kingdom from Australia (“Re-domicile Transaction”) and became Tronox Holdings plc (referred to herein as “Tronox,” “we,” “us,” or “our”), a public limited company registered under the laws of England and Wales. The Re-domicile Transaction was effected by “top-hatting” Tronox Limited with Tronox Holdings plc Class A ordinary shares and Class B ordinary shares of Tronox Limited were exchanged on a 1:1 basis for ordinary shares in Tronox Holdings plc. As a result, the Class A ordinary shares of Tronox Limited were delisted from the New York Stock Exchange (“NYSE”) and the ordinary shares of Tronox Holdings plc were listed on the NYSE in its place. Tronox Limited also became a wholly-owned subsidiary of Tronox Holdings plc following the completion of the re-domiciling transaction. The Re-domicile Transaction had an impact on capital gains tax for our ordinary shares held by Exxaro Resources Limited ( “Exxaro ”) Exxaro Mineral Sands Transaction Completion Agreement” below for a discussion of our agreement with Exxaro associated with South African capital gains tax. Through March 31, 2019, we had global operations in North America, Europe, South Africa, and the Asia-Pacific region and classified our business into one operating segment, which is also our reportable segment, TiO 2. 2 On April 10, 2019, we completed the acquisition of the TiO 2 2 2 2 2 Jazan Slagger and Option Agreement On May 9, 2018, we entered into an Option Agreement (the “Option Agreement”) with Advanced Metal Industries Cluster Company Limited (“AMIC”) pursuant to which AMIC granted us an option (the “Option”) to acquire 90% of a special purpose vehicle (the “SPV”), to which AMIC’s ownership in a titanium slag smelter facility (the “Slagger”) in The Jazan City for Primary and Downstream Industries in KSA will be contributed together with $322 million of AMIC indebtedness (the “AMIC Debt”). As of March 31, 2019, we have loaned $89 million for capital expenditures and operational expenses to facilitate the start-up of the Slagger and we have recorded this loan payment within “Other long-term assets” on the unaudited Condensed Consolidated Balance Sheet at March 31, 2019. The Option Agreement did not have a significant impact on the financial statements as of or for the periods ended March 31, 2019. Exxaro Mineral Sands Transaction Completion Agreement At December 31, 2018, Exxaro held 28.7 million Class B shares of Tronox Limited, or an approximate 23% interest, and those shares were converted to ordinary shares of Tronox when 26% interest in a separate subsidiary based in the U.K. that held intercompany loans with our South African operating subsidiaries. On November 26, 2018, we, certain of our subsidiaries and Exxaro entered into the Exxaro Mineral Sands Transaction Completion Agreement (the “Completion Agreement”). The Completion Agreement provides for the orderly sale of Exxaro’s remaining ownership interest in us during 2019, helped to facilitate the Re-domicile Transaction, as well as addressed several legacy issues related to our 2012 acquisition of Exxaro’s mineral sands business. Pursuant to the terms of the Completion Agreement, on May 9, 2019, we repurchased 14 million shares from Exxaro for an aggregate purchase price of approximately $ 200 million or $14.3185 per The Re-domicile Transaction caused Exxaro to incur approximately $ 5 14 Furthermore, pursuant to the Completion Agreement, the parties agreed to accelerate our purchase of Exxaro’s 26% membership interest in Tronox Sands LLP, a U.K. limited liability partnership (“Tronox Sands”). On February 15, 2019, we completed the redemption of Exxaro’s ownership interest in Tronox Sands for consideration of approximately ZAR 2.06 billion (or approximately $148 million) in cash, which represented Exxaro’s indirect share of the loan accounts in our South African subsidiaries. Following these transactions and in conjunction with the Cristal acquisition, Exxaro continues to own approximately 14.7 million shares of Tronox, or a 9.9% interest, as well as their 26% interest in our South African operating subsidiaries. Basis of Presentation The accompanying condensed consolidated financial statements are unaudited and have been prepared pursuant to the rules and regulations of the U.S. Securities and Exchange Commission regarding interim financial reporting. Accordingly, they do not include all the information and footnotes required by accounting principles generally accepted in the United States of America (“U.S. GAAP”) for complete financial statements and should be read in conjunction with the audited consolidated financial statements and notes thereto included in our Annual Report on Form 10-K/A for the year ended December 31, 2018. The unaudited Condensed Consolidated Balance Sheet as of December 31, 2018 was derived from audited financial statements but does not include all disclosures required by U.S. GAAP. In management’s opinion, the accompanying unaudited condensed consolidated financial statements reflect all adjustments, which are of a normal recurring nature, considered necessary for a fair statement. Our unaudited condensed consolidated financial statements include the accounts of all majority-owned subsidiary companies. All intercompany balances and transactions have been eliminated in consolidation. The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting periods. It is at least reasonably possible that the effect on the financial statements of a change in estimate due to one or more future confirming events could have a material effect on the financial statements. Recently Adopted Accounting Pronouncements In February 2016, the FASB issued ASU 2016-02, Leases (“ASU 2016-02”) which includes a lessee accounting model that recognizes two types of leases - finance leases and operating leases. The new standard requires a lessee to recognize on the balance sheet, for all leases of more than 12 months, a lease liability, which corresponds to the discounted obligation of future lease payments arising from a lease, and a right-of-use (“ROU”) asset, which represents the lessee’s right to use, or control the use of, the underlying asset over the lease term. On January 1, 2019, we adopted the new standard using the cumulative-effect adjustment approach and recorded a lease liability and related right-of-use asset of $66 million and $64 million, respectively. We elected the package of practical expedients under the transition guidance, which does not require the reassessment of whether existing contracts contain a lease or whether the classification or unamortized initial direct costs of existing leases would be different under the new guidance. As an accounting policy election, we excluded short-term leases (leases that have a term of 12 months or less and do not include a purchase option that we are reasonably certain to exercise) from the balance sheet presentation. Additionally, we elected to account for non-lease components in a contract as part of a single lease component for all asset classes. We implemented a new lease management system and updated our business processes and internal controls to address relevant risks associated with the implementation of the new standard including the preparation of the required financial information and disclosures. See Note 14 for details. Recently Issued Accounting Pronouncements In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (“Topic 820”): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement. In August 2018, the FASB also issued ASU 2018-14, Compensation - Retirement Benefits - Defined Benefit Plans - General (Topic 715-20): Disclosure Framework - Changes to the Disclosure Requirements for Defined Benefit Plans.

Cristal Acquisition

Cristal Acquisition	3 Months Ended
	Mar. 31, 2019
Cristal Acquisition [Abstract]
Cristal Acquisition	2. Cristal Acquisition On April 10, 2019 (“Cristal Transaction Date”), we announced the completion of the acquisition of the TiO 2 In order to obtain regulatory approval for the Cristal Transaction, the Federal Trade Commission (“FTC”) required us to divest Cristal’s North American TiO 2 Initially, we intended to divest Cristal’s North American operations to Venator. When we announced the divestiture of the 8120 Grade to Venator on July 16, 2018, we also announced that we had entered into a binding Memorandum of Understanding (“MOU”) with Venator providing for the negotiation in good faith of a definitive agreement to sell the entirety of Cristal’s North American operations to Venator if a divestiture of all or a substantial part of Ashtabula was required to secure final FTC regulatory approval for the Cristal Transaction. The MOU granted Venator exclusivity for a period of 75 days to negotiate a definitive agreement for the sale of the entirety of the Ashtabula complex. The MOU also provided for a $75 million break fee if, among other things, the parties, despite negotiating in good-faith and in conformity with the terms in the MOU, failed to reach a definitive agreement for the sale of Cristal’s North American operations and Tronox was able to consummate both the Cristal Transaction and the paper-laminate grade divestiture to Venator. See Note 16 for a further discussion of the $75 million break fee. We funded the Cristal Transaction through existing cash, borrowings from our Wells Fargo Revolver, and restricted cash borrowed under the Blocked Term Loan which became available to us upon the consummation of the Cristal Transaction. See Note 12 for further details of the Cristal Transaction financing. We will account for the Cristal Transaction under ASC 805, Business Combinations, which requires recording assets and liabilities at fair value. Under the acquisition method of accounting, each tangible and separately identifiable intangible asset acquired and liabilities assumed will be recorded based on their preliminary estimated fair values on the Cristal Transaction Date.

Revenue

Revenue	3 Months Ended
	Mar. 31, 2019
Revenue [Abstract]
Revenue	3. Revenue We recognize revenue at a point in time when the customer obtains control of the promised products. For most transactions this occurs when products are shipped from our manufacturing facilities or at a later point when control of the products transfers to the customer at a specified destination or time. Contract assets represent our rights to consideration in exchange for products that have transferred to a customer when the right is conditional on situations other than the passage of time. For products that we have transferred to our customers, our rights to the consideration are typically unconditional and only the passage of time is required before payments become due. These unconditional rights are recorded as accounts receivable. As of March 31, 2019, and December 31, 2018, we did not have material contract asset balances. Contract liabilities represent our obligations to transfer products to a customer for which we have received consideration from the customer. Infrequently we may receive advance payment from our customers that is accounted for as deferred revenue. Deferred revenue is earned when control of the product transfers to the customer, which is typically within a short period of time from when we received the advanced payment. Contract liability balances as of March 31, 2019 and December 31, 2018 were less than $1 million. Contract liability balances were reported as “Accounts payable” in the unaudited Condensed Consolidated Balance Sheets. All contract liabilities as of March 31, 2018 were recognized as revenue in “Net sales” in the unaudited Condensed Consolidated Statements of Operations during the first quarter of 2019. Disaggregation of Revenue We operate under one operating and reportable segment, TiO 2 Net sales to external customers by geographic areas where our customers are located were as follows: Three Months Ended March 31, 2019 2018 North America $ 138 145 South and Central America 13 16 Europe, Middle-East and Africa 130 146 Asia Pacific 109 135 Total net sales $ 390 $ 442 Net sales from external customers for each similar type of product were as follows: Three Months Ended March 31, 2019 2018 Pigment $ 286 333 Zircon 64 61 Pig iron 19 19 Feedstock and other products 21 17 Electrolytic — 12 Total net sales $ 390 $ 442 Feedstock and other products mainly include rutile prime, ilmenite, Chloride (“CP”) slag and other mining products. Electrolytic products mainly include electrolytic manganese dioxide and boron. We sold our Electrolytic operations on September 1, 2018. The nature, amount, timing and uncertainty of revenue and cash flows typically do not differ significantly among different products.

