Tronox (TROX) 10-K 1 Mar 18 2017 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2017	Jan. 31, 2018	Jun. 30, 2017
Document Information [Line Items]
Entity Registrant Name	Tronox Ltd
Entity Central Index Key	1,530,804
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float			$ 1,797,488,386
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	FY
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2017
Class A Ordinary Shares [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		92,660,776
Class B Ordinary Shares [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		28,729,280

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Millions		3 Months Ended												12 Months Ended
		Dec. 31, 2017		Sep. 30, 2017		Jun. 30, 2017		Mar. 31, 2017		Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017		Dec. 31, 2016		Dec. 31, 2015
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract]
Net sales		$ 464		$ 435		$ 421		$ 378		$ 352	$ 339	$ 333	$ 285	$ 1,698		$ 1,309		$ 1,510
Cost of goods sold		339		329		327		315		298	291	295	291	1,310		1,175		1,491
Gross profit		125		106		94		63		54	48	38	(6)	388		134		19
Selling, general and administrative expenses														(251)		(189)		(199)
Restructuring income (expense)														1		(1)		(21)
Income (loss) from operations														138		(56)		(201)
Interest and debt expense, net														(188)		(185)		(176)
Gain (loss) on extinguishment of debt														(28)		4		0
Other income (expense), net														(9)		(27)		28
Income (loss) from continuing operations before income taxes														(87)		(264)		(349)
Income tax (provision) benefit														(6)		125		(23)
Net income (loss) from continuing operations		2		(25)		(17)		(53)		99	(62)	(62)	(114)	(93)		(139)		(372)
Net income (loss) from discontinued operations, net of tax		0		(216)	[1]	22		15		24	23	12	20	(179)		79		55
Net income (loss)		2	[2]	(241)	[2]	5	[2]	(38)	[2]	123	(39)	(50)	(94)	(272)		(60)		(317)
Net income (loss) attributable to noncontrolling interest		2		6		2		3		2	(2)	2	(1)	13		1		12
Net income (loss) attributable to Tronox Limited		$ 0	[2]	$ (247)	[2]	$ 3	[2]	$ (41)	[2]	$ 121	$ (37)	$ (52)	$ (93)	$ (285)		$ (61)		$ (329)
Net income (loss) per share, basic and diluted:
Continuing operations (in dollars per share)		$ 0		$ (0.26)		$ (0.16)		$ (0.48)						$ (0.89)	[3]	$ (1.20)	[3]	$ (3.31)	[3]
Discontinued operations (in dollars per share)		$ 0		$ (1.81)		$ 0.18		$ 0.13						(1.50)	[3]	0.68	[3]	0.47	[3]
Net income (loss) per share, basic and diluted	[3]													$ (2.39)		$ (0.52)		$ (2.84)
Weighted average shares outstanding, basic and diluted (in shares)														119,502		116,161		115,566
[1]	Includes a loss of $233 million on the Alkali Sale.
[2]	During the fourth quarter of 2017, we recorded out-of-period adjustments that should have been recorded previously that decreased net income (loss) from continuing operations by $2 million and decreased income from continuing operations per share by $0.01. After evaluating the quantitative and qualitative aspects of the adjustments, we concluded the effect of these adjustments, individually and in the aggregate, was not material to our previously issued interim and annual consolidated financial statements and is not material to our 2017 consolidated financial statements.
[3]	Net loss per ordinary share amounts were calculated from exact, not rounded net loss and share information.

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) [Abstract]
Net income (loss)	$ (272)	$ (60)	$ (317)
Other comprehensive income (loss):
Foreign currency translation adjustments	125	119	(292)
Pension and postretirement plans:
Actuarial gains (losses), net of taxes of less than $1 million in 2017, 2016, and 2015	(6)	(18)	12
Amortization of unrecognized actuarial losses, net of taxes of less than $1 million in 2017, 2016 and 2015	3	2	3
Removal of Alkali qualified plan actuarial losses due to Sale	5	0	0
Prior service credit (no tax impact, see Note 6)	0	(4)	0
Pension and postretirement benefit curtailments gain (loss) (no tax impact, see Note 6)	0	(1)	0
Settlement gain on the Netherlands Pension Plan, (no tax impact; See Note 6)	0	31	0
Unrealized gains (losses) on derivative financial instruments, (no tax impact; See Note 6)	(4)	3	0
Other comprehensive income (loss)	123	132	(277)
Total comprehensive income (loss)	(149)	72	(594)
Comprehensive income (loss) attributable to noncontrolling interest:
Net income	13	1	12
Foreign currency translation adjustments	29	31	(77)
Comprehensive income (loss) attributable to noncontrolling interest	42	32	(65)
Comprehensive income (loss) attributable to Tronox Limited	$ (191)	$ 40	$ (529)

CONSOLIDATED STATEMENTS OF COM4

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical) - Maximum [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Pension and postretirement plans:
Actuarial gains (losses), taxes	$ 1	$ 1	$ 1
Amortization of unrecognized actuarial losses, taxes	$ 1	$ 1	$ 1

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions		Dec. 31, 2017	Dec. 31, 2016
Current Assets
Cash and cash equivalents		$ 1,116	$ 248
Restricted cash		653	3
Accounts receivable, net of allowance for doubtful accounts		336	278
Inventories, net		473	499
Prepaid and other assets		53	28
Income taxes receivable		8	11
Total assets of discontinued operations		0	1,671
Total current assets		2,639	2,738
Noncurrent Assets
Property, plant and equipment, net	[1]	1,115	1,092
Mineral leaseholds, net		885	877
Intangible assets, net		198	223
Inventories, net		3	14
Other long-term assets		24	20
Total assets		4,864	4,964
Current Liabilities
Accounts payable		165	136
Accrued liabilities		163	150
Short-term debt		0	150
Long-term debt due within one year		17	16
Income taxes payable		3	1
Total liabilities of discontinued operations		0	111
Total current liabilities		348	564
Noncurrent Liabilities
Long-term debt, net		3,130	2,888
Pension and postretirement healthcare benefits		103	115
Asset retirement obligations		79	73
Long-term deferred tax liabilities		171	151
Other long-term liabilities		18	20
Total liabilities		3,849	3,811
Commitments and Contingencies
Shareholders' Equity
Capital in excess of par value		1,558	1,524
Accumulated deficit		(327)	(19)
Accumulated other comprehensive loss		(403)	(497)
Total Tronox Limited shareholders' equity		829	1,009
Noncontrolling interest		186	144
Total equity		1,015	1,153
Total liabilities and equity		4,864	4,964
Class A [Member]
Shareholders' Equity
Common stock, value		1	1
Class B [Member]
Shareholders' Equity
Common stock, value		$ 0	$ 0
[1]	Substantially, all of these assets are pledged as collateral for our debt. See Note 15.

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2017	Dec. 31, 2016
Class A [Member]
Shareholders' Equity
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares issued (in shares)	92,717,935	65,998,306
Common stock, shares outstanding (in shares)	92,541,463	65,165,672
Class B [Member]
Shareholders' Equity
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares issued (in shares)	28,729,280	51,154,280
Common stock, shares outstanding (in shares)	28,729,280	51,154,280

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash Flows from Operating Activities:
Net income (loss)	$ (272)	$ (60)	$ (317)
Net income (loss) from discontinued operations, net of tax	(179)	79	55
Net income (loss) from continuing operations	(93)	(139)	(372)
Adjustments to reconcile net loss from continuing operations to net cash provided by operating activities, continuing operations:
Depreciation, depletion and amortization	182	177	253
Corporate Reorganization	0	(107)	0
Deferred income taxes	2	(9)	(1)
Share-based compensation expense	31	24	22
Amortization of deferred debt issuance costs and discount on debt	15	11	11
Pension and postretirement healthcare benefit (income) expense	3	2	1
(Gain) loss on extinguishment of debt	28	(4)	0
Other, net	37	50	(3)
Contributions to employee pension and postretirement plans	(23)	(19)	(15)
Changes in assets and liabilities:
(Increase) decrease in accounts receivable, net	(50)	(21)	10
(Increase) decrease in inventories, net	60	107	154
(Increase) decrease in prepaid and other assets	(28)	(5)	3
Increase (decrease) in accounts payable and accrued liabilities	1	17	0
Increase (decrease) in taxes payable	1	2	4
Cash provided by operating activities-continuing operations	166	86	67
Cash Flows from Investing Activities:
Capital expenditures	(91)	(86)	(165)
Debt proceeds restricted for Cristal acquisition	(651)	0	0
Proceeds from the sale of business	1,325	0	0
Proceeds from the sale of assets	0	2	1
Acquisition of business	0	0	(1,650)
Cash provided by (used in) investing activities - continuing operations	583	(84)	(1,814)
Cash Flows from Financing Activities:
Repayments of Short-term Debt	(150)	0	0
Repayments of long-term debt	(2,342)	(31)	(18)
Proceeds from long-term debt	2,589	0	750
Debt issuance costs	(37)	0	(15)
Call premium paid	(14)	0	0
Dividends paid	(23)	(46)	(117)
Restricted stock and performance-based shares settled in cash for taxes	(12)	(1)	(1)
Proceeds from the exercise of warrants and options	13	0	3
Cash provided by (used in) financing activities - continuing operations	24	(78)	602
Discontinued Operations:
Cash provided by operating activities	107	126	150
Cash used in investing activities	(25)	(33)	(26)
Net cash flows provided by discontinued operations	82	93	124
Effects of exchange rate changes on cash and cash equivalents	13	2	(26)
Net increase (decrease) in cash and cash equivalents	868	19	(1,047)
Cash and cash equivalents at beginning of period	248	229	1,276
Cash and cash equivalents at end of period, continuing operations	1,116	248	229
Supplemental cash flow information - continuing operations:
Interest paid, net	186	171	152
Income taxes paid	$ 10	$ 2	$ 23

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Millions	Total Tronox Limited Shareholders' Equity [Member]	Ordinary Shares [Member]Class A [Member]	Ordinary Shares [Member]Class B [Member]	Capital in Excess of par Value [Member]	(Accumulated Deficit) Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Non-controlling Interest [Member]	Total
Balance at Dec. 31, 2014	$ 1,615	$ 1	$ 0	$ 1,476	$ 536	$ (398)	$ 177	$ 1,792
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(329)	0	0	0	(329)	0	12	(317)
Other comprehensive income (loss)	(200)	0	0	0	0	(200)	(77)	(277)
Share-based compensation	21	0	0	21	0	0	0	21
Warrants and options exercised	3	0	0	3	0	0	0	3
Class A and Class B share dividends	(118)	0	0	0	(118)	0	0	(118)
Balance at Dec. 31, 2015	992	1	0	1,500	89	(598)	112	1,104
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(61)	0	0	0	(61)	0	1	(60)
Other comprehensive income (loss)	101	0	0	0	0	101	31	132
Share-based compensation	25	0	0	25	0	0	0	25
Shares cancelled	(1)	0	0	(1)	0	0	0	(1)
Class A and Class B share dividends	(47)	0	0	0	(47)	0	0	(47)
Balance at Dec. 31, 2016	1,009	1	0	1,524	(19)	(497)	144	1,153
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(285)	0	0	0	(285)	0	13	(272)
Other comprehensive income (loss)	94	0	0	0	0	94	29	123
Share-based compensation	33	0	0	33	0	0	0	33
Shares cancelled	(12)	0	0	(12)	0	0	0	(12)
Warrants and options exercised	13	0	0	13	0	0	0	13
Class A and Class B share dividends	(23)	0	0	0	(23)	0	0	(23)
Balance at Dec. 31, 2017	$ 829	$ 1	$ 0	$ 1,558	$ (327)	$ (403)	$ 186	$ 1,015