Asset Sale

Asset Sale	3 Months Ended
	Mar. 31, 2019
Asset Sale [Abstract]
Asset Sale	4. Asset Sale On September 1, 2018, Tronox LLC, our indirect wholly owned subsidiary sold to EMD Acquisition LLC certain of the assets and liabilities of our Henderson Electrolytic Operations based in Henderson, Nevada (the “Henderson Electrolytic Operations”), a component of our TiO 2

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2019
Income Taxes [Abstract]
Income Taxes	5. Income Taxes Our operations are conducted through various subsidiaries in a number of countries throughout the world. We have provided for income taxes based upon the tax laws and rates in the countries in which operations are conducted and income is earned. Income (loss) before income taxes is comprised of the following: Three Months Ended March 31, 2019 2018 Income tax provision $ (2 ) $ (5 ) Loss before income taxes $ (28 ) $ (36 ) Effective tax rate (7 )% (14 )% Tronox Holdings plc, a U.K. corporation, became the public parent during the three months ended March 31, 2019. During the three months ended March 31, 2018, Tronox Limited was the public parent, registered under the laws of the State of Western Australia but managed and controlled in the U.K . The statutory tax rate in the U.K. at both March 31, 2019 and 2018 was 19%. The effective tax rate for both the three months ended March 31, 2019 and 2018 differs from the U.K. statutory rate of 19% primarily due to income and losses in jurisdictions with full valuation allowances, disallowable expenditures, and our jurisdictional mix of income at tax rates different than the U.K. statutory rate. The statutory tax rates on income earned in Australia (30%), the United States (21%), South Africa (28%), and the Netherlands (25%) are higher than the U.K. statutory rate of 19%. The statutory tax rate on income earned in Switzerland (8%) and Jersey (0%) are lower than the U.K. statutory rate of 19%. Also, we continue to maintain a full valuation allowance in the U.S. and Australia. Tax rates will be reduced in the Netherlands and the United Kingdom to 20.5% and 17%, respectively, in future years. As of June 30, 2018, we determined that sufficient positive evidence existed to reverse the valuation allowance attributable to our operating subsidiary in the Netherlands. We continue to maintain full valuation allowances related to the total net deferred tax assets in Australia and the U.S., as we cannot objectively assert that these deferred tax assets are more likely than not to be realized. It is reasonably possible that a portion of these valuation allowances could be reversed within the next year due to increased book profitability levels and the acquisition of the Cristal TiO 2 The Company’s ability to use certain loss and expense carryforwards could be substantially limited if the Company were to experience an ownership change as defined under IRC Section 382. In general, an ownership change would occur if the Company’s “5-percent shareholders,” as defined under IRC Section 382, including certain groups of persons treated as “5-percent shareholders,” collectively increased their ownership in the Company by more than 50 percentage points over a rolling three-year period. If an ownership change does occur during 2019, the resulting impact could be a limitation of up to $5.2 billion composed of both U.S. net operating losses and interest limitation carryforwards. There would be minimal impact on the $2.5 billion future Grantor Trust deductions from an IRC Sections 382 change. We believe that we have made adequate provision for income taxes that may be payable with respect to years open for examination; however, the ultimate outcome is not presently known and, accordingly, adjustments to our provisions may be necessary and/or reclassifications of noncurrent tax liabilities to current may occur in the future.

Loss Per Share

Loss Per Share	3 Months Ended
	Mar. 31, 2019
Loss Per Share [Abstract]
Loss Per Share	6. Loss Per Share The computation of basic and diluted loss per share for the periods indicated is as follows: Three Months Ended March 31, 2019 2018 Numerator – Basic and Diluted: Net loss $ (30 ) $ (41 ) Less: Net income attributable to noncontrolling interest 4 3 Undistributed net loss attributable to Tronox Holdings plc $ (34 ) $ (44 ) Denominator – Basic and Diluted: Weighted-average ordinary shares (in thousands) 124,296 122,327 Net loss per Ordinary Share: Basic and diluted net loss per ordinary share $ (0.27 ) $ (0.36 ) Net loss per ordinary share amounts were calculated from exact, not rounded net loss and share information. Prior to January 2019, we had issued shares of restricted stock which were participating securities that did not have a contractual obligation to share in losses; therefore, when we had a net loss, none of the loss was allocated to participating securities. The restricted stock vested on January 29, 2019. For both the three months ended March 31, 2019 and 2018, the two-class method did not have an effect on our net loss per ordinary share calculation, and as such, dividends paid during these periods did not impact this calculation. In computing diluted net loss per share under the two-class method, we considered potentially dilutive shares. Anti-dilutive shares not recognized in the diluted net loss per share calculation for the three ended March 31, 2019 and 2018 were as follows: March 31, 2019 2018 Options 1,307,735 1,707,133 Restricted share units 5,176,210 5,388,754

Inventories, Net

Inventories, Net	3 Months Ended
	Mar. 31, 2019
Inventories, Net [Abstract]
Inventories, Net	7. Inventories, Net Inventories, net consisted of the following: March 31, 2019 December 31, 2018 Raw materials $ 91 $ 102 Work-in-process 46 43 Finished goods, net 245 225 Materials and supplies, net 104 109 Inventories, net – current $ 486 $ 479 Materials and supplies, net consists of processing chemicals, maintenance supplies, and spare parts, which will be consumed directly and indirectly in the production of our products. At March 31, 2019 and December 31, 2018, inventory obsolescence reserves primarily for materials and supplies were $14 million and $13 million, respectively. Reserves for lower of cost and net realizable value was $17 million each at March 31, 2019 and December 31, 2018.

Property, Plant and Equipment,

Property, Plant and Equipment, Net	3 Months Ended
	Mar. 31, 2019
Property, Plant and Equipment, Net [Abstract]
Property, Plant and Equipment, Net	8. Property, Plant and Equipment, Net Property, plant and equipment, net of accumulated depreciation, consisted of the following: March 31, 2019 December 31, 2018 Land and land improvements $ 96 $ 96 Buildings 245 242 Machinery and equipment 1,415 1,395 Construction-in-progress 55 63 Other 39 39 Subtotal 1,850 1,835 Less: accumulated depreciation (858 ) (831 ) Property, plant and equipment, net (1) $ 992 $ 1,004 Substantially all of the Property, plant and equipment, net is pledged as collateral for our debt. See Note 12. The table below summarizes depreciation expense related to property, plant and equipment for the periods presented, recorded in the specific line items in our unaudited Condensed Consolidated Statements of Operations: Three Months Ended March 31, 2019 2018 Cost of goods sold $ 32 $ 33 Selling, general and administrative expenses 1 1 Total $ 33 $ 34

Mineral Leaseholds, Net

Mineral Leaseholds, Net	3 Months Ended
	Mar. 31, 2019
Mineral Leaseholds, Net [Abstract]
Mineral Leaseholds, Net	9. Mineral Leaseholds, Net Mineral leaseholds, net of accumulated depletion, consisted of the following: March 31, 2019 December 31, 2018 Mineral leaseholds $ 1,237 $ 1,238 Less: accumulated depletion (450 ) (442 ) Mineral leaseholds, net $ 787 $ 796 Depletion expense relating to mineral leaseholds recorded in “Cost of goods sold” in the unaudited Condensed Consolidated Statements of Operations was $8 million, during each of the three months ended March 31, 2019 and 2018.

Intangible Assets, Net

Intangible Assets, Net	3 Months Ended
	Mar. 31, 2019
Intangible Assets, Net [Abstract]
Intangible Assets, Net	10. Intangible Assets, Net Intangible assets, net of accumulated amortization, consisted of the following: March 31, 2019 December 31, 2018 Gross Cost Accumulated Amortization Net Carrying Amount Gross Cost Accumulated Amortization Net Carrying Amount Customer relationships $ 291 $ (158 ) $ 133 $ 291 $ (154 ) $ 137 TiO 2 32 (13 ) 19 32 (13 ) 19 Internal-use software 47 (30 ) 17 47 (27 ) 20 Intangible assets, net $ 370 $ (201 ) $ 169 $ 370 $ (194 ) $ 176 The table below summarizes amortization expense related to intangible assets for the periods presented, recorded in the specific line items in our unaudited Condensed Consolidated Statements of Operations: Three Months Ended March 31, 2019 2018 Cost of goods sold $ — $ — Selling, general and administrative expenses 6 6 Total $ 6 $ 6 Estimated future amortization expense related to intangible assets is $20 million for the remainder of 2019, $26 million for 2020 and 2021, $23 million for 2022, $22 million for 2023 and $52 million thereafter.

Accrued Liabilities

Accrued Liabilities	3 Months Ended
	Mar. 31, 2019
Accrued Liabilities [Abstract]
Accrued Liabilities	11. Accrued Liabilities Accrued liabilities consisted of the following: March 31, 2019 December 31, 2018 Employee-related costs and benefits $ 45 $ 69 Interest 33 16 Sales rebates 15 18 Taxes other than income taxes 7 5 Asset retirement obligations 5 6 Derivatives — 6 Professional fees and other 14 20 Accrued liabilities $ 119 $ 140