The Company

The Company	12 Months Ended
	Dec. 31, 2017
The Company [Abstract]
The Company	1. The Company Tronox Limited and its subsidiaries (collectively referred to as “Tronox,” “we,” “us,” or “our”) is a public limited company registered under the laws of the State of Western Australia. We are a global leader in the production and marketing of titanium bearing mineral sands and titanium dioxide (“TiO 2 2 2 We have global operations in North America, Europe, South Africa, and the Asia-Pacific region. We classify our business into one reportable segment, TiO 2 On February 21, 2017, Tronox Limited, The National Titanium Dioxide Company Ltd., a limited company organized under the laws of the Kingdom of Saudi Arabia (“Cristal”), and Cristal Inorganic Chemicals Netherlands Coöperatief W.A., a cooperative organized under the laws of the Netherlands and a wholly owned subsidiary of Cristal (“Seller”), entered into a Transaction Agreement (the “Transaction Agreement”), pursuant to which we agreed to acquire Cristal’s titanium dioxide business for $1.673 billion in cash, subject to a working capital adjustment at closing (the “Cash Consideration”), plus 37,580,000 Class A ordinary shares (“Class A Shares”), par value $0.01 per share, of Tronox Limited (the “Cristal Transaction”). Following the closing of the Cristal Transaction, the Seller will own approximately 24% of the outstanding ordinary shares (including both Class A and Class B) of Tronox Limited. On March 1, 2018, Tronox, Cristal and Seller entered into an Amendment to the Transaction Agreement (the "Amendment") that extends the termination date under the Transaction Agreement to June 30, 2018, with automatic 3-month extensions to March 31, 2019, if necessary based on the status of outstanding regulatory approvals. The Amendment also provides that Tronox has the right to terminate the Transaction Agreement if it determines that the outstanding regulatory approvals are not reasonably likely to be obtained. In the event that such termination by Tronox is (i) on or after January 1, 2019, and Tronox elects to terminate the Transaction Agreement if it determines that the outstanding regulatory approvals are not reasonably likely to be obtained; or (ii) if regulatory approval has not been obtained by March 31, 2019 and Tronox or Cristal elects to terminate the Transaction Agreement; then Tronox is required to pay Cristal a $60 million termination fee. The Transaction Agreement also provides that we must pay to Cristal a termination fee of $100 million if all conditions to closing, other than the financing condition, have been satisfied and the Transaction Agreement is terminated because closing has not occurred by June 30, 2018 (subject to automatic 3-month extensions to March 31, 2019 if necessary based on the status of outstanding regulatory approvals). The Cristal Transaction is conditioned upon the receipt of various regulatory approvals, including antitrust clearance in numerous jurisdictions. On April 13, 2017, the FTC issued a request for additional information ("Second Request") to the Company and Cristal in connection with its filing under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and Tronox believes it has fully complied with the Second Request. On December 5, 2017, the FTC announced that it would not approve the Cristal Transaction as proposed and filed an administrative action to prevent the parties from consummating the transaction. On January 23, 2018, Tronox filed suit against the FTC in the U.S. District Court for the Northern District of Mississippi seeking a declaration that the Cristal Transaction is lawful under applicable law, among other things. On December 21, 2017, the European Commission announced that after its initial review, it would pursue a Phase II investigation of the Cristal Transaction before reaching a decision to approve it, with or without conditions. The Transaction Agreement provides for customary representations, warranties and covenants that are subject, in some cases, to specified exceptions and qualifications contained in the Transaction Agreement. There can be no assurance, however, that all closing conditions for the Cristal Transaction will be satisfied and, if they are satisfied, that they will be satisfied in time for the closing to occur by June 30, 2018 (subject to automatic 3-month extensions to March 31, 2019 if necessary based on the status of outstanding regulatory approvals), at which time either party to the Transaction Agreement may mutually agree to extend the closing date or terminate the Transaction Agreement if the Cristal Transaction has not closed by such time. We have received approval for the Cristal Transaction from seven of the nine regulatory jurisdictions whose approvals are required to close the Cristal Transaction. On October 2, 2017, at a special meeting of shareholders of the Company held pursuant to the Transaction Agreement, the Company’s shareholders approved a resolution to issue 37,580,000 Class A Shares to the Seller in connection with the acquisition of Cristal’s TiO 2 On September 1, 2017, we completed the previously announced sale of our wholly owned subsidiary Tronox Alkali Corporation (“Alkali”) to Genesis Energy, L.P. for proceeds of $1.325 billion in cash (the “Sale”). During the year ended December 31, 2017, we recognized a pre-tax loss of $233 million on the Alkali disposal. For all periods presented, sales, costs and expenses and income taxes attributable to Alkali together with the loss on disposal have been aggregated in a single caption entitled “Income (loss) from discontinued operations, net of tax” in our Consolidated Statement of Operations. Included in the calculation of the loss noted above, were approximately $21 million of transaction fees related to the sale of Alkali. For cash flow presentation purposes, these transaction costs are included in “Cash provided by operating activities, continuing operations” on the Consolidated Statements of Cash Flows. See Note 3 – Discontinued Operations for additional information. In 2012, our Class B ordinary shares (“Class B Shares”) were issued to Exxaro Resources Limited (“Exxaro”) and one of its subsidiaries in consideration for 74% of Exxaro’s South African mineral sands business. Exxaro has agreed not to acquire any voting shares of Tronox Limited if, following such acquisition, Exxaro will have a voting interest in Tronox Limited of 50% or more unless Exxaro brings any proposal to make such an acquisition to the Tronox Board of Directors on a confidential basis. In the event an agreement regarding the proposal is not reached, Exxaro is permitted to make a takeover offer for all the shares of Tronox Limited not held by affiliates of Exxaro, subject to certain non-waivable conditions. On March 8, 2017, Exxaro announced its intention to begin pursuing a path to monetize its ownership stake in Tronox over time. On October 10, 2017, Exxaro sold 22,425,000 Class A ordinary shares (“Class A Shares”) in an underwritten registered offering (the “Exxaro Share Transaction”). At December 31, 2017 and December 31, 2016, Exxaro held approximately 24% and 44%, respectively, of the voting securities of Tronox Limited. See Note 21 for additional information regarding Exxaro transactions. Presently, Exxaro intends to sell the remainder of its Tronox shares in a staged process over time pursuant to the existing registration statement, subject to market conditions. Exxaro’s sale of Class A Shares did not impact their 26% ownership interest in each of our Tronox KZN Sands (Pty) Ltd. and Tronox Mineral Sands (Pty) Ltd subsidiaries. Exxaro is entitled to exchange this interest for approximately 3.2% in additional Class B Shares under certain circumstances. Exxaro also has a 26% ownership interest in certain of our other non-operating subsidiaries. Basis of Presentation We are considered a domestic company in Australia and, as such, are required to report in Australia under International Financial Reporting Standards (“IFRS”). Additionally, as we are not considered a “foreign private issuer” in the U.S., we are required to comply with the reporting and other requirements imposed by the U.S. securities law on U.S. domestic issuers, which, among other things, requires reporting under accounting principles generally accepted in the United States of America (“U.S. GAAP”). The consolidated financial statements included in this Form 10-K are prepared in conformity with U.S. GAAP. We publish our consolidated financial statements, in both U.S. GAAP and IFRS, in U.S. dollars. Exxaro has a 26% ownership interest in each of our Tronox KZN Sands (Pty) Ltd. and Tronox Mineral Sands (Pty) Ltd. subsidiaries in order to comply with the ownership requirements of the Black Economic Empowerment (“BEE”) legislation in South Africa. We account for such ownership interest as “Noncontrolling interest” in our consolidated financial statements. Our consolidated financial statements include the accounts of all majority-owned subsidiary companies. All intercompany balances and transactions have been eliminated in consolidation. Certain prior period amounts have been reclassified to conform to the manner and presentation in the current period. Revision of Previously Issued Consolidated Financial Statements During the three months ended March 31, 2017, we identified a misstatement in our selling, general, and administrative expense for certain prior periods related to a liability resulting from a non-timely filing with a statutory authority. The aggregate misstatement is $11 million, which impacts our previously issued consolidated statements of operations, comprehensive loss, balance sheets and cash flows as of and for the years ended December 31, 2015 and 2016, and the unaudited condensed consolidated financial statements for the third and fourth quarters and corresponding year-to-date periods of 2015, and each quarter and corresponding year-to-date periods of 2016. In accordance with Staff Accounting Bulletin (“SAB”) No. 99, Materiality, and SAB No. 108, Considering the Effects of Prior Year Misstatements when Quantifying Misstatements in Current Year Financial Statements The effects on our consolidated financial statements are as follows: Consolidated Statement of Operations Year Ended December 31, 2016 Year Ended December 31, 2015 As Reported (1) Adjustment Revised As Reported (1) Adjustment Revised Net sales $ 1,309 $ — $ 1,309 $ 1,510 $ — $ 1,510 Cost of goods sold 1,175 — 1,175 1,487 4 1,491 Gross profit 134 — 134 23 (4 ) 19 Selling, general and administrative expenses (185 ) (4 ) (189 ) (192 ) (7 ) (199 ) Income (loss) from operations (52 ) (4 ) (56 ) (190 ) (11 ) (201 ) Other income (expense), net (27 ) — (27 ) 28 — 28 Income (loss) from continuing operations before income taxes (260 ) (4 ) (264 ) (338 ) (11 ) (349 ) Net income (loss) from continuing operations (135 ) (4 ) (139 ) (362 ) (10 ) (372 ) Income (loss) from discontinued operations, net of tax 77 2 79 55 — 55 Net loss attributable to Tronox Limited (59 ) (2 ) (61 ) (318 ) (11 ) (329 ) Net income (loss) per share from continuing operations, basic and diluted (1.17 ) (0.03 ) (1.20 ) (3.22 ) (0.09 ) (3.31 ) Net income (loss) per share from discontinued operations, basic and diluted 0.67 0.01 0.68 0.47 — 0.47 Weighted average shares outstanding, basic and diluted (in thousands) 116,161 116,161 116,161 115,566 115,566 115,566 Consolidated Statements of Comprehensive Income (Loss) Year Ended December 31, 2016 Year Ended December 31, 2015 As Reported Adjustment Revised As Reported Adjustment Revised Net loss $ (58 ) $ (2 ) $ (60 ) $ (307 ) $ (10 ) $ (317 ) Total comprehensive income (loss) 74 (2 ) 72 (584 ) (10 ) (594 ) Comprehensive income (loss) attributable to Tronox Limited 42 (2 ) 40 (518 ) (11 ) (529 ) Consolidated Balance Sheet Year Ended December 31, 2016 As Reported (1) Adjustment Revised Current assets of continuing operations $ 1,067 $ — $ 1,067 Total assets of discontinued operations 1,668 3 1,671 Total current assets 2,735 3 2,738 Total assets 4,961 3 4,964 Accrued liabilities 138 11 149 Current liabilities of continuing operations 443 10 453 Total liabilities of discontinued operations 110 1 111 Total current liabilities 553 11 564 Total liabilities 3,800 11 3,811 Accumulated deficit (13 ) (6 ) (19 ) Accumulated other comprehensive loss (495 ) (2 ) (497 ) Total Tronox Limited shareholders’ equity 1,017 (8 ) 1,009 Total equity 1,161 (8 ) 1,153 Total liabilities and equity 4,961 3 4,964 (1) Amounts reflect the results of Alkali as discontinued operations . Consolidated Statement of Cash Flows There was no net impact to operating, investing and financing cash flows from the revisions for continuing operations for the years ended December 31, 2016 and 2015. Use of Estimates 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.

Significant Accounting Policies

Significant Accounting Policies	12 Months Ended
	Dec. 31, 2017
Significant Accounting Policies [Abstract]
Significant Accounting Policies	2. Significant Accounting Policies Foreign Currency The U.S. dollar is the functional currency for our operations, except for our South African operations, whose functional currency is the Rand, and our European operations, whose functional currency is the Euro. We determine the functional currency of each subsidiary based on a number of factors, including the predominant currency for revenues, expenditures and borrowings. Adjustments from the remeasurement of non-functional currency monetary assets and liabilities are recorded in “Other income (expense), net” in the Consolidated Statements of Operations. When the subsidiary’s functional currency is not the U.S. dollar, translation adjustments resulting from translating the functional currency financial statements into U.S. dollar equivalents are recorded in “Accumulated other comprehensive loss” in the Consolidated Balance Sheets. Gains and losses on intercompany foreign currency transactions that are not expected to be settled in the foreseeable future are reported in the same manner as translation adjustments. Revenue Recognition Revenue is recognized when risk of loss and title to the product is transferred to the customer, pricing is fixed or determinable, and collection is reasonably assured. All amounts billed to a customer in a sales transaction related to shipping and handling represent revenues earned and are reported as “Net sales” in the Consolidated Statements of Operations. Accruals are made for sales returns, rebates and other allowances, which are recorded in “Net sales” in the Consolidated Statements of Operations, and are based on our historical experience and current business conditions. Cost of Goods Sold Cost of goods sold includes costs for purchasing, receiving, manufacturing, and distributing products, including raw materials, energy, labor, depreciation, depletion, shipping and handling, freight, warehousing, and other production costs. Research and Development Research and development costs, included in “Selling, general and administrative expenses” in the Consolidated Statements of Operation comprising of salaries, building costs, utilities, administrative expenses, and allocations of corporate costs, were $8 million, $9 million, and $11 million during 2017, 2016, and 2015, respectively, and were expensed as incurred. Selling, General and Administrative Expenses Selling, general and administrative expenses include costs related to marketing, agent commissions, and legal and administrative functions such as corporate management, human resources, information technology, investor relations, accounting, treasury, and tax compliance. Income Taxes We use the asset and liability method of accounting for income taxes. The estimation of the amounts of income taxes involves the interpretation of complex tax laws and regulations and how foreign taxes affect domestic taxes, as well as the analysis of the realizability of deferred tax assets, tax audit findings, and uncertain tax positions. Deferred tax assets and liabilities are determined based on temporary differences between the financial reporting and tax bases of assets and liabilities using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. A valuation allowance is provided against a deferred tax asset when it is more likely than not that all or some portion of the deferred tax asset will not be realized. We periodically assess the likelihood that we will be able to recover our deferred tax assets, and reflect any changes in our estimates in the valuation allowance, with a corresponding adjustment to earnings or other comprehensive income (loss), as appropriate. All available positive and negative evidence is weighted to determine whether a valuation allowance should be recorded. The amount of income taxes we pay is subject to ongoing audits by federal, state, and foreign tax authorities, which may result in proposed assessments. Our estimate for the potential outcome for any uncertain tax issue is highly judgmental. We assess our income tax positions, and record tax benefits for all years subject to examination based upon our evaluation of the facts, circumstances, and information available at the reporting date. For those tax positions for which it is more likely than not that a tax benefit will be sustained, we record the amount that has a greater than 50% likelihood of being realized upon settlement with a taxing authority that has full knowledge of all relevant information. Interest and penalties are accrued as part of tax expense, where applicable. If we do not believe that it is more likely than not that a tax benefit will be sustained, no tax benefit is recognized. See Note 6. Earnings per Share Basic and diluted earnings per share are calculated using the two-class method. Under the two-class method, earnings used to determine basic earnings per share are reduced by an amount allocated to participating securities. Participating securities include restricted shares issued under the Tronox Management Equity Incentive Plan (the “MEIP”) (see Note 19) and the T-Bucks Employee Participation Plan (“T-Bucks EPP”) (see Note 19), both of which contain non-forfeitable dividend rights. Our unexercised options, unexercised Series A and Series B Warrants (see Note 18), and unvested restricted share units do not contain non-forfeitable rights to dividends and, as such, are not considered in the calculation of basic earnings per share. Our unvested restricted shares do not have a contractual obligation to share in losses; therefore, when we record a net loss, none of the loss is allocated to participating securities. Consequently, in periods of net loss, the two-class method does not have an effect on basic loss per share. Diluted earnings per share is calculated by dividing net earnings allocable to ordinary shares by the weighted-average number of ordinary shares outstanding for the period, as adjusted for the potential dilutive effect of non-participating restricted share units, options, and Series A and Series B Warrants. The options and Series A and Series B Warrants are included in the calculation of diluted earnings per ordinary share utilizing the treasury stock method. See Note 7. Fair Value Measurement We measure fair value on a recurring basis utilizing valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs, to the extent possible, and consider counterparty credit risk in our assessment of fair value. The fair value hierarchy is as follows: • Level 1 – Quoted prices in active markets for identical assets and liabilities; • Level 2 – Quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets and liabilities in markets that are not active or other inputs that are observable or can be corroborated by observable market data; and, • Level 3 – Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets and liabilities See Note 8. Cash and Cash Equivalents We consider all investments with original maturities of three months or less to be cash equivalents. We maintain cash and cash equivalents in bank deposit and money market accounts that may exceed federally insured limits. The financial institutions where our cash and cash equivalents are held are generally highly rated and geographically dispersed, and we have a policy to limit the amount of credit exposure with any one institution. We have not experienced any losses in such accounts and believe we are not exposed to significant credit risk. At December 31, 2017, included in restricted cash was $651 million related to our Blocked Term Loan (defined below) See Note 15. Upon consummation of the Cristal acquisition, the Blocked Term Loan will become available to Tronox Finance. See Note 15. At December 31, 2017, 2016 and 2015, we had restricted cash in Australia related to outstanding performance bonds of $2 million, $3 million and $5 million, respectively. Accounts Receivable, net of allowance for doubtful accounts We perform credit evaluations of our customers, and take actions deemed appropriate to mitigate credit risk. Only in certain specific occasions do we require collateral in the form of bank or parental guarantees or guarantee payments. We maintain allowances for potential credit losses based on specific customer review and current financial conditions. See Note 9. Inventories, net Pigment inventories are stated at the lower of actual cost and net realizable value, net of allowances for obsolete and slow-moving inventory. The cost of inventories is determined using the first-in, first-out method. Carrying values include material costs, labor, and associated indirect manufacturing expenses. Costs for materials and supplies, excluding titanium ore, are determined by average cost to acquire. Mineral Sands inventories including titanium ore are stated at the lower of the weighted-average cost of production or market. Inventory costs include those costs directly attributable to products, including all manufacturing overhead but excluding distribution costs. Raw materials are carried at actual cost. We review, annually and at the end of each quarter, the cost of our inventory in comparison to its net realizable value. We also periodically review our inventory for obsolescence. In either case, we record any write-down equal to the difference between the cost of inventory and its estimated net realizable value based on assumptions about alternative uses, market conditions and other factors. Inventories expected to be sold or consumed within twelve months after the balance sheet date are classified as current assets and all other inventories are classified as non-current assets. See Note 10. Long Lived Assets Property, plant and equipment, net is stated at cost less accumulated depreciation, and is depreciated over its estimated useful life using the straight-line method as follows: Land improvements 10 — 20 years Buildings 10 — 40 years Machinery and equipment 3 — 25 years Furniture and fixtures 10 years Maintenance and repairs are expensed as incurred, except for costs of replacements or renewals that improve or extend the lives of existing properties, which are capitalized. Upon retirement or sale, the cost and related accumulated depreciation are removed from the respective account, and any resulting gain or loss is included in “Cost of goods sold” or “Selling, general, and administrative expenses” in the Consolidated Statements of Operations. See Note 11. We capitalize interest costs on major projects that require an extended period of time to complete. See Note 15. Mineral property acquisition costs are capitalized as tangible assets when management determines that probable future benefits consisting of a contribution to future cash inflows have been identified and adequate financial resources are available or are expected to be available as required to meet the terms of property acquisition and anticipated exploration and development expenditures. Mineral leaseholds are depleted over their useful lives as determined under the units of production method. Mineral property exploration costs are expensed as incurred. When it has been determined that a mineral property can be economically developed as a result of establishing proven and probable reserves, the costs incurred to develop such property through the commencement of production are capitalized. See Note 12. Intangible assets are stated at cost less accumulated amortization, and are amortized on a straight-line basis over their estimated useful lives, which range from 3 to 20 years. See Note 13. We evaluate the recoverability of the carrying value of long-lived assets that are held and used whenever events or changes in circumstances indicate that the carrying value may not be recoverable. Under such circumstances, we assess whether the projected undiscounted cash flows of our long-lived assets are sufficient to recover the carrying amount of the asset group being assessed. If the undiscounted projected cash flows are not sufficient, we calculate the impairment amount by discounting the projected cash flows using our weighted-average cost of capital. For assets that satisfy the criteria to be classified as held for sale, an impairment loss, if any, is recognized to the extent the carrying amount exceeds fair value, less cost to sell. The amount of the impairment of long-lived assets is written off against earnings in the period in which the impairment is determined. Business Acquisitions Business acquisitions are accounted for using the acquisition method under Accounting Standards Codification (“ASC”) 805, Business Combinations Long-term Debt Long-term debt is stated net of unamortized original issue premium or discount. Premiums or discounts are amortized using the effective interest method with amortization expense recorded in “Interest and debt expense, net” in the Consolidated Statements of Operations. Deferred debt issuance costs related to a recognized debt liability are presented in the Consolidated Balance Sheets as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts and are amortized using the effective interest method with amortization expense recorded in “Interest and debt expense, net” in the Consolidated Statements of Operations. See Note 15. Asset Retirement Obligations Asset retirement obligations are recorded at their estimated fair value, and accretion expense is recognized over time as the discounted liability is accreted to its expected settlement value. Fair value is measured using expected future cash outflows discounted at our credit-adjusted risk-free interest rate, which are considered Level 3 inputs. We classify accretion expense related to asset retirement obligations as a production cost, which is included in “Cost of goods sold” in the Consolidated Statements of Operations. See Note 16. Environmental Remediation and Other Contingencies We recognize a loss and record an undiscounted liability when litigation has commenced or a claim or assessment has been asserted, or, based on available information, commencement of litigation or assertion of a claim or assessment is probable, and the associated costs can be reasonably estimated. See Note 16. Self-Insurance We are self-insured for certain levels of general and vehicle liability, property, workers’ compensation and health care coverage. The cost of these self-insurance programs is accrued based upon estimated fully developed settlements for known and anticipated claims. Any resulting adjustments to previously recorded reserves are reflected in current operating results. We do not accrue for general or unspecific business risks. Share-based Compensation Equity Restricted Share and Restricted Share Unit Awards Liability Restricted Share Awards - Long-Term Incentive Plan Option Awards Defined Benefit Pension and Postretirement Benefit Plans We recognize the funded status of our defined benefit pension plans and postretirement benefit plans in the Consolidated Balance Sheet. The funded status is measured as the difference between the fair value of plan assets and the benefit obligation at the measurement date. The benefit obligation for the defined benefit plans is the projected benefit obligation (PBO), which represents the actuarial present value of benefits expected to be paid upon retirement based on employee services already rendered and estimated future compensation levels. The benefit obligation for our postretirement benefit plans is the accumulated postretirement benefit obligation (APBO), which represents the actuarial present value of postretirement benefits attributed to employee services already rendered. The fair value of plan assets related to our defined benefit plan represents the current market value of assets held in a trust fund, which is established for the sole benefit of plan participants. If the fair value of plan assets exceeds the benefit obligation, the plan is overfunded, and the excess is recorded as a prepaid pension asset. On the other hand, if the benefit obligation exceeds the fair value of plan assets, the plan is underfunded, and the deficit is recorded as pension and postretirement healthcare benefits obligation in the Consolidated Balance Sheet. The portion of the pension and postretirement healthcare obligations payable within the next 12 months is recorded in accrued liabilities in the Consolidated Balance Sheet. Net periodic pension and postretirement benefit cost represents the aggregation of service cost, interest cost, expected return on plan assets, amortization of prior service costs or credits and actuarial gains or losses previously recognized as a component of OCI and it is recorded in the Consolidated Statement of Operations. Net periodic cost is recorded in cost of goods sold and selling, general and administrative expenses in the Consolidated Statement of Operations based on the employees’ respective functions. Actuarial gains or losses represents the effect of remeasurement on the benefit obligation principally driven by changes in the plan actuarial assumptions. Prior service costs or credits arise from plan amendments. The actuarial gains or losses and prior service costs or credits are initially recognized as a component of Other Comprehensive income in the Consolidated Statement of Comprehensive Income (Loss). Those gains or losses and prior service costs or credits are subsequently recognized as a component of net periodic cost. The measurement of benefit obligations and net periodic cost is based on estimates and assumptions approved by management. These valuations reflect the terms of the plans and use participant-specific information such as compensation, age and years of service, as well as certain assumptions, including estimates of discount rates, expected return on plan assets, rate of compensation increases and mortality rates. Defined Contribution Plans Multiemployer Plan - Recently Adopted Accounting Pronouncements In February 2018, the FASB issued ASU 2018-02, Reclassification of Certain Tax Effects From Accumulated Other Comprehensive Income Income Statement — Reporting Comprehensive Income, In March 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-09, Improvements to Employee Share-Based Payment Accounting Compensation – Stock Compensation In March 2016, the FASB issued ASU 2016-05, Derivatives and Hedging: Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships Derivatives and Hedging In July 2015, as part of its simplification initiative, the FASB issued ASU 2015-11, Simplifying the Measurement of Inventory Recently Issued Accounting Pronouncements In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities In May 2017, the FASB issued ASU 2017-09, Compensation—Stock Compensation (Topic 718): Scope of Modification Accounting In March 2017, the FASB issued ASU 2017-07, Compensation-Retirement Benefits: Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost In January 2017, the FASB issued ASU 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows (Topic 230) In October 2016, the FASB issued ASU 2016-16, Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments In February 2016, the FASB issued ASU 2016-02, Leases In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606) We are substantially complete with our implementation plan for adopting ASU 2014-09 including the evaluation of differences between the existing accounting guidance and Topic 606. Based on the results of our evaluation, we did not identify any changes which will have a material impact to our consolidated financial statements. Similarly, we did not identify any significant impact on our business processes, controls and systems. We are in the process of finalizing the documentation of our accounting policies. We adopted the new standard using the modified retrospective approach effective January 1, 2018.

Discontinued Operations

Discontinued Operations	12 Months Ended
	Dec. 31, 2017
Discontinued Operations [Abstract]
Discontinued Operations	3. Discontinued Operations Concurrent with the announcement of the Cristal Transaction, we expressed intent to begin a process to market our Alkali soda ash business, which met the criteria as held for sale in the third quarter of 2017 and was sold on September 1, 2017. The sale of Alkali is an important step in positioning us as a global leader in the TiO 2 Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity Alkali, which was previously one of our two operating and reportable segments, included certain allocated corporate costs, which have been reallocated to Corporate. The amount of allocated corporate costs was $3 million, $4 million and $3 million respectively, for the years ended December 31, 2017, 2016 and 2015. After the Alkali Sale, we now operate in a single operating and reportable segment, TiO 2 The following table presents the major classes of Alkali’s line items constituting the “Income (loss) from discontinued operations, net of tax” in our Consolidated Statements of Operations: Year Ended December 31, 2017 2016 2015 Net sales $ 521 $ 786 $ 602 Cost of goods sold 448 671 505 Selling, general and administrative expenses (18 ) (25 ) (25 ) Income before income taxes 55 89 72 Income tax provision (1 ) (10 ) (17 ) Loss on sale of discontinued operations, no tax impact (233 ) — — Net income (loss) from discontinued operations, net of tax $ (179 ) $ 79 $ 55 The following table is a summary of the carrying amounts of Alkali’s assets and liabilities included as “Total assets of discontinued operations” and “Total liabilities of discontinued operations” of December 31, 2016: December 31, 2016 Assets Current Assets Accounts receivable, net of allowance for doubtful accounts $ 146 Inventories, net 33 All other current assets 21 Total current assets of discontinued operations 200 Noncurrent Assets Property, plant and equipment, net 739 Mineral leaseholds, net 730 Other long-term assets 2 Total assets of discontinued operations $ 1,671 Liabilities Current Liabilities Accounts payable $ 44 Accrued liabilities 36 All other current liabilities 11 Total current liabilities of discontinued operations 91 All other long-term liabilities 20 Total liabilities of discontinued operations $ 111

Restructuring Expense

Restructuring Expense	12 Months Ended
	Dec. 31, 2017
Restructuring Expense [Abstract]
Restructuring Expense	4. Restructuring Expense Restructuring income (expense) in our Consolidated Statements of Operations consists of charges related to employee severance and associated costs recorded in connection with the global restructuring of our TiO 2 2 2 Restructuring income (expense) during 2017, 2016 and 2015 is as follows: Year Ended December 31, 2017 2016 2015 TiO 2 $ — $ (1 ) $ (21 ) Restructuring Settlement 1 — — $ 1 $ (1 ) $ (21 ) The cumulative amount incurred relating to our TiO 2 Restructuring income (expense) by segment during 2017, 2016 and 2015 was as follows: Year Ended December 31, 2017 2016 2015 TiO 2 $ — $ (1 ) $ (20 ) Corporate 1 — (1 ) Total $ 1 $ (1 ) $ (21 ) A summary in the changes in the liability established for restructuring, which is included in “Accrued liabilities” in the Consolidated Balance Sheets, is as follows: 2017 2016 Balance, January 1, $ — $ 15 Additional provision, net — 1 Cash payments — (16 ) Balance, December 31, $ — $ —

Other Income (Expense), Net

Other Income (Expense), Net	12 Months Ended
	Dec. 31, 2017
Other Income (Expense), Net [Abstract]
Other Income (Expense), Net	5. Other Income (Expense), Net Other income (expense), net is comprised of the following: Year Ended December 31, 2017 2016 2015 Net realized and unrealized foreign currency gains (losses) $ (20 ) $ (31 ) $ 21 Interest income 10 3 7 Pension and postretirement benefit curtailment gains/(settlement losses) (1) — (1 ) — Other, net 1 2 — Total $ (9 ) $ (27 ) $ 28 (1) Losses related to our Netherlands pension plan. See Note 20.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2017
Income Taxes [Abstract]
Income Taxes	6. 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) from continuing operations before income taxes is comprised of the following: Year Ended December 31, 2017 2016 2015 United Kingdom $ (74 ) $ 362 330 Australia (143 ) (145 ) (359 ) International 130 (481 ) (320 ) Income (loss) from continuing operations before income taxes $ (87 ) $ (264 ) $ (349 ) The income tax (provision) benefit is summarized below: Year Ended December 31, 2017 2016 2015 United Kingdom: Current $ (2 ) $ (1 ) $ (1 ) Deferred 1 — — Australian: Current — 65 (17 ) International: Current (2 ) 52 (6 ) Deferred (3 ) 9 1 Income tax (provision) benefit $ (6 ) $ 125 $ (23 ) The following table reconciles the applicable statutory income tax rates to our effective income tax rates for “Income tax (provision) benefit” as reflected in the Consolidated Statements of Operations. Year Ended December 31, 2017 2016 2015 Statutory tax rate 19 % 30 % 30 % Increases (decreases) resulting from: Tax rate differences 53 44 30 U.S. federal tax reform (including rate change) (1,166 ) — — Disallowable expenditures 33 (17 ) (4 ) Valuation allowances 675 80 (68 ) Corporate Reorganization 375 (123 ) — State rate changes 3 (4 ) 13 Withholding taxes — 42 (11 ) Prior year accruals (1 ) (3 ) — Branch taxation — (3 ) 1 Other, net 2 1 2 Effective tax rate (7 )% 47 % (7 )% During the year ended December 31, 2017, Tronox Limited, the public parent which is registered under the laws of the State of Western Australia, became managed and controlled in the U.K. The statutory tax rate in the U.K. at December 31, 2017 was 19%. During 2016 and 2015, Tronox Limited was managed and controlled in Australia which has a statutory tax rate of 30%. On December 22, 2017, the U.S. enacted major tax reform legislation. Our deferred tax impact of that legislation has been included in the effective income tax rate table above as a separate line item. It is almost entirely offset in the Valuation allowances line. The gross deferred tax impacts were primarily from our large deferred tax assets being revalued from the previous U.S. statutory rate of 35% down to the newly enacted rate of 21%, compensation accruals and deferred interest amounts which are no longer expected to be deductible under the new legislation, and a change to the portion of an indefinite lived deferred tax liability we could realize based on the new net operating loss indefinite carryforward period and usage limitation. The effective tax rate for 2017 differs from the United Kingdom statutory rate of 19% primarily due to U.S. tax reform legislation, valuation allowances, and rates different than the United Kingdom statutory rate of 19%. For 2016 and 2015 it differs from the Australian statutory rate of 30% primarily due to valuation allowances, rates different than the Australian statutory rate of 30%, and withholding tax accruals on interest income. During the fourth quarter of 2016, we implemented various steps of an internal corporate restructuring plan to simplify our corporate structure and thereby improve operational, administrative, and commercial synergies within each of our operating segments (the “Corporate Reorganization”). As a result of the Corporate Reorganization, we reduced our cross jurisdictional financing arrangements and consequently reversed the deferred tax assets related to intercompany interest deductions. The related withholding tax amounts were also reversed as a result of the Corporate Reorganization. Additionally, we reduced our deferred tax assets related to loss carryforwards which will no longer be available to utilize. The changes to deferred taxes are offset by valuation allowances and result in no impact to the consolidated provision for income taxes for the year ended December 31, 2016. The net income impact of the Corporate Reorganization was a benefit of $137 million in the fourth quarter of 2016, reflecting the reversal of $139 million of withholding tax accruals, offset by a foreign currency loss of $2 million. For the year ended December 31, 2016, the net income impact was $107 million, reflecting a net reduction in withholding tax accruals of $110 million, offset by of a foreign currency loss of $3 million. Changes in our state apportionment factors and state statutory rate changes caused our overall effective state tax rates to change. Due to the large deferred tax asset created by the Anadarko litigation settlement in 2014, these state rate changes have a material impact on deferred taxes for 2015, 2016 and 2017. These are reflected within the State rate changes line above. The changes to deferred tax are offset by valuation allowances. During 2017, the statutory tax rates on income earned in Australia (30%), the United States (35%), South Africa (28%), and the Netherlands (25%) are higher than the United Kingdom statutory rate of 19%. The statutory tax rate on income earned in Switzerland (8%) and Jersey (0%) are lower than the United Kingdom statutory rate of 19%. Also, we continue to maintain a full valuation allowance in Australia, the Netherlands, and the U.S. Net deferred tax assets (liabilities) at December 31, 2017 and 2016 were comprised of the following: December 31, 2017 2016 Deferred tax assets: Net operating loss and other carryforwards $ 1,834 $ 1,899 Property, plant and equipment, net 81 106 Reserves for environmental remediation and restoration 28 25 Obligations for pension and other employee benefits 49 69 Investments 29 25 Grantor trusts 669 1,055 Inventories, net 7 11 Interest 245 326 Other accrued liabilities 2 6 Other 14 14 Total deferred tax assets 2,958 3,536 Valuation allowance associated with deferred tax assets (2,825 ) (3,357 ) Net deferred tax assets 133 179 December 31, 2017 2016 Deferred tax liabilities: Property, plant and equipment, net (244 ) (237 ) Intangible assets, net (52 ) (86 ) Other (7 ) (7 ) Total deferred tax liabilities (303 ) (330 ) Net deferred tax liability $ (170 ) $ (151 ) Balance sheet classifications: Deferred tax assets — long-term $ 1 $ — Deferred tax liabilities — long-term $ (171 ) $ (151 ) Net deferred tax liability $ (170 ) $ (151 ) The net deferred tax liabilities reflected in the above table include deferred tax assets related to grantor trusts, which were established as Tronox Incorporated emerged from bankruptcy during 2011. The balances relate to the assets contributed to such grantor trusts by Tronox Incorporated and the proceeds from the resolution of previous litigation of $5.2 billion during 2014, which resulted in additional deferred tax assets of $2.0 billion. This increase was fully offset by valuation allowances. During 2016 and 2017, the U.S. net operating loss increased as the grantor trusts spent a portion of the funds received from the litigation. Both the Grantor trusts amount and the Net operating loss and other carryforwards amount above were significantly reduced during 2017 as a result of the U.S. tax reform federal rate change from 35% down to 21%. The reduction to the Net operating loss and other carryforwards line was offset by current year tax losses and by additional net capital losses resulting from the final steps in completing our 2016 Corporate Reorganization. There was a decrease to our valuation allowance of $532 million during 2017, a decrease of $218 million in 2016, and an increase of $229 million in 2015. The table below sets forth the changes, by jurisdiction: December 31, 2017 2016 2015 Australia $ 359 $ (258 ) $ 111 United Kingdom 10 — — United States (899 ) 40 113 The Netherlands (1 ) — 6 South Africa (1 ) — (1 ) Total increase (decrease) in valuation allowances $ (532 ) $ (218 ) $ 229 The decrease to our valuation allowance in the United States in 2017 was primarily the result of the tax reform legislation impacts. The increase to our valuation allowances in both Australia and the United Kingdom during 2017 was to offset deferred tax assets generated from book losses and Corporate Reorganization net capital losses. The decrease to the valuation allowance in The Netherlands is due to $12 million NOL utilization, offset by the effect of foreign currency exchange rates changes between 2016 and 2017 of $11 million. The decrease to our valuation allowance in Australia during 2016 is primarily the result of the Corporate Reorganization. When we reduced our deferred tax assets related to intercompany interest deductions and loss carryforwards which will no longer be available to utilize, it caused a corresponding reduction to the valuation allowance and resulted in no impact to the consolidated provision for income taxes for the year ended December 31, 2016. The increase to our valuation allowance in the United States during 2016 is primarily the result of an increase to our net operating loss partially offset by a reduction to our deferred tax assets caused by a lower effective state income tax rate. The increases to our valuation allowance in Australia and the United States during 2015 are primarily the result of book losses during that year. At December 31, 2017, we maintain full valuation allowances related to the total net deferred tax assets in Australia, the United States, and the Netherlands, 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 our pending acquisition of the Cristal TiO 2 These conclusions were reached by the application of ASC 740, Income Taxes An ownership change occurred during 2012, as a result of the Exxaro Transaction. These ownership changes resulted in a limitation under IRC Sections 382 and 383 related to U.S. net operating losses. We do not expect that the application of these net limitations related to the 2012 ownership change will have any material effect on our U.S. federal income tax liabilities. The Company did not have any transactions during 2017 that triggered an ownership change under IRC Sections 382 and 383. The Company’s ability to use any net operating losses and section 163(j) interest expense carryforwards (which are now subject to Section 382 limitations per the new recently enacted U.S. major tax reform legislation) generated by it could be substantially limited if the Company were to experience another 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 2018, 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. The deferred tax assets generated by tax loss carryforwards in Australia, the United States, and the Netherlands have been fully offset by valuation allowances. The expiration of these carryforwards at December 31, 2017 is shown below. The Australian and South African tax loss carryforwards do not expire. United Kingdom Australia The Netherlands U.S. Federal U.S. State Tax Loss Carryforwards Total 2018 $ — $ — $ — $ — $ 21 $ 21 2019 — — — — 1 1 2020 — — — — 16 16 2021 — — 17 — 2 19 2022 — — 34 — 60 94 Thereafter — — 143 4,114 4,015 8,272 No Expiration 55 636 — — — 691 Total tax loss carryforwards $ 55 $ 636 $ 194 $ 4,114 $ 4,115 $ 9,114 At December 31, 2017, Tronox Limited had foreign subsidiaries with undistributed earnings. Although we would not be subject to income tax on these earnings, amounts totaling $150 million could be subject to withholding tax if distributed. We have made no provision for deferred taxes for Tronox Limited related to these undistributed earnings because they are considered to be indefinitely reinvested outside of the parents’ taxing jurisdictions. The noncurrent liabilities section of our Consolidated Balance Sheet does not reflect any reserves for uncertain tax positions for either 2017 or 2016. Our Australian returns are closed through 2011. However, under Australian tax laws, transfer pricing issues have no limitation period. Our U.S. returns are closed for years through 2012, with the exception of an amendment filed for the 2007 tax year. Our Netherlands returns are closed through 2014. Our South African returns are closed through 2012. 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, additional provisions may be necessary and/or reclassifications of noncurrent tax liabilities to current may occur in the future. On December 22, 2017 the U.S. government enacted the Tax Cuts and Jobs Act (H.R. 1), which creates sweeping tax reform, and the SEC issued Staff Accounting Bulletin 118 (SAB 118), which provides guidance on accounting for tax effects of H.R. 1 under ASC 740. As listed above these acts passed late in the Company’s fiscal year significantly impacted the effective tax rate disclosure for the year ended December 31, 2017. H.R. 1 includes a number of broad and complex changes to the U.S. tax code. The most significant of these changes to the Company is the reduction of the federal corporate tax rate from 35% down to 21%. This change represents the most substantial portion of the amount presented in the effective tax rate as U.S. federal tax reform. The effect of this rate change on the U.S. deferred tax assets and liabilities as well as their associated valuation allowance is considered to be complete. Other provisions of this tax reform have been reasonably estimated but are not yet deemed complete. SAB 118 provides for a measurement period to complete the accounting for income taxes from H.R. 1 that should not extend beyond one year from the enactment date, or December 22, 2018. To the extent that the Company’s accounting for the income tax effects of any provisions in H.R. 1 is incomplete, a reasonable estimate was determinable and this provisional estimate is included in the financial statements. While we are able to make reasonable estimates of the impacts of H.R. 1 on the year ended December 31, 2017, the final impacts may differ from these estimates, due to, among other things, changes in our interpretations and assumptions, additional guidance that may be issued by the IRS or state taxing authorities, and actions not yet taken.