Debt

Debt	3 Months Ended
	Mar. 31, 2019
Debt [Abstract]
Debt	12. Debt On March 22, 2019, we entered into a consent and amendment to the global senior secured asset-based syndicated revolving credit facility with Wells Fargo Bank, N.A. (the “Wells Fargo Revolver”), and an amendment to our Term Loan Facility. The purpose of each amendment was to, among other things, (i) permit the refinancing of certain existing indebtedness incurred by our South African subsidiaries, Tronox KZN Sands Proprietary Limited and Tronox Mineral Sands Proprietary Limited, and the proposed uses of proceeds thereof, and (ii) implement required provisions in both the Wells Fargo Revolver and Term Loan Facility necessary in connection with establishment of Tronox Holdings plc. On March 25, 2019, our South African subsidiaries entered into an agreement for a revolving credit facility (the “Standard Bank Revolver”) and a new term loan facility (the “Standard Bank Term Loan”) with The Standard Bank of South Africa Limited as discussed below. Wells Fargo Revolver On September 22, 2017, we entered into a the Wells Fargo Revolver which provided us with up to $550 million of revolving credit lines, with an $85 million sublimit for letters of credit, and has a maturity date of September 22, 2022. Our availability of revolving credit loans and letters of credit is subject to a borrowing base. The Wells Fargo Revolver amendment discussed above also modified certain components of the borrowing base in order to increase the potential availability of credit under the Wells Fargo Revolver. We also voluntarily reduced the revolving credit lines under the Wells Fargo Revolver from $550 million to $350 million. As a result of this modification, we accelerated the recognition of a portion of the deferred financing costs related to the Wells Fargo Revolver and during the three months ended March 31, 2019, recorded a charge of $2 million in “Loss on extinguishment of debt” within the unaudited Condensed Consolidated Statement of Operations. On March 29, 2019, we borrowed $80 million under the Wells Fargo Revolver, and also had $21 million of issued and undrawn letters of credit under the Wells Fargo Revolver, which remained outstanding at March 31, 2019. There were no balances outstanding at December 31, 2018. ABSA Revolving Credit Facility On December 13, 2017, our South African subsidiaries entered into an agreement for a revolving credit facility with ABSA Bank Limited (“ABSA”) acting through its ABSA Capital Division for an amount up to R750 million (approximately $52 million at December 31, 2018 exchange rate) maturing on December 13, 2020 (the “ABSA Revolver”). In connection with the Standard Bank Revolver entered into on March 25, 2019, discussed below, the ABSA Revolver was terminated on March 26, 2019. As a result of the termination, we accelerated the recognition of the remaining deferred financing costs related to the ABSA Revolver during the three months ended March 31, 2019.and recorded less than $1 million in “Loss on extinguishment of debt” within the unaudited Condensed Consolidated Statement of Operations. Standard Bank Credit Facility On March 25, 2019, our South African subsidiaries entered into the Standard Bank Revolver for an amount up to R1 billion (approximately $69 million at March 31, 2019 exchange rate) maturing on March 25, 2022. The Standard Bank Revolver bears interest at the Johannesburg Interbank Average Rate (“JIBAR”) plus 260 basis points when net leverage for our South African subsidiaries (total combined debt outstanding under the Standard Bank Revolver and Standard Bank Term Loan less cash and cash equivalents divided by the consolidated EBITDA) is less than 1.5 and JIBAR plus 285 basis points when net leverage is greater than 1.5. At March 31, 2019, we had R200 million (approximately $14 million at March 31, 2019 exchange rate) in outstanding borrowings on the Standard Bank Revolver. Standard Bank Term Loan Facility On March 25, 2019, our South African subsidiaries, Tronox KZN Sands Proprietary Limited and Tronox Mineral Sands Proprietary Limited, entered into the Standard Bank Term Loan with a maturity date of March 25, 2024. The Term Loan Facility consists of (i) an aggregate principal amount of R2.6 billion (approximately $180 million at March 31, 2019 exchange rate) (“Amortizing Loan”) the principal of which will be paid back at 5 percent per quarter over the five year term of the loan, and (ii) an aggregate principal amount of R600 million (approximately $42 million at March 31, 2019 exchange rate) (“Bullet Loan”) the principal of which will be paid back at the maturity date of the Standard Bank Term Loan. The Amortizing and Bullet Loans bear interest at JIBAR plus 260 basis points and 295 basis points when net leverage South African subsidiaries is less than 1.5 and JIBAR plus 285 basis points and 315 basis points when net leverage is greater than 1.5, respectively. Long-term Debt Long-term debt, net of an unamortized discount and debt issuance costs, consisted of the following: Original Principal Annual Interest Rate Maturity Date March 31, 2019 December 31, 2018 Term Loan Facility, net of unamortized discount (1) (2) $ 2,150 Variable 9/22/2024 $ 2,019 $ 2,119 Senior Notes due 2025 450 5.75 % 10/01/2025 450 450 Senior Notes due 2026 615 6.50 % 4/15/2026 615 615 Standard Bank Term Loan Facility 222 Variable 03/25/2024 222 — Finance leases 15 16 Long-term debt 3,321 3,200 Less: Long-term debt due within one year (58 ) (22 ) Debt issuance costs (40 ) (39 ) Long-term debt, net $ 3,223 $ 3,139 (1) Average effective interest rate of 5.6% and 5.5% during the three months ended March 31, 2019 and 2018, respectively. (2) The Term Loan Facility consists of (i) a U.S. dollar term facility in an aggregate principal amount of $1.5 billion (the “Term Loans”) with our subsidiary, Tronox Finance LLC (“Tronox Finance”) as the borrower and (ii) a U.S. dollar term facility in an aggregate principal amount of $650 million (the “Blocked Term Loan”) with our unrestricted subsidiary, Tronox Blocked Borrower LLC (the “Blocked Borrower”) as the borrower, which Blocked Term Loan was funded into a blocked account. Upon consummation of the Cristal Transaction on April 10, 2019, the Blocked Borrower merged with and into Tronox Finance, and the Blocked Term Loan became available to Tronox Finance. In the event of an asset sale, some or all of the net proceeds from the sale may be required to be used to prepay borrowings under the Term Loan Facility based on the ratio of the total combined debt outstanding under the Term Loan Facility and the Wells Fargo Revolver to the consolidated EBITDA, as defined in the Term Loan Facility, for the previous four quarters. If this ratio is greater than 3, then all of the net proceeds from an asset sale would be required to be used to prepay borrowings under the Term Loan Facility, while if the ratio were less than 3 but greater than 2.75, 50% of the net proceeds would be required for prepayment and if the ratio were less than 2.75, no prepayment would be required.

Fair Value

Fair Value	3 Months Ended
	Mar. 31, 2019
Fair Value [Abstract]
Fair Value	13. Fair Value Our debt is recorded at historical amounts. The following table presents the fair value of our debt at both March 31, 2019 and December 31, 2018: March 31, 2019 December 31, 2018 Term Loan Facility $ 2,013 $ 2,074 Standard Bank Term Loan Facility 222 — Senior Notes due 2025 419 368 Senior Notes due 2026 586 518 We determined the fair value of the Term Loan Facility, the Senior Notes due 2025 and the Senior Notes due 2026 using quoted market prices, which under the fair value hierarchy is a Level 1 input. We determined the fair value of the Standard Bank Term Loan Facility using quoted prices for similar liabilities in active markets, which under the fair value hierarchy is a Level 2 input. Balances outstanding under our Wells Fargo Revolver and Standard Bank Revolver are carried at contractual amounts, which approximate fair value based on the short-term nature of the borrowings and variable interest rates. The fair value hierarchy for both revolvers is a Level 2 input. We enter into foreign currency contracts for the South African rand to reduce exposure of our subsidiaries’ balance sheet accounts not denominated in the functional currency to fluctuations in foreign currency exchange rates. We use a combination of zero-cost collars or forward contracts to reduce the exposure. For accounting purposes, these foreign currency contracts are not considered hedges. The change in fair value associated with these contracts is recorded in “Other expense, net” within the unaudited Condensed Consolidated Statement of Operations and partially offsets the change in value of third party and intercompany-related receivables not denominated in the functional currency of the subsidiary. At March 31, 2019, there was $54 million, in the aggregate, of notional amount outstanding foreign currency contracts with a fair value of a loss of less than $1 million. We determined the fair value of the foreign currency contracts using inputs other than quoted prices in active markets that are observable either directly or indirectly. The fair value hierarchy for the foreign currency contracts is a Level 2 input. For the three months ended March 31, 2019, we have recorded realized and unrealized gains of $5 million related to foreign currency contracts in our unaudited Condensed Consolidated Statement of Operations. The carrying value of cash and cash equivalents, restricted cash, accounts receivable and accounts payable approximate fair value due to the short-term nature of these items.

Leases

Leases	3 Months Ended
	Mar. 31, 2019
Leases [Abstract]
Leases	14. Leases We determine if a contract is or contains a lease at inception of the contract. Our leases are primarily operating leases. Leased assets primarily include office buildings, rail cars and motor vehicles, forklifts, and other machinery and equipment. Our leases primarily have fixed lease payments, with real estate leases typically requiring additional payments for real estate taxes and occupancy-related costs. Our real estate leases typically have initial lease terms ranging from 1 to 19 years, while our non-real estate leases typically have initial lease terms ranging from 1 to 25 years. Some of our lease agreements include options to renew, extend or early terminate the leases. Lease term is the non-cancellable period of a lease, adjusted by the period covered by an option to extend or terminate the lease if we are reasonably certain to exercise that option. Our operating leases typically do not contain purchase options we expect to exercise, residual value guarantees or other material covenants. Operating leases are recorded under “Lease right of use assets”, “Short-term lease liabilities”, and “Long-term lease liabilities”on the unaudited Condensed Consolidated Balance Sheets. Finance leases are recorded under “Property, plant and equipment net”, “ Financial information for the three months ended March 31, 2019 are presented under the new standard, while comparative periods are not required since we adopted the new standard using the cumulative-effect adjustment approach. Lease expenses for the three months ended March 31, 2019 were comprised of the following: March 31, 2019 Operating lease expense $ 7 Finance lease expense: Amortization of right-of-use assets $ — Interest on lease liabilities 1 Short term lease expense 4 Variable lease expense 4 Total lease expense $ 16 The table below summarizes lease expense for the three months ended March 31, 2019, recorded in the specific line items in our unaudited Condensed Consolidated Statements of Operations: March 31, 2019 Cost of goods sold $ 15 Selling, general and administrative expenses 1 Total $ 16 The weighted-average remaining lease term in years and weighted-average discount rates at March 31, 2019 were as follows: March 31, 2019 Weighted-average remaining lease term: Operating leases 4.0 Finance leases 11.3 Weighted-average discount rate: Operating leases 9.6 % Finance leases 14.2 % The maturity analysis for operating leases and finance leases at March 31, 2019 were as follows: Operating Leases Finance Leases 2019 $ 19 $ 2 2020 22 3 2021 16 3 2022 8 3 2023 4 3 Thereafter 8 17 Total lease payments 77 31 Less: imputed interest (14 ) (16 ) Present value of lease payments $ 63 $ 15 The minimum commitments for operating leases and finance leases at December 31, 2018 were as follows: Operating Leases Finance Leases 2019 $ 15 $ 3 2020 6 3 2021 5 3 2022 4 3 2023 3 3 Thereafter 4 18 Total lease payments $ 37 $ 33 Additional information relating to cash flows and ROU assets for the three months ended March 31, 2019 is as follows: March 31, 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows used for operating leases $ 7 Operating cash flows used for finance leases 1 Financing cash flows used for finance leases — Additional information relating to ROU assets for the three months ended March 31, 2019 is as follows: March 31, 2019 ROU assets obtained in exchange for lease obligations: Operating leases $ 3 Finance leases (recorded in “Property, plant, and equipment, net”) —

Asset Retirement Obligations

Asset Retirement Obligations	3 Months Ended
	Mar. 31, 2019
Asset Retirement Obligations [Abstract]
Asset Retirement Obligations	15. Asset Retirement Obligations Asset retirement obligations consist primarily of rehabilitation and restoration costs, landfill capping costs, decommissioning costs, and closure and post-closure costs. Activities related to asset retirement obligations were as follows: Three Months Ended March 31, 2019 2018 Beginning balance $ 74 $ 82 Additions — 4 Accretion expense 1 1 Remeasurement/translation — 1 Settlements/payments — (1 ) Transferred with the sale of Henderson Electrolytic — (4 ) Balance, March 31, $ 75 $ 83 Asset retirement obligations were classified as follows: March 31, 2019 December 31, 2018 Current portion included in “Accrued liabilities” $ 5 $ 6 Noncurrent portion included in “Asset retirement obligations” 70 68 Asset retirement obligations $ 75 $ 74