Loss Per Share

Loss Per Share	12 Months Ended
	Dec. 31, 2017
Loss Per Share [Abstract]
Loss Per Share	7. Loss Per Share The computation of basic and diluted loss per share for the periods indicated is as follows: Year Ended December 31, 2017 2016 2015 Numerator – Basic and Diluted: Net income (loss) from continuing operations $ (93 ) $ (139 ) $ (372 ) Less: Net income (loss) from continuing operations attributable to noncontrolling interest 13 1 12 Undistributed net income (loss) from continuing operations attributable to Tronox Limited (106 ) (140 ) (384 ) Percentage allocated to ordinary shares (1) 100 % 100 % 100 % Net income (loss) from continuing operations available to ordinary shares (106 ) (140 ) (384 ) Net income (loss) from discontinued operations available to ordinary shares (179 ) 79 55 Net income (loss) available to ordinary shares $ (285 ) $ (61 ) $ (329 ) Denominator – Basic and Diluted: Weighted-average ordinary shares (in thousands) 119,502 116,161 115,566 Net income (loss) per Ordinary Share (2) : Basic and diluted net income (loss) from continuing operations per ordinary share $ (0.89 ) $ (1.20 ) $ (3.31 ) Basic and diluted net income (loss) from discontinued operations per ordinary share (1.50 ) 0.68 0.47 Basic and diluted net loss per ordinary share $ (2.39 ) $ (0.52 ) $ (2.84 ) (1) Our participating securities do not have a contractual obligation to share in losses; therefore, when we have a net loss, none of the loss is allocated to participating securities. Consequently, for 2017, 2016, and 2015, the two-class method did not have an effect on our net loss per ordinary share calculation, and as such, dividends paid during the year did not impact this calculation. (2) Net loss per ordinary share amounts were calculated from exact, not rounded net loss and share information. 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 were as follows: December 31, 2017 December 31, 2016 December 31, 2015 Shares Average Exercise Price Shares Average Exercise Price Shares Average Exercise Price Options 1,707,133 $ 21.27 1,970,481 $ 21.19 2,189,967 $ 21.15 Series A Warrants 222,939 $ 8.51 1,440,662 $ 8.51 1,354,529 $ 9.63 Series B Warrants 328,563 $ 9.37 1,953,207 $ 9.37 1,833,834 $ 10.63 Restricted share units 5,478,269 $ 11.33 5,587,331 $ 7.19 1,494,027 $ 23.04

Fair Value Measurement

Fair Value Measurement	12 Months Ended
	Dec. 31, 2017
Fair Value Measurement [Abstract]
Fair Value Measurement	8. Fair Value Measurement For financial instruments that are subsequently measured at fair value, the fair value measurement is grouped into levels. See Note 2. At both December 31, 2017 and 2016, our financial instrument measured at fair value was our environmental rehabilitation trust, which amounted to $13 million and was categorized as Level 2. See Note 16. The carrying amounts for cash and cash equivalents, restricted cash, accounts receivable, other current assets, accounts payable, short-term debt, and other current liabilities approximate their fair value because of the short-term nature of these instruments. Our debt is recorded at historical amounts. At December 31, 2017, the fair value of our New Term Loan Facility (defined below) was $2.17 billion and at December 31, 2016, the fair value of the Prior Term Loan (defined below) was $1.5 billion. At December 31, 2016 the fair value of the Senior Notes due 2020, defined below, was $841 million. At December 31, 2017 and 2016, the fair value of the Senior Notes due 2022, defined below, was $609 million and $544 million, respectively. At December 31, 2017 the fair value of the Senior Notes due 2025, defined below, was $463 million. We determined the fair value of the New Term Loan Facility, Prior Term Loan, the Senior Notes due 2020, the Senior Notes due 2022 and the Senior Notes due 2025 using quoted market prices. The fair value hierarchy for the New Term Loan Facility, Prior Term Loan, the Senior Notes due 2020, the Senior Notes due 2022 and the Senior Notes due 2025 is a Level 1 input. The balance outstanding under our UBS Revolver at December 31, 2016 is carried at contracted amounts, which approximates fair value based on the short-term nature of the borrowing and the variable interest rate. The fair value hierarchy for our UBS Revolver is a Level 2 input. See Note 15.

Accounts Receivable, Net of All

Accounts Receivable, Net of Allowance for Doubtful Accounts	12 Months Ended
	Dec. 31, 2017
Accounts Receivable, Net of Allowance for Doubtful Accounts [Abstract]
Accounts Receivable, Net of Allowance for Doubtful Accounts	9. Accounts Receivable, Net of Allowance for Doubtful Accounts Accounts receivable, net of allowance for doubtful accounts, consisted of the following: December 31, 2017 2016 Trade receivables $ 324 $ 271 Other 13 8 Subtotal 337 279 Allowance for doubtful accounts (1 ) (1 ) Accounts receivable, net of allowance for doubtful accounts $ 336 $ 278 Bad debt expense was less than $1 million for each of the years ended 2017, 2016 and 2015. Bad debt expense was recorded in “Selling, general and administrative expenses” in the Consolidated Statements of Operations.

Inventories, net

Inventories, net	12 Months Ended
	Dec. 31, 2017
Inventories, net [Abstract]
Inventories, net	10. Inventories, net Inventories, net consisted of the following: December 31, 2017 2016 Raw materials $ 137 $ 191 Work-in-process 35 35 Finished goods, net 194 190 Materials and supplies, net (1) 110 97 Total 476 513 Less: Inventories, net – non-current (3 ) (14 ) Inventories, net – current $ 473 $ 499 (1) Consists of processing chemicals, maintenance supplies, and spare parts, which will be consumed directly and indirectly in the production of our products. Finished goods includes inventory on consignment of $28 million and $24 million at December 31, 2017 and 2016, respectively. At December 31, 2017 and 2016, inventory obsolescence reserves were $14 million and $17 million, respectively. At December 31, 2017 and December 31, 2016, reserves for lower of cost and net realizable value were $27 million and $26 million, respectively.

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2017
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	11. Property, Plant and Equipment Property, plant and equipment, net of accumulated depreciation, consisted of the following: December 31, 2017 2016 Land and land improvements $ 95 $ 94 Buildings 267 237 Machinery and equipment 1,387 1,275 Construction-in-progress 103 82 Other 41 38 Total 1,893 1,726 Less: accumulated depreciation (778 ) (634 ) Property, plant and equipment, net (1) $ 1,115 $ 1,092 (1) Substantially all of these assets are pledged as collateral for our debt. See Note 15. Depreciation expense related to property, plant and equipment during 2017, 2016, and 2015 was $125 million, $117 million, and $150 million, respectively, of which $122 million, $114 million, and $146 million, respectively, was recorded in “Cost of goods sold” in the Consolidated Statements of Operations. Depreciation expense of $3 million each for 2017 and 2016 and $4 million for 2015 was recorded in “Selling, general and administrative expenses” in the Consolidated Statements of Operations.

Mineral Leaseholds, net

Mineral Leaseholds, net	12 Months Ended
	Dec. 31, 2017
Mineral Leaseholds, net [Abstract]
Mineral Leaseholds, net	12. Mineral Leaseholds, net Mineral leaseholds, net of accumulated depletion, consisted of the following: December 31, 2017 2016 Mineral leaseholds $ 1,303 $ 1,257 Less accumulated depletion (418 ) (380 ) Mineral leaseholds, net $ 885 $ 877 Depletion expense related to mineral leaseholds during 2017, 2016, and 2015 was $32 million, $35 million, and $77 million, respectively, and was recorded in “Cost of goods sold” in the Consolidated Statements of Operations.

Intangible Assets, net

Intangible Assets, net	12 Months Ended
	Dec. 31, 2017
Intangible Assets, net [Abstract]
Intangible Assets, net	13. Intangible Assets, net December 31, 2017 December 31, 2016 Gross Cost Accumulated Amortization Net Carrying Amount Gross Cost Accumulated Amortization Net Carrying Amount Customer relationships $ 291 $ (134 ) $ 157 $ 291 $ (115 ) $ 176 TiO 2 32 (11 ) 21 32 (9 ) 23 Internal-use software 45 (25 ) 20 45 (21 ) 24 Intangible assets, net $ 368 $ (170 ) $ 198 $ 368 $ (145 ) $ 223 Amortization expense related to intangible assets was $25 million each for 2017 and 2016 and $26 million during 2015, respectively, of which $24 million each was recorded during 2017 and 2016 and $25 million was recorded during 2015 in “Selling general and administrative expenses” in the Consolidated Statements of Operations. During 2017, 2016 and 2015, $1 million each of amortization expense was recorded in “Cost of goods sold” in the Consolidated Statements of Operations. Estimated future amortization expense related to intangible assets is $25 million for each of the years from 2018 through 2021, $23 million for 2022 and $75 million thereafter.

Accrued Liabilities

Accrued Liabilities	12 Months Ended
	Dec. 31, 2017
Accrued Liabilities [Abstract]
Accrued Liabilities	14. Accrued Liabilities Accrued liabilities consisted of the following: December 31, 2017 2016 Employee-related costs and benefits $ 72 $ 61 Interest 21 35 Sales rebates 19 20 Taxes other than income taxes 7 9 Other 44 25 Accrued liabilities $ 163 $ 150