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2019
Commitments and Contingencies [Abstract]
Commitments and Contingencies	16. Commitments and Contingencies Purchase and Capital Commitments Letters of Credit Other Matters When we announced the divestiture of the 8120 Grade to Venator on July 16, 2018, we also announced that we had entered into a binding Memorandum of Understanding (“MOU”) with Venator providing for the negotiation in good faith of a definitive agreement to sell the entirety of Cristal’s North American operations to Venator if a divestiture of all or a substantial part of Ashtabula was required to secure final FTC regulatory approval for the Cristal Transaction. The MOU also provided for a $75 million break fee if, among other things, the parties, despite negotiating in good-faith and in conformity with the terms in the MOU, failed to reach a definitive agreement for the sale of Cristal’s North American operations and Tronox was able to consummate both the Cristal Transaction and the paper-laminate grade divestiture to Venator. In our opinion, Venator failed to negotiate in good faith to purchase Cristal’s North American operations for $1.1 billion, as contemplated by the MOU, and otherwise failed to comply with the MOU, and therefore we do not believe that the $75 million break fee is payable. While no formal dispute exists today, there is a possibility that we and Venator may litigate to resolve our dispute. Though we believe that our interpretation of the MOU is correct, there can be no assurance that we will prevail in litigation and avoid paying Venator the $75 million break fee.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss Attributable to Tronox Holdings plc	3 Months Ended
	Mar. 31, 2019
Accumulated Other Comprehensive Loss Attributable to Tronox Holdings plc [Abstract]
Accumulated Other Comprehensive Loss Attributable to Tronox Holdings plc	17. Accumulated Other Comprehensive Loss Attributable to Tronox Holdings plc The tables below present changes in accumulated other comprehensive loss by component for the three months ended March 31, 2019 and 2018. Cumulative Translation Adjustment Pension Liability Adjustment Total Balance, January 1, 2019 $ (445 ) $ (95 ) $ (540 ) Other comprehensive loss (11 ) — (11 ) Acquisition of noncontrolling interest (61 ) — (61 ) Balance, March 31, 2019 $ (517 ) $ (95 ) $ (612 ) Cumulative Translation Adjustment Pension Liability Adjustment Unrealized Gains (Losses) on Derivatives Total Balance, January 1, 2018 $ (312 ) $ (90 ) $ (1 ) $ (403 ) Other comprehensive income 44 — — 44 Amounts reclassified from accumulated other comprehensive income (loss) — 1 — 1 Balance, March 31, 2018 $ (268 ) $ (89 ) $ (1 ) $ (358 )

Share-Based Compensation

Share-Based Compensation	3 Months Ended
	Mar. 31, 2019
Share-Based Compensation [Abstract]
Share-Based Compensation	18. Share-Based Compensation Restricted Share Units (“RSUs”) During 2017, a total of 1,397,471 RSUs were granted, pursuant to an Integration Incentive Award program (“Integration Incentive Award”) established in connection with the Cristal Transaction, to certain executive officers and managers with significant integration accountability. In addition, during the second quarter of 2018, an additional 139,225 RSUs were granted under the Integration Incentive Award. These RSUs would have vested two years from the date of the close of the Cristal Transaction and the number of shares that would have been issued to grantees would have been based upon the achievement of established performance conditions. Under the original terms of the Integration Incentive Award, if the Cristal Transaction did not close by July 1, 2018, all unvested awards pursuant to the Integration Incentive Award would immediately be canceled and forfeited. During the second quarter of 2018, terms of the Integration Incentive Award were modified to eliminate the requirement that the Cristal Transaction must close by July 1, 2018. We accounted for this modification as a Type III modification since, at the modification date, the expectation of the award vesting changed from improbable to probable. As a result, we reversed approximately $6 million of previously recorded expense related to the Integration Incentive Award. The issued and unvested RSUs under the Integration Incentive Award were revalued based on the closing price of the Company’s stock on the modification date and will vest on April 10, 2021 (two years from the date the Cristal Transaction closed) and based upon the achievement of established performance conditions. As a result, the estimated expense associated with the revalued award is being expensed over the period from the modification date until April 10, 2021. During the third and fourth quarter of 2018, an additional 90,161 and 40,161 RSUs, respectively, were granted under the modified terms of the Integration Incentive Award. The estimated expense associated with these awards is being recognized over the period from the grant dates until April 10, 2021. During the three months ended March 31, 2019, we granted RSUs which have time and/or performance conditions. Both the time-based awards and the performance-based awards are classified as equity awards. For the time-based awards that are valued at the weighted average grant date fair value, 132,728 RSUs were granted to Board members and vest a year from the date of grant and 1,143,018 RSUs were granted to management and vest ratably over a three-year period. For the performance-based awards, 1,143,018 RSUs were granted to management and cliff vest at the end of the three years. Vesting of the performance-based awards is determined based on a relative Total Stockholder Return (“TSR”) calculation compared to a peer group performance over the applicable three-year measurement period. The Company’s three-year TSR versus the peer group performance levels determines the payout percentage. The TSR metric is considered a market condition for which we use a Monte Carlo simulation to determine the grant date fair value. The unrecognized compensation cost associated with all unvested awards at March 31, 2019 was $66 million, adjusted for estimated forfeitures, which is expected to be recognized over a weighted-average period of approximately 2.0 years. Options There were no options exercised during the three months ended March 31, 2019.

Pension and Other Postretiremen

Pension and Other Postretirement Healthcare Benefits	3 Months Ended
	Mar. 31, 2019
Pension and Other Postretirement Healthcare Benefits [Abstract]
Pension and Other Postretirement Healthcare Benefits	19. Pension and Other Postretirement Healthcare Benefits We sponsor a noncontributory qualified defined benefit retirement plan in the U. S. (the “U.S. Qualified Plan”). We also have a collective defined contribution plan (a multiemployer plan) in the Netherlands (the “Netherlands Multiemployer Plan”) and a postretirement healthcare plan in South Africa (the “SA Postretirement Plan”). The components of net periodic cost associated with our U.S. Qualified Plan recognized in the unaudited Condensed Consolidated Statements of Operations were as follows Three Months Ended March 31, 2019 2018 Net periodic cost: Service cost $ — $ — Interest cost 3 3 Expected return on plan assets (3 ) (4 ) Net amortization of actuarial losses — 1 Total net periodic cost $ — $ — The aggregate impact of interest costs, expected return on plan assets and net amortization of actuarial losses component of net periodic costs for the U.S. Qualified Plan of less than $1 million for each of the three months ended March 31, 2019 and 2018, is presented in “Other expense, net” in the unaudited Condensed Consolidated Statements of Operations. The components of net periodic cost associated with the South Africa postretirement healthcare plan was less than $1 million for each of the three months ended March 31, 2019 and 2018. For each of the three months period ended March 31, 2019 and 2018, we contributed $1 million to the Netherlands Multiemployer Plan, which was primarily recognized in “Cost of goods sold” in the unaudited Condensed Consolidated Statement of Operations.

Related Parties

Related Parties	3 Months Ended
	Mar. 31, 2019
Related Parties [Abstract]
Related Parties	20. Related Parties Exxaro At December 31, 2018, Exxaro held 28.7 million Class B shares of Tronox Limited, or an approximate 23% interest, and those shares were converted to ordinary shares of Tronox when 26% interest in a separate subsidiary based in the U.K. that held intercompany loans with our South African operating subsidiaries. On November 26, 2018, we entered into the Completion Agreement with Exxaro that provides for the orderly sale of Exxaro’s remaining ownership interest in us during 2019, helped to facilitate the Re-domicile Transaction, and addressed several legacy issues related to our 2012 acquisition of Exxaro’s mineral sands business. P On May 9, 2019, we repurchased approximately 14 200 million or $14.3185 per The Re-domicile Transaction caused Exxaro to incur a liability for approximately $ 5 14 Following these transactions and in conjunction with the Cristal acquisition, Exxaro continues to own approximately 14.7 million shares of Tronox, or a 9.9% interest, as well as their 26% interest in our South African operating subsidiaries.

Segment Information

Segment Information	3 Months Ended
	Mar. 31, 2019
Segment Information [Abstract]
Segment Information	21. Segment Information We operate our business under one operating segment, TiO 2, 2 We disaggregate our revenue from contracts with customers by product type and geographic area. We believe this level of disaggregation appropriately depicts how the nature, amount, timing and uncertainty of our revenue and cash flows are affected by economic factors and reflects how our business is managed. See Note 3 for further information on revenues.

Subsequent Events

Subsequent Events	3 Months Ended
	Mar. 31, 2019
Subsequent Events [Abstract]
Subsequent Events	22. Subsequent Events On April 10, 2019 (“Cristal Transaction Date”), we announced the completion of the acquisition of the TiO 2 In order to obtain regulatory approval for the Cristal Transaction, the Federal Trade Commission (“FTC”) required us to divest Cristal’s North American TiO 2 On May 9, 2019, we repurchased 14 200 million or $14.3185 per 14

The Company (Policies)

The Company (Policies)	3 Months Ended
	Mar. 31, 2019
The Company [Abstract]
Basis of Presentation	Basis of Presentation The accompanying condensed consolidated financial statements are unaudited and have been prepared pursuant to the rules and regulations of the U.S. Securities and Exchange Commission regarding interim financial reporting. Accordingly, they do not include all the information and footnotes required by accounting principles generally accepted in the United States of America (“U.S. GAAP”) for complete financial statements and should be read in conjunction with the audited consolidated financial statements and notes thereto included in our Annual Report on Form 10-K/A for the year ended December 31, 2018. The unaudited Condensed Consolidated Balance Sheet as of December 31, 2018 was derived from audited financial statements but does not include all disclosures required by U.S. GAAP. In management’s opinion, the accompanying unaudited condensed consolidated financial statements reflect all adjustments, which are of a normal recurring nature, considered necessary for a fair statement. Our unaudited condensed consolidated financial statements include the accounts of all majority-owned subsidiary companies. All intercompany balances and transactions have been eliminated in consolidation. The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting periods. It is at least reasonably possible that the effect on the financial statements of a change in estimate due to one or more future confirming events could have a material effect on the financial statements.
Recently Adopted Accounting Pronouncements	Recently Adopted Accounting Pronouncements In February 2016, the FASB issued ASU 2016-02, Leases (“ASU 2016-02”) which includes a lessee accounting model that recognizes two types of leases - finance leases and operating leases. The new standard requires a lessee to recognize on the balance sheet, for all leases of more than 12 months, a lease liability, which corresponds to the discounted obligation of future lease payments arising from a lease, and a right-of-use (“ROU”) asset, which represents the lessee’s right to use, or control the use of, the underlying asset over the lease term. On January 1, 2019, we adopted the new standard using the cumulative-effect adjustment approach and recorded a lease liability and related right-of-use asset of $66 million and $64 million, respectively. We elected the package of practical expedients under the transition guidance, which does not require the reassessment of whether existing contracts contain a lease or whether the classification or unamortized initial direct costs of existing leases would be different under the new guidance. As an accounting policy election, we excluded short-term leases (leases that have a term of 12 months or less and do not include a purchase option that we are reasonably certain to exercise) from the balance sheet presentation. Additionally, we elected to account for non-lease components in a contract as part of a single lease component for all asset classes. We implemented a new lease management system and updated our business processes and internal controls to address relevant risks associated with the implementation of the new standard including the preparation of the required financial information and disclosures. See Note 14 for details.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (“Topic 820”): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement. In August 2018, the FASB also issued ASU 2018-14, Compensation - Retirement Benefits - Defined Benefit Plans - General (Topic 715-20): Disclosure Framework - Changes to the Disclosure Requirements for Defined Benefit Plans.

Revenue (Tables)

Revenue (Tables)	3 Months Ended
	Mar. 31, 2019
Revenue [Abstract]
Disaggregation of Revenue	Net sales to external customers by geographic areas where our customers are located were as follows: Three Months Ended March 31, 2019 2018 North America $ 138 145 South and Central America 13 16 Europe, Middle-East and Africa 130 146 Asia Pacific 109 135 Total net sales $ 390 $ 442 Net sales from external customers for each similar type of product were as follows: Three Months Ended March 31, 2019 2018 Pigment $ 286 333 Zircon 64 61 Pig iron 19 19 Feedstock and other products 21 17 Electrolytic — 12 Total net sales $ 390 $ 442

Income Taxes (Tables)

Income Taxes (Tables)	3 Months Ended
	Mar. 31, 2019
Income Taxes [Abstract]
Income Taxes	Income (loss) before income taxes is comprised of the following: Three Months Ended March 31, 2019 2018 Income tax provision $ (2 ) $ (5 ) Loss before income taxes $ (28 ) $ (36 ) Effective tax rate (7 )% (14 )%

Loss Per Share (Tables)

Loss Per Share (Tables)	3 Months Ended
	Mar. 31, 2019
Loss Per Share [Abstract]
Computation of Basic and Diluted Loss per Share	The computation of basic and diluted loss per share for the periods indicated is as follows: Three Months Ended March 31, 2019 2018 Numerator – Basic and Diluted: Net loss $ (30 ) $ (41 ) Less: Net income attributable to noncontrolling interest 4 3 Undistributed net loss attributable to Tronox Holdings plc $ (34 ) $ (44 ) Denominator – Basic and Diluted: Weighted-average ordinary shares (in thousands) 124,296 122,327 Net loss per Ordinary Share: Basic and diluted net loss per ordinary share $ (0.27 ) $ (0.36 )
Anti-Dilutive Shares Not Recognized in Diluted Earnings per Share Calculation	Anti-dilutive shares not recognized in the diluted net loss per share calculation for the three ended March 31, 2019 and 2018 were as follows: March 31, 2019 2018 Options 1,307,735 1,707,133 Restricted share units 5,176,210 5,388,754

Inventories, Net (Tables)

Inventories, Net (Tables)	3 Months Ended
	Mar. 31, 2019
Inventories, Net [Abstract]
Inventories, Net	Inventories, net consisted of the following: March 31, 2019 December 31, 2018 Raw materials $ 91 $ 102 Work-in-process 46 43 Finished goods, net 245 225 Materials and supplies, net 104 109 Inventories, net – current $ 486 $ 479

Property, Plant and Equipment_2

Property, Plant and Equipment, Net (Tables)	3 Months Ended
	Mar. 31, 2019
Property, Plant and Equipment, Net [Abstract]
Property, Plant and Equipment, Net of Accumulated Depreciation	Property, plant and equipment, net of accumulated depreciation, consisted of the following: March 31, 2019 December 31, 2018 Land and land improvements $ 96 $ 96 Buildings 245 242 Machinery and equipment 1,415 1,395 Construction-in-progress 55 63 Other 39 39 Subtotal 1,850 1,835 Less: accumulated depreciation (858 ) (831 ) Property, plant and equipment, net (1) $ 992 $ 1,004
Depreciation Expense Related to Property Plant and Equipment	The table below summarizes depreciation expense related to property, plant and equipment for the periods presented, recorded in the specific line items in our unaudited Condensed Consolidated Statements of Operations: Three Months Ended March 31, 2019 2018 Cost of goods sold $ 32 $ 33 Selling, general and administrative expenses 1 1 Total $ 33 $ 34

Mineral Leaseholds, Net (Tables

Mineral Leaseholds, Net (Tables)	3 Months Ended
	Mar. 31, 2019
Mineral Leaseholds, Net [Abstract]
Mineral Leaseholds, Net of Accumulated Depletion	Mineral leaseholds, net of accumulated depletion, consisted of the following: March 31, 2019 December 31, 2018 Mineral leaseholds $ 1,237 $ 1,238 Less: accumulated depletion (450 ) (442 ) Mineral leaseholds, net $ 787 $ 796

Intangible Assets, Net (Tables)

Intangible Assets, Net (Tables)	3 Months Ended
	Mar. 31, 2019
Intangible Assets, Net [Abstract]
Intangible Assets, Net of Accumulated Amortization	Intangible assets, net of accumulated amortization, consisted of the following: March 31, 2019 December 31, 2018 Gross Cost Accumulated Amortization Net Carrying Amount Gross Cost Accumulated Amortization Net Carrying Amount Customer relationships $ 291 $ (158 ) $ 133 $ 291 $ (154 ) $ 137 TiO 2 32 (13 ) 19 32 (13 ) 19 Internal-use software 47 (30 ) 17 47 (27 ) 20 Intangible assets, net $ 370 $ (201 ) $ 169 $ 370 $ (194 ) $ 176
Amortization Expense Related to Intangible Assets	The table below summarizes amortization expense related to intangible assets for the periods presented, recorded in the specific line items in our unaudited Condensed Consolidated Statements of Operations: Three Months Ended March 31, 2019 2018 Cost of goods sold $ — $ — Selling, general and administrative expenses 6 6 Total $ 6 $ 6

Accrued Liabilities (Tables)

Accrued Liabilities (Tables)	3 Months Ended
	Mar. 31, 2019
Accrued Liabilities [Abstract]
Accrued Liabilities	Accrued liabilities consisted of the following: March 31, 2019 December 31, 2018 Employee-related costs and benefits $ 45 $ 69 Interest 33 16 Sales rebates 15 18 Taxes other than income taxes 7 5 Asset retirement obligations 5 6 Derivatives — 6 Professional fees and other 14 20 Accrued liabilities $ 119 $ 140

Debt (Tables)

Debt (Tables)	3 Months Ended
	Mar. 31, 2019
Debt [Abstract]
Long-Term Debt, Net of Unamortized Discount and Debt Issuance Costs	Long-term debt, net of an unamortized discount and debt issuance costs, consisted of the following: Original Principal Annual Interest Rate Maturity Date March 31, 2019 December 31, 2018 Term Loan Facility, net of unamortized discount (1) (2) $ 2,150 Variable 9/22/2024 $ 2,019 $ 2,119 Senior Notes due 2025 450 5.75 % 10/01/2025 450 450 Senior Notes due 2026 615 6.50 % 4/15/2026 615 615 Standard Bank Term Loan Facility 222 Variable 03/25/2024 222 — Finance leases 15 16 Long-term debt 3,321 3,200 Less: Long-term debt due within one year (58 ) (22 ) Debt issuance costs (40 ) (39 ) Long-term debt, net $ 3,223 $ 3,139 (1) Average effective interest rate of 5.6% and 5.5% during the three months ended March 31, 2019 and 2018, respectively. (2) The Term Loan Facility consists of (i) a U.S. dollar term facility in an aggregate principal amount of $1.5 billion (the “Term Loans”) with our subsidiary, Tronox Finance LLC (“Tronox Finance”) as the borrower and (ii) a U.S. dollar term facility in an aggregate principal amount of $650 million (the “Blocked Term Loan”) with our unrestricted subsidiary, Tronox Blocked Borrower LLC (the “Blocked Borrower”) as the borrower, which Blocked Term Loan was funded into a blocked account. Upon consummation of the Cristal Transaction on April 10, 2019, the Blocked Borrower merged with and into Tronox Finance, and the Blocked Term Loan became available to Tronox Finance. In the event of an asset sale, some or all of the net proceeds from the sale may be required to be used to prepay borrowings under the Term Loan Facility based on the ratio of the total combined debt outstanding under the Term Loan Facility and the Wells Fargo Revolver to the consolidated EBITDA, as defined in the Term Loan Facility, for the previous four quarters. If this ratio is greater than 3, then all of the net proceeds from an asset sale would be required to be used to prepay borrowings under the Term Loan Facility, while if the ratio were less than 3 but greater than 2.75, 50% of the net proceeds would be required for prepayment and if the ratio were less than 2.75, no prepayment would be required.

Fair Value (Tables)

Fair Value (Tables)	3 Months Ended
	Mar. 31, 2019
Fair Value [Abstract]
Fair Value Measurement of Debt	The following table presents the fair value of our debt at both March 31, 2019 and December 31, 2018: March 31, 2019 December 31, 2018 Term Loan Facility $ 2,013 $ 2,074 Standard Bank Term Loan Facility 222 — Senior Notes due 2025 419 368 Senior Notes due 2026 586 518

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2019
Leases [Abstract]
Lease Expenses	Lease expenses for the three months ended March 31, 2019 were comprised of the following: March 31, 2019 Operating lease expense $ 7 Finance lease expense: Amortization of right-of-use assets $ — Interest on lease liabilities 1 Short term lease expense 4 Variable lease expense 4 Total lease expense $ 16 The table below summarizes lease expense for the three months ended March 31, 2019, recorded in the specific line items in our unaudited Condensed Consolidated Statements of Operations: March 31, 2019 Cost of goods sold $ 15 Selling, general and administrative expenses 1 Total $ 16
Weighted-Average Remaining Lease Term and Weighted-Average Discount Rates	The weighted-average remaining lease term in years and weighted-average discount rates at March 31, 2019 were as follows: March 31, 2019 Weighted-average remaining lease term: Operating leases 4.0 Finance leases 11.3 Weighted-average discount rate: Operating leases 9.6 % Finance leases 14.2 %
Maturity Analysis for Operating Leases and Finance Leases	The maturity analysis for operating leases and finance leases at March 31, 2019 were as follows: Operating Leases Finance Leases 2019 $ 19 $ 2 2020 22 3 2021 16 3 2022 8 3 2023 4 3 Thereafter 8 17 Total lease payments 77 31 Less: imputed interest (14 ) (16 ) Present value of lease payments $ 63 $ 15
Minimum Commitments for Operating Leases and Finance Leases	The minimum commitments for operating leases and finance leases at December 31, 2018 were as follows: Operating Leases Finance Leases 2019 $ 15 $ 3 2020 6 3 2021 5 3 2022 4 3 2023 3 3 Thereafter 4 18 Total lease payments $ 37 $ 33
Cash Flows and ROU Assets	Additional information relating to cash flows and ROU assets for the three months ended March 31, 2019 is as follows: March 31, 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows used for operating leases $ 7 Operating cash flows used for finance leases 1 Financing cash flows used for finance leases — Additional information relating to ROU assets for the three months ended March 31, 2019 is as follows: March 31, 2019 ROU assets obtained in exchange for lease obligations: Operating leases $ 3 Finance leases (recorded in “Property, plant, and equipment, net”) —

Asset Retirement Obligations (T

Asset Retirement Obligations (Tables)	3 Months Ended
	Mar. 31, 2019
Asset Retirement Obligations [Abstract]
Asset Retirement Obligations	Activities related to asset retirement obligations were as follows: Three Months Ended March 31, 2019 2018 Beginning balance $ 74 $ 82 Additions — 4 Accretion expense 1 1 Remeasurement/translation — 1 Settlements/payments — (1 ) Transferred with the sale of Henderson Electrolytic — (4 ) Balance, March 31, $ 75 $ 83 Asset retirement obligations were classified as follows: March 31, 2019 December 31, 2018 Current portion included in “Accrued liabilities” $ 5 $ 6 Noncurrent portion included in “Asset retirement obligations” 70 68 Asset retirement obligations $ 75 $ 74