Debt

Debt	12 Months Ended
	Dec. 31, 2017
Debt [Abstract]
Debt	15. Debt Debt Refinancing On September 22, 2017, we completed our offering of our Senior Notes due 2025 for an aggregate principal amount of $450 million, the net proceeds of which together with borrowings under our $2.150 billion New Term Loan Facility and the proceeds from the Alkali sale, funded the redemption of the remaining outstanding balance of our Senior Notes due 2020 and we paid off the remaining outstanding balance of our $1.5 billion Prior Term Loan. In addition, we paid off the outstanding short-term borrowings under our UBS Revolver and entered into a new asset-based revolving syndicated facility with Wells Fargo (all defined below). The refinancing of our Senior Notes due 2020 was considered a debt extinguishment in accordance with ASC 470, Debt Short-term Debt During the third quarter of 2017, we repaid the $150 million outstanding balance under the global senior secured asset-based syndicated revolving credit facility with UBS AG (the “UBS Revolver”). Concurrent with entering into the Wells Fargo Revolver, described below, the UBS Revolver was terminated. Unamortized original debt issuance costs of $1 million relating to the UBS Revolver were included in “Gain (loss) on extinguishment of debt” in the Consolidated Statements of Operations for the year ended December 31, 2017. The remaining unamortized balance of original debt issuance costs of $2 million relating to the UBS Revolver will be amortized over the life of the Wells Fargo Revolver. Wells Fargo Revolver On September 22, 2017, we entered into a new global senior secured asset-based syndicated revolving credit facility with Wells Fargo Bank, N.A. (the “Wells Fargo Revolver”). The Wells Fargo Revolver provides 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. Borrowings bear interest at our option, at either an adjusted London Interbank Offered Rate (“LIBOR”) plus an applicable margin that ranges from 1.25% to 1.75%, or a base rate, which is defined to mean the greatest of (a) the administrative agent’s prime rate, (b) the Federal funds effective rate plus 0.50% and (c) the adjusted LIBOR for a one-month period plus 1.00% plus a margin that ranges from 0.25% to 0.75%, in each case, based on the average daily borrowing availability. At December 31, 2017, there were no outstanding revolving credit loans under the Wells Fargo Revolver, excluding $19 million of issued and undrawn letters of credit under the Wells Fargo Revolver. Debt issuance costs associated with the Wells Fargo Revolver of $7 million ($2 million remaining from the UBS Revolver and $5 million incurred for the Wells Fargo Revolver) were included in “Other long-term assets” in the Consolidated Balance Sheets at December 31, 2017 and is amortized over the life of the Wells Fargo Revolver. ABSA Revolving Credit Facility On December 13, 2017, we 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 $61 million at December 31, 2017 exchange rate) maturing on December 13, 2020 (the “New ABSA Revolver”). The New ABSA Revolver replaces our R1.3 billion revolving credit facility (approximately $105 million at December 31, 2017 exchange rate) with ABSA that matured on June 14, 2017 (the “ABSA Revolver”). The New ABSA Revolver bears interest at (i) the base rate (defined as one month Johannesburg Interbank Agreed Rate, which is the mid-market rate for deposits in South African Rand for a period equal to the relevant period which appears on the Reuters Screen SAFEY Page alongside the caption YLD) as of 11h00 Johannesburg time on the first day of the applicable period, plus (ii) the Margin, which ranges from 3.45% to 3.85%, in each case, based on the aggregate loan amount outstanding as a percentage of the total commitments of the ABSA Facility. During 2017 we had no drawdowns or repayments on the New ABSA Revolver. During 2017, 2016 and 2015, we had no drawdowns or repayments on the ABSA Revolver. At December 31, 2016, there was no outstanding borrowings on the ABSA Revolver. Long-term debt, net of an unamortized discount and debt issuance costs, consisted of the following: Original Principal Annual Interest Rate Maturity Date December 31, 2017 December 31, 2016 Prior Term Loan, net of unamortized discount (1) $ 1,500 Variable — $ — $ 1,441 New Term Loan Facility, net of unamortized discount (2) 2,150 Variable 9/22/2024 2,138 — Senior Notes due 2020 900 6.375 % — — 896 Senior Notes due 2022 600 7.50 % 3/15/2022 584 584 Senior Notes due 2025 450 5.75 % 9/22/2025 450 — Lease financing 19 19 Long-term debt 3,191 2,940 Less: Long-term debt due within one year (17 ) (16 ) Debt issuance costs (44 ) (36 ) Long-term debt, net $ 3,130 $ 2,888 (1) Average effective interest rate of 5.1% and 4.9% during 2017 and 2016, respectively. (2) Average effective interest rate of 4.9% during 2017. At December 31, 2017, the scheduled maturities of our long-term debt were as follows: Total Borrowings 2018 17 2019 22 2020 22 2021 23 2022 607 Thereafter 2,512 Total 3,203 Remaining accretion associated with the New Term Loan Facility (12 ) Total borrowings $ 3,191 Prior Term Loan On April 23, 2014, we, along with our wholly owned subsidiary, Tronox Pigments (Netherlands) B.V., and certain named guarantor subsidiaries, entered into a Third Amended and Restated Credit and Guaranty Agreement (the “Third Agreement”) with the lender party thereto and Goldman Sachs Bank USA, as administrative agent. Pursuant to the Third Agreement, we obtained a $1.5 billion senior secured term loan (the “Prior Term Loan”) with a maturity date of March 19, 2020. As mentioned above, on September 22, 2017, we repaid the remaining $1.4 billion outstanding balance of the $1.5 billion Prior Term Loan and entered into the New Term Loan Facility described below. Unamortized original debt discount and issuance costs of $1 million relating to the Prior Term Loan were included in “Gain (loss) on extinguishment of debt” in the Consolidated Statements of Operations for the year ended December 31, 2017. The remaining balance of unamortized original debt discount and issuance costs of $3 million and $13 million, respectively, relating to the Prior Term Loan will continue to be amortized over the life of the New Term Loan Facility. New Term Loan Facility On September 22, 2017, we entered into a new senior secured first lien term loan facility (the “New Term Loan Facility”) with the lenders party thereto and Bank of America, N.A., as administrative agent, with a maturity date of September 22, 2024. The New Term Loan Facility consists of (i) a U.S. dollar term facility in an aggregate principal amount of $1.5 billion (the “New 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, the Blocked Borrower will merge with and into Tronox Finance, and the Blocked New Term Loan will become available to Tronox Finance. If the Cristal Transaction is terminated, the Blocked Term Loan will be repaid to the lenders of such Blocked Term Loan. The proceeds from the Blocked Term Loan are included in “Restricted cash” in the Consolidated Balance Sheets at December 31, 2017. The Blocked Term Loan under the New Term Loan Facility bear interest at the “Applicable Rate” defined by reference to a grid-pricing matrix that relates to our first lien net leverage ratio. Based upon our first lien net leverage ratio the Applicable Rate under the New Term Loan Facility as of December 31, 2017 was 300 basis points plus LIBOR. The New Term Loan Facility was issued net of an original issue discount of $11 million. At December 31, 2017, the unamortized discount was $12 million which includes $3 million relating to the Prior Term Loan. Debt issuance costs of $4 million relating to the New Term Loan Facility were included in “Gain (loss) on extinguishment of debt” in the Consolidated Statements of Operations for the year ended December 31, 2017. Debt issuance costs of $30 million associated with the New Term Loan Facility ($13 million remaining from the Prior Term Loan and $17 million incurred for the New Term Loan Facility) were recorded as a direct reduction of the carrying value of the long-term debt as described below and will be amortized over the life of the New Term Loan Facility. Senior Notes due 2020 On September 25, 2017, we redeemed (the “Redemption”) the $896 million outstanding balance of our $900 million aggregate principal, 6.375% senior notes due 2020 issued by Tronox Finance (the “Senior Notes due 2020”). The total cash payment made in connection with the Redemption was approximately $917 million, and included accrued interest of $7 million and a call premium of $14 million (the “Call Premium”) included in “Gain (loss) on extinguishment of debt” in the Consolidated Statements of Operations. During the year ended December 31, 2016, we repurchased $4 million of face value of the Senior Notes due 2020 at a price of 77% of par, resulting in a net gain of approximately $1 million, which was included in “Gain (loss) on extinguishment of debt” in the Consolidated Statements of Operations. The Senior Notes due 2020 were fully and unconditionally guaranteed on a senior and unsecured basis by us and certain of our subsidiaries. As a result of the Redemption, we are no longer required to present guarantor consolidating financial statements in this Form 10-K for the year ended December 31, 2017. In connection with the Redemption, we recorded a loss on extinguishment of debt of $22 million included in “Gain (loss) on extinguishment of debt” in the Consolidated Statements of Operations, of which $8 million related to unamortized debt issuance costs and $14 million related to the Call Premium. Senior Notes due 2022 We have $600 million aggregate principal amount, 7.50% Senior Notes due 2022 (the “Senior Notes due 2022”) which notes were issued pursuant to an indenture dated March 19, 2015 (the “2022 Indenture”). The Senior Notes due 2022 have not been registered under the Securities Act, and may not be offered or sold in the U.S. absent registration or an applicable exemption from registration requirements. There were no repayments during the year ended December 31, 2017. During the year ended December 31, 2016, we repurchased $16 million of face value of notes at a weighted average price of 76% of par, resulting in a net gain of approximately $3 million, which was included in “Gain (loss) on extinguishment of debt” in the Consolidated Statements of Operations. The Indenture and the Senior Notes due 2022 provide, among other things, that the Senior Notes due 2022 are senior unsecured obligations of Tronox Finance and are guaranteed on a senior and unsecured basis by us and certain of our other subsidiaries. Interest is payable on March 15 and September 15 of each year until their maturity date of March 15, 2022. The terms of the 2022 Indenture, among other things, limit, in certain circumstances, the ability of us to: incur certain additional indebtedness and issue preferred stock; make certain dividends, distributions, investments and other restricted payments; sell certain assets; incur liens; agree to any restrictions on the ability of certain subsidiaries to make payments to us; consolidate or merge with or into, or sell substantially all of our assets to, another person; enter into transactions with affiliates; and enter into new lines of business. At December 31, 2017 and December 31, 2016, debt issuance costs related to the Senior Notes due 2022 of $8 million and $10 million, respectively, were recorded as a direct reduction of the carrying value of the long-term debt as described below . Senior Notes due 2025 On September 22, 2017, Tronox Finance plc, issued 5.75% senior notes due 2025 for an aggregate principal amount of $450 million (the “Senior Notes due 2025”), which notes were issued under an indenture dated September 22, 2017 (the “2025 Indenture”). The 2025 Indenture and the Senior Notes due 2025 provide among other things, that the Senior Notes due 2025 are senior unsecured obligations of Tronox Finance plc and are guaranteed on a senior and unsecured basis by us and certain of our other subsidiaries. The Senior Notes due 2025 have not been registered under the Securities Act, and may not be offered or sold in the U.S. absent registration or an applicable exemption from registration requirements. Interest is payable on April 1 and October 1 of each year beginning on April 1, 2018 until their maturity date of October 1, 2025. The terms of the 2025 Indenture, among other things, limit, in certain circumstances, the ability of us and certain of our subsidiaries to: incur secured indebtedness, engage in certain sale-leaseback transactions and merge, consolidate or sell substantially all of our assets. The terms of the 2025 Indenture also include certain limitations on our non-guarantor subsidiaries incurring indebtedness. Debt issuance costs of $9 million relating to the Senior Notes due 2025 were recorded as a direct reduction of the carrying value of the long-term debt as described below and will be amortized over the life of the Senior Notes due 2025. Liquidity and Capital Resources As of December 31, 2017, we had $232 million available under the $550 million Wells Fargo Revolver, $61 million under the New ABSA Revolver and $1.1 billion in cash and cash equivalents. In addition, as of December 31, 2017 we had restricted cash of $653 million, which included the $650 million of proceeds from the Blocked Term Loan discussed above and $1 million of related interest. Lease Financing We have capital lease obligations in South Africa, which are payable through 2031 at a weighted average interest rate of approximately 14%. At December 31, 2017 and 2016, assets recorded under capital lease obligations were $23 million and $21 million, respectively. Related accumulated amortization was $8 million and $6 million at December 31, 2017 and 2016, respectively. During 2017, 2016, and 2015 we made principal payments of less than $1 million for all periods. At December 31, 2017, future minimum lease payments, including interest, were as follows: Principal Repayments Interest Total Payments 2018 $ 1 $ 3 $ 4 2019 1 3 4 2020 1 2 3 2021 1 2 3 2022 1 2 3 Thereafter 14 10 24 Total $ 19 $ 22 $ 41 Bridge Facility In connection with our acquisition of Alkali in 2015, we entered into a $600 million senior unsecured bridge facility (the “Bridge Facility”). The Bridge Facility was not utilized and terminated with the completion of the purchase of Alkali. During 2015, we incurred $8 million of financing fees related to the Bridge Facility, which were included in “Interest and debt expense, net” in the Consolidated Statements of Operations. Debt Covenants At December 31, 2017, we had no financial covenants in the Wells Fargo Revolver, the New ABSA Revolver and the New Term Loan Facility, however, only the New ABSA Revolver had a financial maintenance covenant that applies to local operations and only when the New ABSA Revolver is drawn upon. Interest and Debt Expense, Net Interest and debt expense, net of capitalized interest in the Consolidated Statements of Operations consisted of the following: Year Ended December 31, 2017 2016 2015 Interest on Prior Term Loan $ 49 $ 67 $ 63 Interest on New Term Loan Facility 26 — — Interest on Senior Notes due 2020 42 57 57 Interest on Senior Notes due 2022 44 44 35 Interest on Senior Notes due 2025 7 — — Amortization of deferred debt issuance costs and discounts on debt 15 11 11 Bridge facility — — 8 Capitalized interest (2 ) (3 ) (6 ) Other 7 9 8 Total interest and debt expense, net $ 188 $ 185 $ 176 In connection with obtaining debt, we incurred debt issuance costs, which are being amortized through the respective maturity dates using the effective interest method for our long-term debt and on a straight line basis for our Wells Fargo Revolver. At December 31, 2017, we had deferred debt issuance costs of $7 million related to the Wells Fargo Revolver, which is recorded in “Other long-term assets” in the Consolidated Balance Sheets. At December 31, 2017, we had $12 million and $27 million of debt discount and debt issuance costs, respectively, related to the New Term Loan Facility, which was recorded as a direct reduction of the carrying value of the long-term debt in the Consolidated Balance Sheets. At December 31, 2017, we had $9 million of debt issuance costs, related to the Senior Notes due 2025, which was recorded as a direct reduction of the carrying value of the long-term debt in the Consolidated Balance Sheets. At December 31, 2017 and December 31, 2016, we had $8 million and $10 million, respectively, of debt issuance costs related to the Senior Notes 2022, which were recorded as a direct reduction of the carrying value of the long-term debt in the Consolidated Balance Sheets.

Asset Retirement Obligations

Asset Retirement Obligations	12 Months Ended
	Dec. 31, 2017
Asset Retirement Obligations [Abstract]
Asset Retirement Obligations	16. Asset Retirement Obligations Asset retirement obligations consist primarily of rehabilitation and restoration costs, landfill capping costs, decommissioning costs, and closure and post-closure costs. Activity related to asset retirement obligations was as follows: Year Ended December 31, 2017 2016 Balance, January 1, $ 76 $ 81 Additions 1 1 Accretion expense 5 5 Remeasurement/translation 5 1 Changes in estimates, including cost and timing of cash flows — (11 ) Settlements/payments (5 ) (1 ) Balance, December 31, $ 82 $ 76 December 31, 2017 2016 Asset retirement obligations were classified as follows: Current portion included in “Accrued liabilities” $ 3 $ 3 Noncurrent portion included in “Asset retirement obligations” 79 73 Asset retirement obligations $ 82 $ 76 We used the following assumptions in determining asset retirement obligations at December 31, 2017: inflation rates between 2.5% - 4.2% per year; credit adjusted risk-free interest rates between 7.0% -17.1%; the life of mines between 12-27 years and the useful life of assets between 4-33 years. During 2016, we amended our lease agreement for our TiO 2 Environmental Rehabilitation Trust In accordance with applicable regulations, we have established an environmental rehabilitation trust for the prospecting and mining operations in South Africa, which receives, holds, and invests funds for the rehabilitation or management of asset retirement obligations. The trustees of the fund are appointed by us, and consist of sufficiently qualified employees capable of fulfilling their fiduciary duties. At both December 31, 2017 and 2016, the environmental rehabilitation trust assets were $13 million, which were recorded in “Other long-term assets” in the Consolidated Balance Sheets.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2017
Commitments and Contingencies [Abstract]
Commitments and Contingencies	17. Commitments and Contingencies Leases At December 31, 2017, minimum rental commitments under non-cancelable operating leases were as follows: Operating 2018 $ 19 2019 8 2020 4 2021 4 2022 3 Thereafter 6 Total $ 44 Purchase and Capital Commitments Letters of Credit Other Matters On December 5, 2017, the U.S. Federal Trade Commission (FTC) filed an administrative complaint against Tronox Limited, the National Industrialization Company of Saudi Arabia (“TASNEE”), National Titanium Dioxide Company Limited (Cristal) and Cristal USA Inc. The complaint alleges that the proposed acquisition by Tronox of the TiO2 business of Cristal would violate Section 7 of the Clayton Antitrust Act and Section 5 of the FTC Act. The administrative complaint seeks, among other things, a permanent injunction to prevent the transaction from being completed. On January 23, 2018, Tronox Limited filed suit against the FTC in the U.S. District Court for the Northern District of Mississippi. The complaint seeks a declaration that Tronox’s proposed acquisition of the TiO2 business of Cristal is lawful under Section 7 of the Clayton Antitrust Act and Section 5 of the FTC Act or, in the alternative, an injunction barring the FTC from seeking to prevent the acquisition at a later date.

Shareholders' Equity

Shareholders' Equity	12 Months Ended
	Dec. 31, 2017
Shareholders' Equity [Abstract]
Shareholders' Equity	18. Shareholders’ Equity The changes in outstanding Class A ordinary shares (“Class A Shares”) and Class B Shares for 2016 and 2017 were as follows: Class A Shares: Balance, January 1, 2016 64,521,851 Shares issued for share-based compensation 732,724 Shares cancelled for share-based compensation (89,062 ) Shares issued upon warrants exercised 159 Balance, December 31, 2016 65,165,672 Shares issued for share-based compensation 3,048,824 Shares cancelled for share-based compensation (623,920 ) Shares issued upon options exercised 165,974 Shares issued upon warrants exercised 2,359,913 Exxaro Share Transaction 22,425,000 Balance, December 31, 2017 92,541,463 Class B Shares: Balance, December 31, 2016 51,154,280 Exxaro Share Transaction (22,425,000 ) Balance, December 31, 2017 28,729,280 Warrants We have outstanding Series A Warrants (the “Series A Warrants”) and Series B Warrants (the “Series B Warrants”), together (the “Warrants”). At December 31, 2017, holders of the Series A Warrants and the Series B Warrants were entitled to purchase 6.02 and 6.03 of Class A Shares, respectively, and receive $12.50 in cash at an exercise price of $51.21 for each Series A Warrant and $56.51 for each Series B Warrant. The Warrants have a seven-year term from the date initially issued and expired on February 14, 2018. A holder may exercise the Warrants by paying the applicable exercise price in cash or exercising on a cashless basis. The Warrants are freely transferable by the holder. At December 31, 2017 and 2016, there were 37,033 and 239,306 Series A Warrants outstanding, respectively, and 54,488 and 323,915 Series B Warrants outstanding, respectively. Dividends During 2017 and 2016, we declared and paid quarterly dividends to holders of our Class A Shares and Class B Shares as follows: Q1 2017 Q2 2017 Q3 2017 Q4 2017 Dividend per share $ 0.045 $ 0.045 $ 0.045 $ 0.045 Total dividend $ 6 $ 6 $ 5 $ 6 Record date (close of business) March 6 May 15 August 21 November 20 Q1 2016 Q2 2016 Q3 2016 Q4 2016 Dividend per share $ 0.25 $ 0.045 $ 0.045 $ 0.045 Total dividend $ 30 $ 5 $ 5 $ 6 Record date (close of business) March 4 May 16 August 17 November 16 Accumulated Other Comprehensive Income (Loss) Attributable to Tronox Limited The tables below present changes in accumulated other comprehensive income (loss) by component for 2017, 2016 and 2015. Cumulative Translation Adjustment Pension Liability Adjustment Unrealized Gains (losses) on Derivatives Total Balance, January 1, 2015 $ (281 ) $ (117 ) $ — $ (398 ) Other comprehensive income (loss) (215 ) 12 — (203 ) Amounts reclassified from accumulated other comprehensive income (loss) — 3 — 3 Balance, December 31, 2015 $ (496 ) $ (102 ) $ — $ (598 ) Other comprehensive income (loss) 88 8 4 100 Amounts reclassified from accumulated other comprehensive income (loss) — 2 (1 ) 1 Balance, December 31, 2016 $ (408 ) $ (92 ) $ 3 $ (497 ) Other comprehensive income (loss) 96 (6 ) (3 ) 87 Amounts reclassified from accumulated other comprehensive income (loss) — 8 (1 ) 7 Balance, December 31, 2017 $ (312 ) $ (90 ) $ (1 ) $ (403 )

Share-based Compensation

Share-based Compensation	12 Months Ended
	Dec. 31, 2017
Share-based Compensation [Abstract]
Share-based Compensation	19. Share-based Compensation Share-based compensation expense consisted of the following: Year Ended December 31, 2017 2016 2015 Restricted shares and restricted share units $ 30 $ 20 $ 15 Options — 2 5 T-Bucks Employee Participation Plan 1 2 2 Total share-based compensation expense (continuing operations) (1) $ 31 $ 24 $ 22 (1) Excludes $2 million, $1 million and less than $1 million of share-based compensation relating to discontinued operations. See Note 3. Tronox Limited Management Equity Incentive Plan On June 15, 2012, we adopted the MEIP, which permits the grant of awards that are comprised of incentive options, nonqualified options, share appreciation rights, restricted shares, restricted share units, performance awards, and other share-based awards, cash payments, and other forms as the compensation committee of the Board of Directors (the “Board”) in its discretion deems appropriate, including any combination of the above. Subject to further adjustment, the maximum number of shares which may be the subject of awards (inclusive of incentive options) is 20,781,225 Class A Shares. These shares were increased by 8,000,000 on the affirmative vote of our shareholders on May 25, 2016. Restricted Shares We did not grant any restricted shares during 2017. The following table presents a summary of activity for 2017: Number of Shares Weighted Average Grant Date Fair Value Outstanding, January 1, 2017 284,400 $ 6.09 Vested (107,928 ) 8.00 Outstanding, December 31, 2017 176,472 $ 4.92 Expected to vest, December 31, 2017 176,472 $ 4.92 At December 31, 2017, there was less than $1 million of unrecognized compensation expense related to nonvested restricted shares, which is expected to be recognized over a weighted-average period of 1.0 years. Since the restricted shares were granted to certain members of our Board, the unrecognized compensation expense was not adjusted for estimated forfeitures. The weighted-average grant-date fair value of restricted shares granted during 2016 and 2015 was $4.16 per share and $22.60 per share, respectively. The total fair value of restricted shares that vested during 2017, 2016 and 2015 was $1 million, $3 million, and $4 million, respectively. Restricted Share Units (“RSUs”) During 2017, 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, 1,075 RSUs vested immediately, 14,053 RSUs vest ratably over a six-month period, 100,160 RSUs vest ratably over a one-year period, 1,951 RSUs vest ratably over a twenty-eight month period, 12,869 RSUs vest ratably over a thirty-one month period and 773,774 RSUs vest ratably over a three-year period, and are valued at the weighted average grant date fair value. For the performance-based awards, 1,949 RSUs cliff vest at the end of twenty-eight months, 154,639 RSUs cliff vest at the end of thirty-one months, 1,145,933 cliff vest at the end of the three years and 883,538 RSUs cliff vest at the end of the forty months. Included in the performance-based awards are 788,588 RSUs for which vesting is determined based on a relative Total Stockholder Return (“TSR”) calculation over the applicable measurement period. The TSR metric is considered a market condition for which we use a Monte Carlo simulation to determine the grant date fair value. 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. If the Cristal Transaction does not close by July 1, 2018, then the Integration Incentive Award granted will be cancelled. The following table presents a summary of activity for 2017: Number of Shares Weighted Average Grant Date Fair Value Outstanding, January 1, 2017 5,587,331 $ 7.19 Granted 3,089,941 17.55 Vested (2,392,662 ) 9.55 Forfeited (806,341 ) 11.83 Outstanding, December 31, 2017 5,478,269 $ 11.33 Expected to vest, December 31, 2017 5,849,495 $ 10.27 At December 31, 2017, there was $33 million of unrecognized compensation expense related to nonvested RSUs, adjusted for estimated forfeitures, which is expected to be recognized over a weighted-average period of 2.0 years. The weighted-average grant-date fair value of RSUs granted during 2017, 2016 and 2015 was $17.55 per unit, $4.07 per unit, and $23.47 per unit, respectively. The total fair value of RSUs that vested during 2017, 2016 and 2015 was $23 million, $10 million and $6 million, respectively. Options The following table presents a summary of activity for 2017: Number of Options Weighted Average Exercise Price Weighted Average Contractual Life (years) Intrinsic Value Outstanding, January 1, 2017 1,970,481 $ 21.19 6.38 $ — Exercised (165,974 ) 20.10 Forfeited (4,273 ) 21.98 Expired (93,101 ) 21.58 Outstanding, December 31, 2017 1,707,133 $ 21.27 4.29 $ 1 Expected to vest, December 31, 2017 794 $ 22.69 7.01 $ — Exercisable, December 31, 2017 1,706,339 $ 21.27 4.29 $ 1 The aggregate intrinsic values in the table represent the total pre-tax intrinsic value (the difference between our share price at the indicated dates and the options’ exercise price, multiplied by the number of in-the-money options) that would have been received by the option holders had all option holders exercised their in-the-money options at the end of the year. The amount will change based on the fair market value of our stock. Total intrinsic value of options exercised during 2017 was $1 million. No options were exercised during 2016 and consequently, there was no related intrinsic value. Total intrinsic value of options exercised during 2015 was less than $1 million. We issue new shares upon the exercise of options. During 2017, we received $3 million in cash for the exercise of stock options. Since no stock options were exercised during 2016, no cash was received. During 2015, we received $3 in cash for the exercise of stock options. At December 31, 2017 and 2016, unrecognized compensation expense related to options, adjusted for estimated forfeitures, was nil and less than $1 million, respectively. We did not issue any options during 2017 and 2016. During 2015, we granted 2,380 with a weighted average grant date fair value of $7.04. Fair value of options granted is determined on the grant date using the Black-Scholes option-pricing model and is recognized in earnings on a straight-line basis over the employee service period of three years, which is the vesting period. The assumptions used in the Black-Scholes option-pricing model on the grant date were as follows: The fair value is based on the closing price of our Class A Shares on the grant date. The risk-free interest rate is based on U.S. Treasury Strips available with a maturity period consistent with the expected life assumption. The expected volatility assumption is based on historical price movements of our peer group. Dividend yield is determined based on the Company’s expected dividend payouts. T-Bucks EPP During 2012, we established the T-Bucks EPP for the benefit of certain qualifying employees of our South African subsidiaries. We funded a T-Bucks Trust (the “Trust”) with R124 million (approximately $15 million), which was used to acquire Class A Shares. On May 31, 2017, the shares held by the Trust became fully vested. The Trust sold 546,403 shares in June 2017 on behalf of the participants who elected to receive cash. The remaining participants elected to receive shares. Long-Term Incentive Plan We have a long-term incentive plan (the “LTIP”) for the benefit of certain qualifying employees of Tronox subsidiaries in South Africa and Australia. The LTIP is classified as a cash settled compensation plan, and is re-measured to fair value at each reporting date. At December 31, 2017 and 2016, the LTIP plan liability was nil and less than $1 million, respectively.