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss Attributable to Tronox Holdings plc (Tables)	3 Months Ended
	Mar. 31, 2019
Accumulated Other Comprehensive Loss Attributable to Tronox Holdings plc [Abstract]
Changes in Accumulated Other Comprehensive Income (Loss) by Component	The tables below present changes in accumulated other comprehensive loss by component for the three months ended March 31, 2019 and 2018. Cumulative Translation Adjustment Pension Liability Adjustment Total Balance, January 1, 2019 $ (445 ) $ (95 ) $ (540 ) Other comprehensive loss (11 ) — (11 ) Acquisition of noncontrolling interest (61 ) — (61 ) Balance, March 31, 2019 $ (517 ) $ (95 ) $ (612 ) Cumulative Translation Adjustment Pension Liability Adjustment Unrealized Gains (Losses) on Derivatives Total Balance, January 1, 2018 $ (312 ) $ (90 ) $ (1 ) $ (403 ) Other comprehensive income 44 — — 44 Amounts reclassified from accumulated other comprehensive income (loss) — 1 — 1 Balance, March 31, 2018 $ (268 ) $ (89 ) $ (1 ) $ (358 )

Pension and Other Postretirem_2

Pension and Other Postretirement Healthcare Benefits (Tables)	3 Months Ended
	Mar. 31, 2019
Pension and Other Postretirement Healthcare Benefits [Abstract]
Net Periodic Cost Associated with the U.S. Defined Benefit Plans and The Netherlands Defined Plan	The components of net periodic cost associated with our U.S. Qualified Plan recognized in the unaudited Condensed Consolidated Statements of Operations were as follows Three Months Ended March 31, 2019 2018 Net periodic cost: Service cost $ — $ — Interest cost 3 3 Expected return on plan assets (3 ) (4 ) Net amortization of actuarial losses — 1 Total net periodic cost $ — $ —

The Company (Details)

The Company (Details) $ / shares in Units, shares in Millions, R in Millions, $ in Millions	May 09, 2019USD ($)$ / sharesshares	Feb. 15, 2019USD ($)	Feb. 15, 2019ZAR (R)	Nov. 30, 2018	Mar. 31, 2019USD ($)SegmentFacilityOperationshares	Dec. 31, 2018USD ($)shares	Nov. 26, 2018	May 09, 2018USD ($)	Mar. 31, 2018USD ($)
The Company [Abstract]
Ratio of ordinary shares issued upon transition				1
Number of reporting segments | Segment					1
Number of mining operations | Operation					3
Lease liability					$ 63
Right-of-use asset					62	$ 0
ASU 2016-02 [Member]
The Company [Abstract]
Lease liability						66
Right-of-use asset						$ 64
Exxaro [Member]
The Company [Abstract]
Related-party accrued liabilities					$ 1				$ 1
Exxaro [Member] | Exxaro Mineral Sands Transaction Completion Agreement [Member] | Subsequent Event [Member]
The Company [Abstract]
Stock repurchased (in shares) | shares	14
Stock repurchased, aggregate purchase price	$ 200
Stock repurchased, price per share (in dollars per share) | $ / shares	$ 14.3185
Discount percentage on volume weighted average share price	5.00%
Number of weighted average days	10 days
Capital gains tax	$ 5
Ownership interest	9.90%
TiO2 Segment [Member] | Pigment [Member]
The Company [Abstract]
Number of production facilities | Facility					3
Class B [Member] | Exxaro [Member]
The Company [Abstract]
Ownership interest						23.00%
Number of shares held by affiliate (in shares) | shares						28.7
Tronox Sands [Member] | Exxaro [Member]
The Company [Abstract]
Ownership interest							26.00%
Cash consideration for acquisition		$ 148	R 2,060
South African Subsidiaries [Member] | Exxaro [Member]
The Company [Abstract]
Ownership interest						26.00%
U.K. Subsidiary [Member] | Exxaro [Member]
The Company [Abstract]
Ownership interest						26.00%
Slagger [Member] | Advanced Metal Industries Cluster Company Limited [Member]
The Company [Abstract]
Ownership interest								90.00%
Debt outstanding								$ 322
Loan commitment								$ 89
Cristal Acquisition [Member] | Exxaro [Member]
The Company [Abstract]
Ownership interest					9.90%
Number of shares held by affiliate (in shares) | shares					14.7

Cristal Acquisition (Details)

Cristal Acquisition (Details) $ / shares in Units, € in Millions, $ in Millions	May 01, 2019USD ($)	Apr. 26, 2019EUR (€)	Apr. 10, 2019USD ($)$ / sharesshares	Jul. 16, 2018USD ($)	Jun. 30, 2019USD ($)
Cristal's North American Operations [Member] | Forecast [Member]
Business Acquisition [Abstract]
Loss on sale of business					$ (19)
Cristal's North American Operations [Member] | Subsequent Event [Member]
Business Acquisition [Abstract]
Proceeds from divestiture of operations	$ 700
Venator Materials PLC [Member] | Subsequent Event [Member]
Business Acquisition [Abstract]
Total cash consideration | €		€ 8
Proceeds from divestiture of operations | €		€ 1
Supply agreement term		2 years
Consideration amount receivable | €		€ 7
Venator Materials PLC [Member] | Subsequent Event [Member] | Maximum [Member]
Business Acquisition [Abstract]
Supply agreement extendable term		3 years
Venator Materials PLC [Member] | Ashtabula [Member]
Business Acquisition [Abstract]
Definitive agreement negotiation period				75 days
Break Fee				$ 75
Cristal's Titanium Dioxide Business [Member] | Subsequent Event [Member]
Business Acquisition [Abstract]
Cash consideration for acquisition			$ 1,673
Number of ordinary shares to be issued for acquisition (in shares) | shares			37,580,000
Share value at acquisition closing date (in dollars per shares) | $ / shares			$ 14
Total consideration for acquisition			$ 2,200

Revenue (Details)

Revenue (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019USD ($)Segment	Mar. 31, 2018USD ($)	Dec. 31, 2018USD ($)
Disaggregation of Revenue [Abstract]
Number of operating segments | Segment	1
Number of reportable segments | Segment	1
Net sales	$ 390	$ 442
Maximum [Member]
Contract Balances [Abstract]
Contract liability balances	1		$ 1
Pigment [Member]
Disaggregation of Revenue [Abstract]
Net sales	286	333
Zircon [Member]
Disaggregation of Revenue [Abstract]
Net sales	64	61
Pig Iron [Member]
Disaggregation of Revenue [Abstract]
Net sales	19	19
Feedstock and Other Products [Member]
Disaggregation of Revenue [Abstract]
Net sales	21	17
Electrolytic [Member]
Disaggregation of Revenue [Abstract]
Net sales	0	12
North America [Member]
Disaggregation of Revenue [Abstract]
Net sales	138	145
South and Central America [Member]
Disaggregation of Revenue [Abstract]
Net sales	13	16
Europe, Middle-East and Africa [Member]
Disaggregation of Revenue [Abstract]
Net sales	130	146
Asia Pacific [Member]
Disaggregation of Revenue [Abstract]
Net sales	$ 109	$ 135

Asset Sale (Details)

Asset Sale (Details) - Henderson Electrolytic Operations [Member] - USD ($) $ in Millions	Dec. 27, 2018	Sep. 30, 2018	Mar. 31, 2018	Dec. 31, 2018	Mar. 31, 2019
Assets [Abstract]
Amount of consideration received in cash		$ 1.3		$ 13	$ 6
Amount of secured promissory note		4.7
Proceeds from full settlement of promissory note	$ 4.7
Pre-tax loss on sale of assets		$ 6	$ 25	$ 31

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2020
Income Taxes [Abstract]
Income tax provision	$ (2)	$ (5)
Loss before income taxes	$ (28)	$ (36)
Effective tax rate	(7.00%)	(14.00%)
Income Taxes [Abstract]
Future Grantor Trust deductions	$ 2,500
Maximum [Member]
Income Taxes [Abstract]
Net operating losses and interest limitation carryforwards subject to limitation upon ownership change	$ 5,200
United Kingdom [Member] | Domestic Tax Authority [Member]
Income Taxes [Abstract]
Statutory tax rate	19.00%	19.00%
United Kingdom [Member] | Domestic Tax Authority [Member] | Forecast [Member]
Income Taxes [Abstract]
Statutory tax rate			17.00%
U.S. Federal [Member]
Income Taxes [Abstract]
Statutory tax rate	21.00%
Australia [Member] | Domestic Tax Authority [Member]
Income Taxes [Abstract]
Statutory tax rate	30.00%
South Africa [Member] | Foreign Tax Authority [Member]
Income Taxes [Abstract]
Statutory tax rate	28.00%
Netherlands [Member] | Foreign Tax Authority [Member]
Income Taxes [Abstract]
Statutory tax rate	25.00%
Netherlands [Member] | Foreign Tax Authority [Member] | Forecast [Member]
Income Taxes [Abstract]
Statutory tax rate			20.50%
Switzerland [Member] | Foreign Tax Authority [Member]
Income Taxes [Abstract]
Statutory tax rate	8.00%
Jersey, U.K. [Member] | Foreign Tax Authority [Member]
Income Taxes [Abstract]
Statutory tax rate	0.00%

Loss Per Share, Computation of

Loss Per Share, Computation of Basic and Diluted Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Numerator - Basic and Diluted [Abstract]
Net loss	$ (30)	$ (41)
Less: Net income attributable to noncontrolling interest	4	3
Undistributed net loss attributable to Tronox Holdings plc	$ (34)	$ (44)
Denominator - Basic and Diluted [Abstract]
Weighted-average ordinary shares (in shares)	124,296	122,327
Net loss per Ordinary Share [Abstract]
Basic and diluted net loss per ordinary share (in dollars per share)	$ (0.27)	$ (0.36)

Loss Per Share, Computation o_2

Loss Per Share, Computation of Anti-Dilutive Shares (Details) - shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Options [Member]
Anti-dilutive shares not recognized in diluted net income (loss) per share calculation [Abstract]
Shares (in shares)	1,307,735	1,707,133
Restricted Share Units [Member]
Anti-dilutive shares not recognized in diluted net income (loss) per share calculation [Abstract]
Shares (in shares)	5,176,210	5,388,754

Inventories, Net (Details)

Inventories, Net (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Components of inventories [Abstract]
Raw materials	$ 91	$ 102
Work-in-process	46	43
Finished goods, net	245	225
Materials and supplies, net	104	109
Inventories, net - current	486	479
Inventory obsolescence reserves	14	13
Reserves for lower of cost and net realizable value	$ 17	$ 17

Property, Plant and Equipment_3

Property, Plant and Equipment, Net (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Property, plant and equipment, net of accumulated depreciation [Abstract]
Subtotal	$ 1,850		$ 1,835
Less: accumulated depreciation	(858)		(831)
Property, plant and equipment, net	992		1,004
Depreciation expense related to property plant and equipment [Abstract]
Depreciation expense	33	$ 34
Cost of Goods Sold [Member]
Depreciation expense related to property plant and equipment [Abstract]
Depreciation expense	32	33
Selling, General and Administrative Expenses [Member]
Depreciation expense related to property plant and equipment [Abstract]
Depreciation expense	1	$ 1
Land and Land Improvements [Member]
Property, plant and equipment, net of accumulated depreciation [Abstract]
Subtotal	96		96
Buildings [Member]
Property, plant and equipment, net of accumulated depreciation [Abstract]
Subtotal	245		242
Machinery and Equipment [Member]
Property, plant and equipment, net of accumulated depreciation [Abstract]
Subtotal	1,415		1,395
Construction-in-Progress [Member]
Property, plant and equipment, net of accumulated depreciation [Abstract]
Subtotal	55		63
Other [Member]
Property, plant and equipment, net of accumulated depreciation [Abstract]
Subtotal	$ 39		$ 39