Pension and Other Postretiremen

Pension and Other Postretirement Healthcare Benefits	12 Months Ended
	Dec. 31, 2017
Pension and Other Postretirement Healthcare Benefits [Abstract]
Pension and Other Postretirement Healthcare Benefits	20. Pension and Other Postretirement Healthcare Benefits We sponsor a noncontributory defined benefit retirement plans, the qualified retirement plan in the United States, a collective defined contribution plan in the Netherlands, and a South Africa postretirement healthcare plan. We previously sponsored a defined benefit retirement plan in the Netherlands until it was settled in 2016 as described below. We sponsored a noncontributory defined benefit plan that covered eligible employees of Alkali, which became effective from the acquisition date of Alkali, on April 1, 2015 (the “Alkali Qualified Plan”). Our obligations under the Alkali Qualified Plan transferred with the Alkali Sale and $5 million in actuarial losses and prior service costs previously included in “Accumulated other comprehensive loss” were recognized as a loss within “Income (loss) from discontinued operations, net of tax” on the Statement of Operations for the year ended December 31, 2017. U.S. Plans Qualified Retirement Plan Postretirement Healthcare Plan Foreign Plans The Netherlands Plan In August 2016, we agreed with the Board of Trustees of the Netherlands Pension Plan to settle the VPL portion of the plan. The VPL Plan was a small transition arrangement established in 2005 for the benefit of certain of our Botlek employees, which was added to the Netherlands Pension Plan when it was established in 2007. Under the settlement agreement, we transferred $1 million into accounts established with industrywide Pension Fund for the Graphical Industry (“PGB”) for the benefit of the participants as a full settlement of our obligation under the VPL Plan. Accordingly, during 2016, we recognized a curtailment gain of $1 million included in “Other income (expense), net” in the Consolidated Statement of Operations. This amount had previously been recognized in “Accumulated other comprehensive loss” in the Consolidated Balance Sheet as prior service credits. Consequently, as of August 31, 2016, we remeasured the plan assets and the projected benefit obligation of the Netherlands Pension Plan which resulted in €19 million (approximately $21 million) of actuarial losses which was recognized in “Accumulated other comprehensive loss” during 2016. On November 1, 2016 (the “Settlement Date”), we agreed with the Board of Trustees to settle the remaining portion of the Netherlands Pension Plan. Under the settlement agreement, we transferred the Netherlands Botlek Pension Plan assets of $126 million to the PGB for the benefit of the participants as a full settlement of our obligation under the Pension Plan. Consequently, we derecognized the pension liability from our Consolidated Balance Sheet, resulting in a settlement gain of $31 million, which was recorded in “Accumulated other comprehensive loss” in the Consolidated Balance Sheet at December 31, 2016 and a settlement loss of $2 million, which was recorded in the “Other income (expense) in the Consolidated Statement of Operations for the year ended December 31, 2016. Netherlands Collective Contribution Plan The following table outlines the details of our participation in the CDC Plan for the year ended December 31, 2017. The CDC disclosures provided herein are based on the fund’s 2016 annual report, which is the most recently available public information. Based on the total plan assets and accumulated benefit obligation information in the plan’s annual report, the zone status was green as of December 31, 2016. A green zone status indicates that the plan was at least 80 percent funded. The “FIP/RP Status Pending/Implemented” column indicates whether a financial improvement plan (FIP) or a rehabilitation plan (RP) is either pending or has been implemented. As of December 31, 2017, we are not aware of any financial improvement or rehabilitation plan being implemented or pending. The last column lists the expiration date of the collective-bargaining agreement to which the plan is subject. Pension Protection Act Zone Status Tronox Contributions Pension Fund EIN/Pension Plan Number 2017 2016 FIP/RP Pending/ Implemented 2017 2016 Surcharge Imposed Expiration date of Collective- Bargaining Agreement PGB NA N/A Green No 4 4 No 12/31/2019 On the basis of the information available in the CDC Plan 2016 annual report, our contribution does not constitute more than 5 percent of the total contribution to the plan by all participants. During 2017, the fund did not impose any surcharge on us. South Africa Postretirement Healthcare Plan Benefit Obligations and Funded Status Retirement Plans Postretirement Healthcare Plans Year Ended December Year Ended December 2017 2016 2017 2016 Change in benefit obligations Benefit obligation, beginning of year $ 369 $ 506 $ 8 $ 7 Service cost — — — — Interest cost 15 19 1 1 Net actuarial (gains) losses 25 43 (1 ) — Foreign currency rate changes — (5 ) — — Contributions by plan participants — — — — Curtailment — — — — Settlement — (155 ) — — Plan amendments — — — — Benefits paid (26 ) (34 ) — — Administrative expenses (6 ) (5 ) — — Benefit obligation, end of year 377 369 8 8 Change in plan assets Fair value of plan assets, beginning of year 262 375 — — Actual return on plan assets 33 41 — — Employer contributions (1) 19 15 — — Settlement — (126 ) — — Foreign currency rate changes — (4 ) — — Benefits paid (26 ) (34 ) — — Administrative expenses (6 ) (5 ) — — Fair value of plan assets, end of year 282 262 — — Net over (under) funded status of plans $ (95 ) $ (107 ) $ (8 ) $ (8 ) Classification of amounts recognized in the Consolidated Balance Sheets Accrued liabilities $ — $ — $ — $ — Pension and postretirement healthcare benefits (95 ) (107 ) $ (8 ) (8 ) Total liabilities (95 ) (107 ) (8 ) (8 ) Accumulated other comprehensive (income) loss 92 87 (2 ) (2 ) Total $ (3 ) $ (20 ) $ (10 ) $ (10 ) (1) We expect 2018 contributions to be $21 million for the qualified retirement plan. At December 31, 2017, our qualified retirement plan was in an underfunded status of $95 million. As a result, we have a projected minimum funding requirement of $11 million for 2017, which will be payable in 2018. US Qualified Plan Year Ended December 31, 2017 2016 Accumulated Benefit Obligation $ 377 $ 369 Projected Benefit Obligation (377 ) (369 ) Fair value of plan assets 282 262 Funded status-underfunded $ (95 ) $ (107 ) Expected Benefit Payments 2018 2019 2020 2021 2022 2023-2027 Retirement Plans $ 28 $ 28 $ 27 $ 27 $ 27 $ 119 Postretirement Healthcare Plan $ — $ — $ — $ — $ — $ 2 Retirement and Postretirement Healthcare Expense Retirement Plans Postretirement Healthcare Plans Year Ended December 31, Year Ended December 31, 2017 2016 2015 2017 2016 2015 Net periodic cost: Service cost $ — $ — $ — $ — $ — $ — Interest cost 15 19 19 1 1 1 Expected return on plan assets (15 ) (19 ) (22 ) — — — Net amortization of actuarial loss 3 2 3 — — — Curtailment gains — (1 ) — — — — Settlement losses — 2 — — — — Total net periodic cost - continuing operations $ 3 $ 3 $ — $ 1 $ 1 $ 1 Pretax amounts that are expected to be reclassified from “Accumulated other comprehensive loss” in the Consolidated Balance Sheets to retirement expense during 2018 related to unrecognized actuarial losses are $3 million for the U.S. retirement plans and unrecognized settlement gain of $3 million for the U.S. postretirement healthcare plan. Assumptions — 2017 2016 2015 US Qualified Plan Netherlands Plan US Qualified Plan Netherlands Plan US Qualified Plan Netherlands Plan Discount rate 4.25 % — % 4.75 % 2.25 % 3.75 % 2.25 % Expected return on plan assets 5.64 % — % 5.64 % 4.25 % 5.95 % 4.75 % The following weighted average assumptions were used in estimating the actuarial present value of the plans’ benefit obligations: 2017 2016 2015 US Qualified Plan Netherlands Plan US Qualified Plan Netherlands Plan (1) US Qualified Plan Netherlands Plan Discount rate 3.71 % — % 4.25 % 1.50 % 4.75 % 2.25 % (1) This reflects the rate used to calculate the final Netherlands Plan benefit obligation immediately before the Settlement Date. During 2014, the Society of Actuaries issued an updated mortality table and improvement scale that indicated significant mortality improvement over the prior table. We concluded that the updated table represented our best estimate of mortality. In 2017, the mortality improvement scale that had been used in the 2016 was updated by the Society of Actuaries to reflect actual experience in mortality rates. We updated our mortality assumption accordingly resulting in a decrease of $3 million to our projected benefit obligation as compared to December 31, 2016. The following weighted-average assumptions were used in determining the actuarial present value of the South African Plan: 2017 2016 2015 Discount rate 11.54 % 10.87 % 10.94 % Expected Return on Plan Assets Discount Rate The discount rates selected for estimating the actuarial present value of the benefit obligations of the Netherlands Plan was 1.50% as of the Settlement Date. This rate was based on the long-term Euro corporate bond index rates that correlate with anticipated cash flows associated with future benefit payments. Plan Assets — December 31, 2017 2016 Actual Target Actual Target Qualified Plan: Equity securities 50 % 50 % 36 % 38 % Debt securities 48 48 61 62 Cash and cash equivalents 2 2 3 — Total 100 % 100 % 100 % 100 % The U.S. Qualified Plan is administered by a board-appointed committee that has fiduciary responsibility for the plan’s management. The committee maintains an investment policy stating the guidelines for the performance and allocation of plan assets, performance review procedures and updating of the policy. At least annually, the U.S. plan’s asset allocation guidelines are reviewed in light of evolving risk and return expectations. Substantially all of the plan’s assets are invested with nine mutual fund managers, eight separately managed equity accounts, one fixed-income fund manager and one money-market fund manager. To control risk, equity fund managers are prohibited from entering into the following transactions, (i) investing in commodities, including all futures contracts, (ii) purchasing letter stock, (iii) short selling, and (iv) option trading. In addition, equity fund managers are prohibited from purchasing on margin and are prohibited from purchasing Tronox securities. Equity managers are monitored to ensure investments are in line with their style and are generally permitted to invest in U.S. common stock, U.S. preferred stock, U.S. securities convertible into common stock, common stock of foreign companies listed on major U.S. exchanges, common stock of foreign companies listed on foreign exchanges, covered call writing, and cash and cash equivalents. Fixed-income fund managers are prohibited from investing in (i) direct real estate mortgages or commingled real estate funds, (ii) private placements above certain portfolio thresholds, (iii) tax exempt debt of state and local governments above certain portfolio thresholds, (iv) fixed income derivatives that would cause leverage, (v) guaranteed investment contracts, and (vi) Tronox securities. They are permitted to invest in debt securities issued by the U.S. government, its agencies or instrumentalities, commercial paper rated A3/P3, Federal Deposit Insurance Corporation insured certificates of deposit or bankers’ acceptances and corporate debt obligations. Each fund manager’s portfolio has an average credit rating of A or better. The fair values of pension investments as of December 31, 2017 are summarized below: U.S. Qualified Plan Fair Value Measurement at December 31, 2017, Using: Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Asset category: Commingled Equity Funds $ 94 (1 ) $ — $ — $ 94 Equity Securities 47 (2 ) — — 47 Debt securities: Corporate — 66 (3 ) — 66 Government 68 (4 ) — — 68 Cash & cash equivalents: Commingled cash equivalents fund 7 (5 ) — — 7 Total at fair value $ 216 $ 66 $ — $ 282 (1) For commingled equity funds owned by the funds, fair value is based on observable quoted prices on active exchanges, which are level 1 inputs. (2) For equity securities, fair value is based on observable quoted prices on active exchanges, which are level 1 inputs. (3) For corporate related debt securities, the fair value is based on observable inputs of comparable market transactions, which are level 2 inputs. (4) For government related debt securities, the fair value is based on observable quoted prices on active exchanges, which are level 1 inputs. (5) For commingled cash equivalents funds, fair value is based on observable quoted prices on active exchanges, which are level 1 inputs. The fair values of pension investments as of December 31, 2016 are summarized below: U.S. Qualified Plan Fair Value Measurement at December 31, 2016, Using: Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Asset category: Commingled Equity Funds $ 95 (1 ) $ — $ — $ 95 Debt securities: Corporate — 78 (2 ) — 78 Government 81 (3 ) — — 81 Cash & cash equivalents: Commingled cash equivalents fund 8 (4 ) — — 8 Total at fair value $ 184 $ 78 $ — $ 262 (1) For commingled equity funds owned by the funds, fair value is based on observable quoted prices on active exchanges, which are level 1 inputs. (2) For corporate related debt securities, the fair value is based on observable inputs of comparable market transactions, which are level 2 inputs. (3) For government related debt securities, the fair value is based on observable quoted prices on active exchanges, which are level 1 inputs. (4) For commingled cash equivalents funds, fair value is based on observable quoted prices on active exchanges, which are level 1 inputs. Defined Contribution Plans U.S. Savings Investment Plan In 2006, we established the U.S. Savings Investment Plan (the “SIP”), a qualified defined contribution plan under section 401(k) of the Internal Revenue Code. Under the SIP, our regular full-time and part-time employees contribute a portion of their earnings, and we match these contributions up to a predefined threshold. Our matching contribution is 100% of the first 6% of employee contributions. Effective January 1, 2013, we established a profit sharing contribution at 6% of employees’ pay (“discretionary contribution”). The discretionary contribution is subject to our Board of Directors’ approval each year. The Board approved discretionary contribution of 6% of pay for 2017, 2016 and 2015. Our matching contribution to the SIP vests immediately; however, our discretionary contribution is subject to vesting conditions that must be satisfied over a three-year vesting period. Contributions under the SIP, including our match, are invested in accordance with the investment options elected by plan participants. Compensation expenses associated with our matching contribution to the SIP was $4 million, $3 million and $4 million during 2017, 2016 and 2015, respectively, which was included in “Selling, general and administrative expenses” in the Consolidated Statements of Operations. Compensation expense associated with our discretionary contribution was $5 million in 2017 and $4 million each in 2016 and 2015, which was included in “Selling, general and administrative expenses” in the Consolidated Statements of Operations. U.S. Benefit Restoration Plan In 2006, we established the U.S. Benefit Restoration Plan (the “BRP”), a nonqualified defined contribution plan, for employees whose eligible compensation is expected to exceed the IRS compensation limits for qualified plans. Under the BRP, participants can contribute up to 20% of their annual compensation and incentive. Our matching contribution under the BRP is the same as the SIP. Our matching contribution under this plan vests immediately to plan participants. Contributions under the BRP, including our match, are invested in accordance with the investment options elected by plan participants. Compensation expense associated with our matching contribution to the BRP was $1 million each during 2017, 2016 and 2015 which was included in “Selling, general and administrative expenses” in the Consolidated Statements of Operations.

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2017
Related Party Transactions [Abstract]
Related Party Transactions	21. Related Party Transactions Exxaro We had service level agreements with Exxaro for research and development that expired during the third quarter of 2017. We also had service level agreements with Exxaro for services such as tax preparation and information technology, which expired during 2015. Such service level agreements amounted to expenses of $1 million each during 2017 and 2016 and $2 million during 2015 which was included in “Selling general and administrative expense” in the Consolidated Statements of Operations. Additionally, we had a professional service agreement with Exxaro related to the Fairbreeze construction project, which ended in January 2017. We made payments to Exxaro of less than $1 million during 2017, $2 million during 2016 and $3 million during 2015, which were capitalized in “Property, plant and equipment, net” in our Consolidated Balance Sheets. At both December 31, 2017 and 2016, we had less than $1 million of related party payables, which were recorded in “Accounts payable” in our Consolidated Balance Sheets.

Segment Information

Segment Information	12 Months Ended
	Dec. 31, 2017
Segment Information [Abstract]
Segment Information	22. Segment Information Segment performance is evaluated based on segment operating income (loss), which represents the results of segment operations before unallocated costs, such as general corporate expenses not identified to a specific segment, interest expense, other income (expense), net and income tax expense or benefit. Net sales and income (loss) from operations were as follows: Year Ended December 31, 2017 2016 2015 Net sales (TiO 2 ) $ 1,698 $ 1,309 $ 1,510 TiO 2 $ 261 $ 6 $ (127 ) Corporate (123 ) (62 ) (74 ) Income (loss) from operations 138 (56 ) (201 ) Interest and debt expense, net (188 ) (185 ) (176 ) Gain (loss) on extinguishment of debt (28 ) 4 — Other income (expense), net (9 ) (27 ) 28 Income (loss) from continuing operations before income taxes $ (87 ) $ (264 ) $ (349 ) Net sales to external customers, by geographic region, based on country of production, were as follows: Year Ended December 31, 2017 2016 2015 U.S. operations $ 663 $ 570 $ 621 International operations: Australia 452 352 380 South Africa 350 200 313 The Netherlands 233 187 196 Total net sales $ 1,698 $ 1,309 $ 1,510 Net sales from external customers for each similar product were as follows: Year Ended December 31, 2017 2016 2015 Pigment $ 1,211 $ 966 $ 976 Titanium feedstock and co-products 434 286 426 Electrolytic 53 57 108 Total net sales $ 1,698 $ 1,309 $ 1,510 During 2017, 2016 and 2015 our ten largest third-party TiO 2 Depreciation, amortization and depletion were as follows: Year Ended December 31, 2017 2016 2015 TiO 2 $ 177 $ 171 $ 247 Corporate 5 6 6 Total depreciation, amortization and depletion $ 182 $ 177 $ 253 Capital expenditures were as follows: Year Ended December 31, 2017 2016 2015 TiO 2 $ 89 $ 84 $ 164 Corporate 2 2 1 Total capital expenditures $ 91 $ 86 $ 165 Total assets of continuing operations were as follows: December 31, 2017 2016 TiO 2 $ 3,058 $ 2,991 Corporate 1,806 302 Total $ 4,864 $ 3,293 Property, plant and equipment, net and mineral leaseholds, net, by geographic region, were as follows: December 31, 2017 2016 U.S. operations $ 193 $ 194 International operations: South Africa 919 844 Australia 849 896 The Netherlands 39 35 Total $ 2,000 $ 1,969

Quarterly Results of Operations

Quarterly Results of Operations (Unaudited)	12 Months Ended
	Dec. 31, 2017
Quarterly Results of Operations (Unaudited) [Abstract]
Quarterly Results of Operations (Unaudited)	23. Quarterly Results of Operations (Unaudited) The following represents our unaudited quarterly results for the years ended December 31, 2017 and 2016. These quarterly results were prepared in conformity with generally accepted accounting principles and reflect all adjustments that are, in the opinion of management, necessary for a fair statement of the results, and were of a normal recurring nature. Unaudited quarterly results for 2017: 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Net sales $ 378 $ 421 $ 435 $ 464 Cost of goods sold 315 327 329 339 Gross profit 63 94 106 125 Net income (loss) from continuing operations (53 ) (17 ) (25 ) 2 Net income (loss) from discontinued operations, net of tax 15 22 (216 ) (1) — Net income (loss) (2) (38 ) 5 (241 ) 2 Net income (loss) attributable to noncontrolling interest 3 2 6 2 Net income (loss) attributable to Tronox Limited (2) $ (41 ) $ 3 $ (247 ) $ — Income (loss) from continuing operations per share, basic and diluted $ (0.48 ) $ (0.16 ) $ (0.26 ) $ — Income (loss) from discontinued operations per share, basic and diluted $ 0.13 $ 0.18 $ (1.81 ) $ — (1) Includes a loss of $233 million on the Alkali Sale. (2) During the fourth quarter of 2017, we recorded out-of-period adjustments that should have been recorded previously that decreased net income (loss) from continuing operations by $2 million and decreased income from continuing operations per share by $0.01. After evaluating the quantitative and qualitative aspects of the adjustments, we concluded the effect of these adjustments, individually and in the aggregate, was not material to our previously issued interim and annual consolidated financial statements and is not material to our 2017 consolidated financial statements. Unaudited quarterly results for 2016: 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Net sales $ 285 $ 333 $ 339 $ 352 Cost of goods sold 291 295 291 298 Gross profit (loss) (6 ) 38 48 54 Net income (loss) from continuing operations (114 ) (62 ) (62 ) 99 Net income (loss) from discontinued operations, net of tax 20 12 23 24 Net income (loss) (94 ) (50 ) (39 ) 123 Net income (loss) attributable to noncontrolling interest (1 ) 2 (2 ) 2 Net income (loss) attributable to Tronox Limited $ (93 ) $ (52 ) $ (37 ) $ 121 Income (loss) from continuing operations per share, basic $ (0.97 ) $ (0.55 ) $ (0.53 ) $ 0.84 Income (loss) from continuing operations per share, diluted $ (0.97 ) $ (0.55 ) $ (0.53 ) $ 0.81 Income (loss) from discontinued operations per share, basic $ 0.17 $ 0.11 $ 0.20 $ 0.21 Income (loss) from discontinued operations per share, diluted $ 0.17 $ 0.11 $ 0.20 $ 0.20

The Company (Policies)