Mineral Leaseholds, Net (Detail

Mineral Leaseholds, Net (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Summary of minerals leaseholds, net of accumulated depletion [Abstract]
Mineral leaseholds	$ 1,237		$ 1,238
Less: accumulated depletion	(450)		(442)
Mineral leaseholds, net	787		$ 796
Depletion expense relating to mineral leaseholds recorded in cost of goods sold	$ 8	$ 8

Intangible Assets, Net (Details

Intangible Assets, Net (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Intangible assets, net of accumulated amortization [Abstract]
Gross cost	$ 370		$ 370
Accumulated amortization	(201)		(194)
Net carrying amount	169		176
Amortization expense related to intangible assets [Abstract]
Amortization expense	6	$ 6
Estimated future amortization expense related to intangible assets [Abstract]
Remainder of 2019	20
2020	26
2021	26
2022	23
2023	22
Thereafter	52
Cost of Goods Sold [Member]
Amortization expense related to intangible assets [Abstract]
Amortization expense	0	0
Selling, General and Administrative Expenses [Member]
Amortization expense related to intangible assets [Abstract]
Amortization expense	6	$ 6
Customer Relationships [Member]
Intangible assets, net of accumulated amortization [Abstract]
Gross cost	291		291
Accumulated amortization	(158)		(154)
Net carrying amount	133		137
TiO2 Technology [Member]
Intangible assets, net of accumulated amortization [Abstract]
Gross cost	32		32
Accumulated amortization	(13)		(13)
Net carrying amount	19		19
Internal-use Software [Member]
Intangible assets, net of accumulated amortization [Abstract]
Gross cost	47		47
Accumulated amortization	(30)		(27)
Net carrying amount	$ 17		$ 20

Accrued Liabilities (Details)

Accrued Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Summary of accrued liabilities [Abstract]
Employee-related costs and benefits	$ 45	$ 69
Interest	33	16
Sales rebates	15	18
Taxes other than income taxes	7	5
Asset retirement obligations	5	6
Derivatives	0	6
Professional fees and other	14	20
Accrued liabilities	$ 119	$ 140

Debt, Wells Fargo Revolver and

Debt, Wells Fargo Revolver and ABSA Revolving Credit Facility (Details) R in Millions, $ in Millions	Mar. 29, 2019USD ($)	Mar. 31, 2019USD ($)	Mar. 31, 2018USD ($)	Mar. 31, 2019ZAR (R)	Dec. 31, 2018USD ($)	Sep. 22, 2017USD ($)
Long-term Debt [Abstract]
Debt extinguishment costs		$ (2)	$ 0
Wells Fargo Revolver [Member] | Letter of Credit [Member]
Long-term Debt [Abstract]
Maximum borrowing capacity						$ 85
Maturity date of revolving credit facility		Sep. 22, 2022
Letters of credit issued and undrawn	$ 21
Wells Fargo Revolver [Member] | Revolving Credit Facility [Member]
Long-term Debt [Abstract]
Maximum borrowing capacity		$ 350				$ 550
Proceeds from line of credit	$ 80
Debt extinguishment costs		2
Outstanding borrowings on revolvers					$ 0
ABSA Revolver [Member]
Long-term Debt [Abstract]
Maximum borrowing capacity		$ 52		R 750
Maturity date of revolving credit facility		Dec. 13, 2020
ABSA Revolver [Member] | Maximum [Member]
Long-term Debt [Abstract]
Debt extinguishment costs		$ 1

Debt, Standard Bank Credit Faci

Debt, Standard Bank Credit Facility and Standard Bank Term Loan Facility (Details) R in Millions, $ in Millions	Mar. 25, 2019ZAR (R)	Mar. 31, 2019USD ($)	Mar. 31, 2019ZAR (R)
Standard Bank Credit Facility [Member]
Long-term Debt [Abstract]
Maximum borrowing capacity	R 1,000	$ 69
Maturity date		Mar. 25, 2022
Outstanding borrowings on revolvers		$ 14	R 200
Standard Bank Credit Facility [Member] | JIBAR [Member]
Long-term Debt [Abstract]
Basis spread on variable interest rate when net leverage ratio is less than 1.5	2.60%
Basis spread on variable interest rate when net leverage ratio is greater than 1.5	2.85%
Standard Bank Term Loan Facility [Member]
Long-term Debt [Abstract]
Maturity date		Mar. 25, 2024
Amortizing Loan [Member]
Long-term Debt [Abstract]
Maximum borrowing capacity	R 2,600	$ 180
Debt instrument, term	5 years
Frequency of payments		Quarter
Periodic payment of principal	5.00%
Amortizing Loan [Member] | JIBAR [Member]
Long-term Debt [Abstract]
Basis spread on variable interest rate when net leverage ratio is less than 1.5	2.60%
Basis spread on variable interest rate when net leverage ratio is greater than 1.5	2.85%
Bullet Loan [Member]
Long-term Debt [Abstract]
Outstanding borrowings on revolvers	R 600	$ 42
Bullet Loan [Member] | JIBAR [Member]
Long-term Debt [Abstract]
Basis spread on variable interest rate when net leverage ratio is less than 1.5	2.95%
Basis spread on variable interest rate when net leverage ratio is greater than 1.5	3.15%

Debt, Long-Term Debt, Net of Un

Debt, Long-Term Debt, Net of Unamortized Discount and Debt Issuance Costs (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Long-term debt, net of an unamortized discount and debt issuance costs [Abstract]
Long-term debt		$ 3,321		$ 3,200
Less: Long-term debt due within one year		(58)		(22)
Debt issuance costs		(40)		(39)
Long-term debt, net		3,223		3,139
Term Loan Facility [Member]
Long-term debt, net of an unamortized discount and debt issuance costs [Abstract]
Original principal	[1],[2]	$ 2,150
Annual interest rate	[1],[2]	Variable
Maturity date	[1],[2]	Sep. 22, 2024
Long-term debt	[1],[2]	$ 2,019		2,119
Average effective interest rate		5.60%	5.50%
Prepayment ratio greater than three but less than 2.75		50.00%
Prepayment ratio less than 2.75		0.00%
Senior Notes Due 2025 [Member]
Long-term debt, net of an unamortized discount and debt issuance costs [Abstract]
Original principal		$ 450
Annual interest rate		5.75%
Maturity date		Oct. 1, 2025
Long-term debt		$ 450		450
Senior Notes Due 2026 [Member]
Long-term debt, net of an unamortized discount and debt issuance costs [Abstract]
Original principal		$ 615
Annual interest rate		6.50%
Maturity date		Apr. 15, 2026
Long-term debt		$ 615		615
Standard Bank Term Loan Facility [Member]
Long-term debt, net of an unamortized discount and debt issuance costs [Abstract]
Original principal		$ 222
Annual interest rate		Variable
Maturity date		Mar. 25, 2024
Long-term debt		$ 222		0
Secured Debt [Member] | Term Loan Facility [Member]
Long-term debt, net of an unamortized discount and debt issuance costs [Abstract]
Original principal		1,500
Secured Debt [Member] | Blocked Term Loan [Member]
Long-term debt, net of an unamortized discount and debt issuance costs [Abstract]
Original principal		650
Finance Leases [Member]
Long-term debt, net of an unamortized discount and debt issuance costs [Abstract]
Long-term debt		$ 15		$ 16
[1]	Average effective interest rate of 5.6% and 5.5% during the three months ended March 31, 2019 and 2018, respectively.
[2]	The Term Loan Facility consists of (i) a U.S. dollar term facility in an aggregate principal amount of $1.5 billion (the "Term Loans") with our subsidiary, Tronox Finance LLC ("Tronox Finance") as the borrower and (ii) a U.S. dollar term facility in an aggregate principal amount of $650 million (the "Blocked Term Loan") with our unrestricted subsidiary, Tronox Blocked Borrower LLC (the "Blocked Borrower") as the borrower, which Blocked Term Loan was funded into a blocked account. Upon consummation of the Cristal Transaction on April 10, 2019, the Blocked Borrower merged with and into Tronox Finance, and the Blocked Term Loan became available to Tronox Finance. In the event of an asset sale, some or all of the net proceeds from the sale may be required to be used to prepay borrowings under the Term Loan Facility based on the ratio of the total combined debt outstanding under the Term Loan Facility and the Wells Fargo Revolver to the consolidated EBITDA, as defined in the Term Loan Facility, for the previous four quarters. If this ratio is greater than 3, then all of the net proceeds from an asset sale would be required to be used to prepay borrowings under the Term Loan Facility, while if the ratio were less than 3 but greater than 2.75, 50% of the net proceeds would be required for prepayment and if the ratio were less than 2.75, no prepayment would be required.

Fair Value (Details)

Fair Value (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Level 2 [Member] | Foreign Currency Contracts [Member]
Fair Value [Abstract]
Aggregate notional amount of outstanding foreign currency contracts	$ 54
Realized and unrealized gains of foreign currency contracts	5
Level 2 [Member] | Maximum [Member] | Foreign Currency Contracts [Member]
Fair Value [Abstract]
Fair value of foreign currency contracts	(1)
Term Loan Facility [Member] | Level 1 [Member]
Fair Value [Abstract]
Fair value of debt	2,013	$ 2,074
Standard Bank Term Loan Facility [Member] | Level 1 [Member]
Fair Value [Abstract]
Fair value of debt	222	0
Senior Notes Due 2025 [Member] | Level 1 [Member]
Fair Value [Abstract]
Fair value of debt	419	368
Senior Notes Due 2026 [Member] | Level 1 [Member]
Fair Value [Abstract]
Fair value of debt	$ 586	$ 518

Leases (Details)

Leases (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Lease Expenses [Abstract]
Operating lease expense	$ 7
Finance lease expense [Abstract]
Amortization of right-of-use assets	0
Interest on lease liabilities	1
Short term lease expense	4
Variable lease expense	4
Total lease expense	$ 16
Weighted-average Remaining Lease Term [Abstract]
Operating leases	4 years
Finance leases	11 years 3 months 18 days
Weighted-average Discount Rate [Abstract]
Operating leases	9.60%
Finance leases	14.20%
Maturity Analysis for Operating Leases [Abstract]
2019	$ 19
2020	22
2021	16
2022	8
2023	4
Thereafter	8
Total lease payments	77
Less: imputed interest	(14)
Present value of lease payments	63
Maturity Analysis for Finance Leases [Abstract]
2019	2
2020	3
2021	3
2022	3
2023	3
Thereafter	17
Total lease payments	31
Less: imputed interest	(16)
Present value of lease payments	15
Minimum Commitments for Operating Leases [Abstract]
2019		$ 15
2020		6
2021		5
2022		4
2023		3
Thereafter		4
Total lease payments		37
Minimum Commitments for Finance Leases [Abstract]
2019		3
2020		3
2021		3
2022		3
2023		3
Thereafter		18
Total lease payments		$ 33
Cash paid for amounts included in the measurement of lease liabilities [Abstract]
Operating cash flows used for operating leases	7
Operating cash flows used for finance leases	1
Financing cash flows used for finance leases	0
ROU assets obtained in exchange for lease obligations [Abstract]
Operating leases	3
Finance leases (recorded in "Property, plant, and equipment, net")	0
Cost of Goods Sold [Member]
Finance lease expense [Abstract]
Total lease expense	15
Selling, General and Administrative Expenses [Member]
Finance lease expense [Abstract]
Total lease expense	$ 1
Real Estate Leases [Member] | Minimum [Member]
Leases, Operating [Abstract]
Initial lease terms	1 year
Real Estate Leases [Member] | Maximum [Member]
Leases, Operating [Abstract]
Initial lease terms	19 years
Non-Real Estate Leases [Member] | Minimum [Member]
Leases, Operating [Abstract]
Initial lease terms	1 year
Non-Real Estate Leases [Member] | Maximum [Member]
Leases, Operating [Abstract]
Initial lease terms	25 years

Asset Retirement Obligations (D

Asset Retirement Obligations (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Dec. 31, 2018
Activity related to asset retirement obligations [Roll Forward]
Beginning balance	$ 74	$ 82
Additions	0	4
Accretion expense	1	1
Remeasurement/translation	0	1
Settlements/payments	0	(1)
Transferred with the sale of Henderson Electrolytic	0	(4)
Ending balance	75	83
Asset retirement obligations [Abstract]
Current portion included in "Accrued liabilities"			$ 5	$ 6
Noncurrent portion included in "Asset retirement obligations"			70	68
Asset retirement obligations	$ 74	$ 82	$ 75	$ 74

Commitments and Contingencies (

Commitments and Contingencies (Details) - USD ($) $ in Millions	Jul. 16, 2018	Mar. 31, 2019
Financial Commitments [Abstract]
Remainder of 2019		$ 123
2020		58
2021		40
2022		36
2023		22
Thereafter		69
Commitments and Contingencies [Abstract]
Loss contingency		43
Ashtabula [Member] | Venator Materials PLC [Member]
Commitments and Contingencies [Abstract]
Break Fee	$ 75
Cristal's North American Operations [Member]
Commitments and Contingencies [Abstract]
Consideration from business divestiture	$ 1,100
Letters of Credit [Member]
Commitments and Contingencies [Abstract]
Loss contingency		21
Bank Guarantees [Member]
Commitments and Contingencies [Abstract]
Loss contingency		21
Performance Bonds [Member] | Maximum [Member]
Commitments and Contingencies [Abstract]
Loss contingency		$ 1

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Loss Attributable to Tronox Holdings plc (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Changes in accumulated other comprehensive income (loss) by component [Roll Forward]
Balance	$ 862	$ 1,015
Balance	680	1,033
Accumulated Other Comprehensive Loss [Member]
Changes in accumulated other comprehensive income (loss) by component [Roll Forward]
Balance	(540)	(403)
Other comprehensive income (loss)	(11)	44
Acquisition of noncontrolling interest	(61)
Amounts reclassified from accumulated other comprehensive income (loss)		1
Balance	(612)	(358)
Cumulative Translation Adjustment [Member]
Changes in accumulated other comprehensive income (loss) by component [Roll Forward]
Balance	(445)	(312)
Other comprehensive income (loss)	(11)	44
Acquisition of noncontrolling interest	(61)
Amounts reclassified from accumulated other comprehensive income (loss)		0
Balance	(517)	(268)
Pension Liability Adjustment [Member]
Changes in accumulated other comprehensive income (loss) by component [Roll Forward]
Balance	(95)	(90)
Other comprehensive income (loss)	0	0
Acquisition of noncontrolling interest	0
Amounts reclassified from accumulated other comprehensive income (loss)		1
Balance	$ (95)	(89)
Unrealized Gains (Losses) on Derivatives [Member]
Changes in accumulated other comprehensive income (loss) by component [Roll Forward]
Balance		(1)
Other comprehensive income (loss)		0
Amounts reclassified from accumulated other comprehensive income (loss)		0
Balance		$ (1)

Share-Based Compensation (Detai

Share-Based Compensation (Details) - USD ($) $ in Millions	3 Months Ended				12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017
Restricted Share Units (RSUs), Time-Based Awards [Member] | Board Members [Member] | Tranche One [Member]
Restricted Shares and Restricted Share Units ("RSUs"), Number of Shares [Roll Forward]
Granted (in shares)	132,728
Award vesting period	1 year
Restricted Share Units (RSUs), Time-Based Awards [Member] | Management [Member] | Tranche Two [Member]
Restricted Shares and Restricted Share Units ("RSUs"), Number of Shares [Roll Forward]
Granted (in shares)	1,143,018
Award vesting period	3 years
Restricted Share Units (RSUs), Performance-Based Awards [Member]
Restricted Shares and Restricted Share Units ("RSUs"), Number of Shares [Roll Forward]
Performance measurement period	3 years
Unrecognized compensation expense related to nonvested restricted shares and nonvested RSUs, adjusted for estimated forfeitures	$ 66
Weighted average period of recognition for unrecognized compensation expense	2 years
Restricted Share Units (RSUs), Performance-Based Awards [Member] | Management [Member] | Tranche One [Member]
Restricted Shares and Restricted Share Units ("RSUs"), Number of Shares [Roll Forward]
Granted (in shares)	1,143,018
Award vesting period	3 years
Options [Member]
Restricted Shares and Restricted Share Units ("RSUs"), Number of Shares [Roll Forward]
Exercised (in shares)	0
Integration Incentive Award [Member] | Restricted Share Units (RSUs) [Member] | Executive Officers and Managers [Member]
Restricted Shares and Restricted Share Units ("RSUs"), Number of Shares [Roll Forward]
Granted (in shares)				139,225
Award vesting period	2 years
Reversal of compensation expense				$ 6
Integration Incentive Award [Member] | Restricted Share Units (RSUs), Performance-Based Awards [Member] | Executive Officers and Managers [Member]
Restricted Shares and Restricted Share Units ("RSUs"), Number of Shares [Roll Forward]
Granted (in shares)					1,397,471
Modified Integration Incentive Award [Member] | Restricted Share Units (RSUs), Performance-Based Awards [Member]
Restricted Shares and Restricted Share Units ("RSUs"), Number of Shares [Roll Forward]
Granted (in shares)		40,161	90,161
Award vesting period	2 years

Pension and Other Postretirem_3

Pension and Other Postretirement Healthcare Benefits (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Net periodic cost [Abstract]
Service cost	$ 0	$ 0
Interest cost	3	3
Expected return on plan assets	(3)	(4)
Net amortization of actuarial loss	0	1
Total net periodic cost	$ 0	0
Pension Plan [Member]
Pension and Other Postretirement Healthcare Benefits [Abstract]
Defined Benefit Plan, Tax Status [Extensible List]	us-gaap:QualifiedPlanMember
Pension Plan [Member] | Other Income (Expense), Net [Member] | Maximum [Member]
Net periodic cost [Abstract]
Total net periodic cost	$ 1	1
Postretirement Healthcare Plans [Member] | Other Income (Expense), Net [Member] | Maximum [Member] | South Africa [Member]
Net periodic cost [Abstract]
Total net periodic cost	$ 1	$ 1

Pension and Other Postretirem_4

Pension and Other Postretirement Healthcare Benefits, Multiemployer Plans (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Multiemployer Plans, Pension [Member] | Netherlands [Member] | Cost of Goods Sold [Member]
Multiemployer Plans [Abstract]
Employer contribution amount	$ 1	$ 1

Related Parties (Details)

Related Parties (Details) - Exxaro [Member] $ / shares in Units, shares in Millions, R in Millions, $ in Millions	May 09, 2019USD ($)$ / shares	Feb. 15, 2019USD ($)	Feb. 15, 2019ZAR (R)	Mar. 31, 2019USD ($)shares	Dec. 31, 2018shares
Related Parties [Abstract]
Ownership percentage					23.00%
Related-party accrued liabilities				$ 1
Exxaro Mineral Sands Transaction Completion Agreement [Member] | Subsequent Event [Member]
Related Parties [Abstract]
Stock repurchased, aggregate purchase price	$ 200
Stock repurchased, price per share (in dollars per share) | $ / shares	$ 14.3185
Capital gains tax	$ 5
Cristal Acquisition [Member]
Related Parties [Abstract]
Number of shares held by affiliate (in shares) | shares				14.7
Ownership percentage				9.90%
Tronox Sands [Member]
Related Parties [Abstract]
Ownership percentage				26.00%
Cash consideration for acquisition		$ 148	R 2,060
South African Subsidiaries [Member]
Related Parties [Abstract]
Ownership percentage					26.00%
U.K. Subsidiary [Member]
Related Parties [Abstract]
Ownership percentage					26.00%
Class B [Member]
Related Parties [Abstract]
Number of shares held by affiliate (in shares) | shares					28.7

Segment Information (Details)

Segment Information (Details)	3 Months Ended
	Mar. 31, 2019Segment
Net sales and income (loss) from operations by segment [Abstract]
Segment [Extensible List]	trox:TiO2SegmentMember
Number of operating segments	1

Subsequent Events (Details)

Subsequent Events (Details) $ / shares in Units, € in Millions, $ in Millions	May 09, 2019USD ($)$ / sharesshares	May 01, 2019USD ($)	Apr. 26, 2019EUR (€)	Apr. 10, 2019USD ($)$ / sharesshares	Jun. 30, 2019USD ($)	Mar. 31, 2019USD ($)	Mar. 31, 2018USD ($)
Cristal's North American Operations [Member] | Forecast [Member]
Business Acquisition [Abstract]
Loss on sale of business					$ (19)
Exxaro [Member]
Business Acquisition [Abstract]
Related-party accrued liabilities						$ 1	$ 1
Subsequent Event [Member] | Cristal's North American Operations [Member]
Business Acquisition [Abstract]
Proceeds from divestiture of operations		$ 700
Subsequent Event [Member] | Exxaro [Member] | Exxaro Mineral Sands Transaction Completion Agreement [Member]
Business Acquisition [Abstract]
Stock repurchased (in shares) | shares	14,000,000
Stock repurchased, aggregate purchase price	$ 200
Stock repurchased, price per share (in dollars per share) | $ / shares	$ 14.3185
Ownership interest	9.90%
Capital gains tax	$ 5
Subsequent Event [Member] | Venator Materials PLC [Member]
Business Acquisition [Abstract]
Proceeds from divestiture of operations | €			€ 1
Supply agreement term			2 years
Total cash consideration | €			€ 8
Consideration amount receivable | €			€ 7
Subsequent Event [Member] | Venator Materials PLC [Member] | Maximum [Member]
Business Acquisition [Abstract]
Supply agreement extendable term			3 years
Subsequent Event [Member] | Cristal's Titanium Dioxide Business [Member]
Business Acquisition [Abstract]
Cash consideration for acquisition				$ 1,673
Number of ordinary shares to be issued for acquisition (in shares) | shares				37,580,000
Share value at acquisition closing date (in dollars per shares) | $ / shares				$ 14
Total consideration for acquisition				$ 2,200