The Company (Policies)	12 Months Ended
	Dec. 31, 2017
The Company [Abstract]
Basis of Presentation	Basis of Presentation We are considered a domestic company in Australia and, as such, are required to report in Australia under International Financial Reporting Standards (“IFRS”). Additionally, as we are not considered a “foreign private issuer” in the U.S., we are required to comply with the reporting and other requirements imposed by the U.S. securities law on U.S. domestic issuers, which, among other things, requires reporting under accounting principles generally accepted in the United States of America (“U.S. GAAP”). The consolidated financial statements included in this Form 10-K are prepared in conformity with U.S. GAAP. We publish our consolidated financial statements, in both U.S. GAAP and IFRS, in U.S. dollars. Exxaro has a 26% ownership interest in each of our Tronox KZN Sands (Pty) Ltd. and Tronox Mineral Sands (Pty) Ltd. subsidiaries in order to comply with the ownership requirements of the Black Economic Empowerment (“BEE”) legislation in South Africa. We account for such ownership interest as “Noncontrolling interest” in our consolidated financial statements. Our consolidated financial statements include the accounts of all majority-owned subsidiary companies. All intercompany balances and transactions have been eliminated in consolidation. Certain prior period amounts have been reclassified to conform to the manner and presentation in the current period.
Revision of Previously Issued Consolidated Financial Statements	Revision of Previously Issued Consolidated Financial Statements During the three months ended March 31, 2017, we identified a misstatement in our selling, general, and administrative expense for certain prior periods related to a liability resulting from a non-timely filing with a statutory authority. The aggregate misstatement is $11 million, which impacts our previously issued consolidated statements of operations, comprehensive loss, balance sheets and cash flows as of and for the years ended December 31, 2015 and 2016, and the unaudited condensed consolidated financial statements for the third and fourth quarters and corresponding year-to-date periods of 2015, and each quarter and corresponding year-to-date periods of 2016. In accordance with Staff Accounting Bulletin (“SAB”) No. 99, Materiality, and SAB No. 108, Considering the Effects of Prior Year Misstatements when Quantifying Misstatements in Current Year Financial Statements The effects on our consolidated financial statements are as follows: Consolidated Statement of Operations Year Ended December 31, 2016 Year Ended December 31, 2015 As Reported (1) Adjustment Revised As Reported (1) Adjustment Revised Net sales $ 1,309 $ — $ 1,309 $ 1,510 $ — $ 1,510 Cost of goods sold 1,175 — 1,175 1,487 4 1,491 Gross profit 134 — 134 23 (4 ) 19 Selling, general and administrative expenses (185 ) (4 ) (189 ) (192 ) (7 ) (199 ) Income (loss) from operations (52 ) (4 ) (56 ) (190 ) (11 ) (201 ) Other income (expense), net (27 ) — (27 ) 28 — 28 Income (loss) from continuing operations before income taxes (260 ) (4 ) (264 ) (338 ) (11 ) (349 ) Net income (loss) from continuing operations (135 ) (4 ) (139 ) (362 ) (10 ) (372 ) Income (loss) from discontinued operations, net of tax 77 2 79 55 — 55 Net loss attributable to Tronox Limited (59 ) (2 ) (61 ) (318 ) (11 ) (329 ) Net income (loss) per share from continuing operations, basic and diluted (1.17 ) (0.03 ) (1.20 ) (3.22 ) (0.09 ) (3.31 ) Net income (loss) per share from discontinued operations, basic and diluted 0.67 0.01 0.68 0.47 — 0.47 Weighted average shares outstanding, basic and diluted (in thousands) 116,161 116,161 116,161 115,566 115,566 115,566 Consolidated Statements of Comprehensive Income (Loss) Year Ended December 31, 2016 Year Ended December 31, 2015 As Reported Adjustment Revised As Reported Adjustment Revised Net loss $ (58 ) $ (2 ) $ (60 ) $ (307 ) $ (10 ) $ (317 ) Total comprehensive income (loss) 74 (2 ) 72 (584 ) (10 ) (594 ) Comprehensive income (loss) attributable to Tronox Limited 42 (2 ) 40 (518 ) (11 ) (529 ) Consolidated Balance Sheet Year Ended December 31, 2016 As Reported (1) Adjustment Revised Current assets of continuing operations $ 1,067 $ — $ 1,067 Total assets of discontinued operations 1,668 3 1,671 Total current assets 2,735 3 2,738 Total assets 4,961 3 4,964 Accrued liabilities 138 11 149 Current liabilities of continuing operations 443 10 453 Total liabilities of discontinued operations 110 1 111 Total current liabilities 553 11 564 Total liabilities 3,800 11 3,811 Accumulated deficit (13 ) (6 ) (19 ) Accumulated other comprehensive loss (495 ) (2 ) (497 ) Total Tronox Limited shareholders’ equity 1,017 (8 ) 1,009 Total equity 1,161 (8 ) 1,153 Total liabilities and equity 4,961 3 4,964 (1) Amounts reflect the results of Alkali as discontinued operations . Consolidated Statement of Cash Flows There was no net impact to operating, investing and financing cash flows from the revisions for continuing operations for the years ended December 31, 2016 and 2015.
Use of Estimates	Use of Estimates 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.

Significant Accounting Polici33

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2017
Significant Accounting Policies [Abstract]
Foreign Currency	Foreign Currency The U.S. dollar is the functional currency for our operations, except for our South African operations, whose functional currency is the Rand, and our European operations, whose functional currency is the Euro. We determine the functional currency of each subsidiary based on a number of factors, including the predominant currency for revenues, expenditures and borrowings. Adjustments from the remeasurement of non-functional currency monetary assets and liabilities are recorded in “Other income (expense), net” in the Consolidated Statements of Operations. When the subsidiary’s functional currency is not the U.S. dollar, translation adjustments resulting from translating the functional currency financial statements into U.S. dollar equivalents are recorded in “Accumulated other comprehensive loss” in the Consolidated Balance Sheets. Gains and losses on intercompany foreign currency transactions that are not expected to be settled in the foreseeable future are reported in the same manner as translation adjustments.
Revenue Recognition	Revenue Recognition Revenue is recognized when risk of loss and title to the product is transferred to the customer, pricing is fixed or determinable, and collection is reasonably assured. All amounts billed to a customer in a sales transaction related to shipping and handling represent revenues earned and are reported as “Net sales” in the Consolidated Statements of Operations. Accruals are made for sales returns, rebates and other allowances, which are recorded in “Net sales” in the Consolidated Statements of Operations, and are based on our historical experience and current business conditions.
Cost of Goods Sold	Cost of Goods Sold Cost of goods sold includes costs for purchasing, receiving, manufacturing, and distributing products, including raw materials, energy, labor, depreciation, depletion, shipping and handling, freight, warehousing, and other production costs.
Research and Development	Research and Development Research and development costs, included in “Selling, general and administrative expenses” in the Consolidated Statements of Operation comprising of salaries, building costs, utilities, administrative expenses, and allocations of corporate costs, were $8 million, $9 million, and $11 million during 2017, 2016, and 2015, respectively, and were expensed as incurred.
Selling, General and Administrative Expenses	Selling, General and Administrative Expenses Selling, general and administrative expenses include costs related to marketing, agent commissions, and legal and administrative functions such as corporate management, human resources, information technology, investor relations, accounting, treasury, and tax compliance.
Income Taxes	Income Taxes We use the asset and liability method of accounting for income taxes. The estimation of the amounts of income taxes involves the interpretation of complex tax laws and regulations and how foreign taxes affect domestic taxes, as well as the analysis of the realizability of deferred tax assets, tax audit findings, and uncertain tax positions. Deferred tax assets and liabilities are determined based on temporary differences between the financial reporting and tax bases of assets and liabilities using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. A valuation allowance is provided against a deferred tax asset when it is more likely than not that all or some portion of the deferred tax asset will not be realized. We periodically assess the likelihood that we will be able to recover our deferred tax assets, and reflect any changes in our estimates in the valuation allowance, with a corresponding adjustment to earnings or other comprehensive income (loss), as appropriate. All available positive and negative evidence is weighted to determine whether a valuation allowance should be recorded. The amount of income taxes we pay is subject to ongoing audits by federal, state, and foreign tax authorities, which may result in proposed assessments. Our estimate for the potential outcome for any uncertain tax issue is highly judgmental. We assess our income tax positions, and record tax benefits for all years subject to examination based upon our evaluation of the facts, circumstances, and information available at the reporting date. For those tax positions for which it is more likely than not that a tax benefit will be sustained, we record the amount that has a greater than 50% likelihood of being realized upon settlement with a taxing authority that has full knowledge of all relevant information. Interest and penalties are accrued as part of tax expense, where applicable. If we do not believe that it is more likely than not that a tax benefit will be sustained, no tax benefit is recognized. See Note 6.
Earnings Per Share	Earnings per Share Basic and diluted earnings per share are calculated using the two-class method. Under the two-class method, earnings used to determine basic earnings per share are reduced by an amount allocated to participating securities. Participating securities include restricted shares issued under the Tronox Management Equity Incentive Plan (the “MEIP”) (see Note 19) and the T-Bucks Employee Participation Plan (“T-Bucks EPP”) (see Note 19), both of which contain non-forfeitable dividend rights. Our unexercised options, unexercised Series A and Series B Warrants (see Note 18), and unvested restricted share units do not contain non-forfeitable rights to dividends and, as such, are not considered in the calculation of basic earnings per share. Our unvested restricted shares do not have a contractual obligation to share in losses; therefore, when we record a net loss, none of the loss is allocated to participating securities. Consequently, in periods of net loss, the two-class method does not have an effect on basic loss per share. Diluted earnings per share is calculated by dividing net earnings allocable to ordinary shares by the weighted-average number of ordinary shares outstanding for the period, as adjusted for the potential dilutive effect of non-participating restricted share units, options, and Series A and Series B Warrants. The options and Series A and Series B Warrants are included in the calculation of diluted earnings per ordinary share utilizing the treasury stock method. See Note 7.
Fair Value Measurement	Fair Value Measurement We measure fair value on a recurring basis utilizing valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs, to the extent possible, and consider counterparty credit risk in our assessment of fair value. The fair value hierarchy is as follows: • Level 1 – Quoted prices in active markets for identical assets and liabilities; • Level 2 – Quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets and liabilities in markets that are not active or other inputs that are observable or can be corroborated by observable market data; and, • Level 3 – Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets and liabilities See Note 8.
Cash and Cash Equivalents	Cash and Cash Equivalents We consider all investments with original maturities of three months or less to be cash equivalents. We maintain cash and cash equivalents in bank deposit and money market accounts that may exceed federally insured limits. The financial institutions where our cash and cash equivalents are held are generally highly rated and geographically dispersed, and we have a policy to limit the amount of credit exposure with any one institution. We have not experienced any losses in such accounts and believe we are not exposed to significant credit risk. At December 31, 2017, included in restricted cash was $651 million related to our Blocked Term Loan (defined below) See Note 15. Upon consummation of the Cristal acquisition, the Blocked Term Loan will become available to Tronox Finance. See Note 15. At December 31, 2017, 2016 and 2015, we had restricted cash in Australia related to outstanding performance bonds of $2 million, $3 million and $5 million, respectively.
Accounts Receivable, net of allowance for doubtful accounts	Accounts Receivable, net of allowance for doubtful accounts We perform credit evaluations of our customers, and take actions deemed appropriate to mitigate credit risk. Only in certain specific occasions do we require collateral in the form of bank or parental guarantees or guarantee payments. We maintain allowances for potential credit losses based on specific customer review and current financial conditions. See Note 9.
Inventories, net	Inventories, net Pigment inventories are stated at the lower of actual cost and net realizable value, net of allowances for obsolete and slow-moving inventory. The cost of inventories is determined using the first-in, first-out method. Carrying values include material costs, labor, and associated indirect manufacturing expenses. Costs for materials and supplies, excluding titanium ore, are determined by average cost to acquire. Mineral Sands inventories including titanium ore are stated at the lower of the weighted-average cost of production or market. Inventory costs include those costs directly attributable to products, including all manufacturing overhead but excluding distribution costs. Raw materials are carried at actual cost. We review, annually and at the end of each quarter, the cost of our inventory in comparison to its net realizable value. We also periodically review our inventory for obsolescence. In either case, we record any write-down equal to the difference between the cost of inventory and its estimated net realizable value based on assumptions about alternative uses, market conditions and other factors. Inventories expected to be sold or consumed within twelve months after the balance sheet date are classified as current assets and all other inventories are classified as non-current assets. See Note 10.
Long Lived Assets	Long Lived Assets Property, plant and equipment, net is stated at cost less accumulated depreciation, and is depreciated over its estimated useful life using the straight-line method as follows: Land improvements 10 — 20 years Buildings 10 — 40 years Machinery and equipment 3 — 25 years Furniture and fixtures 10 years Maintenance and repairs are expensed as incurred, except for costs of replacements or renewals that improve or extend the lives of existing properties, which are capitalized. Upon retirement or sale, the cost and related accumulated depreciation are removed from the respective account, and any resulting gain or loss is included in “Cost of goods sold” or “Selling, general, and administrative expenses” in the Consolidated Statements of Operations. See Note 11. We capitalize interest costs on major projects that require an extended period of time to complete. See Note 15. Mineral property acquisition costs are capitalized as tangible assets when management determines that probable future benefits consisting of a contribution to future cash inflows have been identified and adequate financial resources are available or are expected to be available as required to meet the terms of property acquisition and anticipated exploration and development expenditures. Mineral leaseholds are depleted over their useful lives as determined under the units of production method. Mineral property exploration costs are expensed as incurred. When it has been determined that a mineral property can be economically developed as a result of establishing proven and probable reserves, the costs incurred to develop such property through the commencement of production are capitalized. See Note 12. Intangible assets are stated at cost less accumulated amortization, and are amortized on a straight-line basis over their estimated useful lives, which range from 3 to 20 years. See Note 13. We evaluate the recoverability of the carrying value of long-lived assets that are held and used whenever events or changes in circumstances indicate that the carrying value may not be recoverable. Under such circumstances, we assess whether the projected undiscounted cash flows of our long-lived assets are sufficient to recover the carrying amount of the asset group being assessed. If the undiscounted projected cash flows are not sufficient, we calculate the impairment amount by discounting the projected cash flows using our weighted-average cost of capital. For assets that satisfy the criteria to be classified as held for sale, an impairment loss, if any, is recognized to the extent the carrying amount exceeds fair value, less cost to sell. The amount of the impairment of long-lived assets is written off against earnings in the period in which the impairment is determined.
Business Acquisitions	Business Acquisitions Business acquisitions are accounted for using the acquisition method under Accounting Standards Codification (“ASC”) 805, Business Combinations
Long-term Debt	Long-term Debt Long-term debt is stated net of unamortized original issue premium or discount. Premiums or discounts are amortized using the effective interest method with amortization expense recorded in “Interest and debt expense, net” in the Consolidated Statements of Operations. Deferred debt issuance costs related to a recognized debt liability are presented in the Consolidated Balance Sheets as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts and are amortized using the effective interest method with amortization expense recorded in “Interest and debt expense, net” in the Consolidated Statements of Operations. See Note 15.
Asset Retirement Obligations	Asset Retirement Obligations Asset retirement obligations are recorded at their estimated fair value, and accretion expense is recognized over time as the discounted liability is accreted to its expected settlement value. Fair value is measured using expected future cash outflows discounted at our credit-adjusted risk-free interest rate, which are considered Level 3 inputs. We classify accretion expense related to asset retirement obligations as a production cost, which is included in “Cost of goods sold” in the Consolidated Statements of Operations. See Note 16.
Environmental Remediation and Other Contingencies	Environmental Remediation and Other Contingencies We recognize a loss and record an undiscounted liability when litigation has commenced or a claim or assessment has been asserted, or, based on available information, commencement of litigation or assertion of a claim or assessment is probable, and the associated costs can be reasonably estimated. See Note 16.
Self-Insurance	Self-Insurance We are self-insured for certain levels of general and vehicle liability, property, workers’ compensation and health care coverage. The cost of these self-insurance programs is accrued based upon estimated fully developed settlements for known and anticipated claims. Any resulting adjustments to previously recorded reserves are reflected in current operating results. We do not accrue for general or unspecific business risks.
Share-based Compensation	Share-based Compensation Equity Restricted Share and Restricted Share Unit Awards Liability Restricted Share Awards - Long-Term Incentive Plan Option Awards
Defined Benefit Pension and Postretirement Benefit Plans	Defined Benefit Pension and Postretirement Benefit Plans We recognize the funded status of our defined benefit pension plans and postretirement benefit plans in the Consolidated Balance Sheet. The funded status is measured as the difference between the fair value of plan assets and the benefit obligation at the measurement date. The benefit obligation for the defined benefit plans is the projected benefit obligation (PBO), which represents the actuarial present value of benefits expected to be paid upon retirement based on employee services already rendered and estimated future compensation levels. The benefit obligation for our postretirement benefit plans is the accumulated postretirement benefit obligation (APBO), which represents the actuarial present value of postretirement benefits attributed to employee services already rendered. The fair value of plan assets related to our defined benefit plan represents the current market value of assets held in a trust fund, which is established for the sole benefit of plan participants. If the fair value of plan assets exceeds the benefit obligation, the plan is overfunded, and the excess is recorded as a prepaid pension asset. On the other hand, if the benefit obligation exceeds the fair value of plan assets, the plan is underfunded, and the deficit is recorded as pension and postretirement healthcare benefits obligation in the Consolidated Balance Sheet. The portion of the pension and postretirement healthcare obligations payable within the next 12 months is recorded in accrued liabilities in the Consolidated Balance Sheet. Net periodic pension and postretirement benefit cost represents the aggregation of service cost, interest cost, expected return on plan assets, amortization of prior service costs or credits and actuarial gains or losses previously recognized as a component of OCI and it is recorded in the Consolidated Statement of Operations. Net periodic cost is recorded in cost of goods sold and selling, general and administrative expenses in the Consolidated Statement of Operations based on the employees’ respective functions. Actuarial gains or losses represents the effect of remeasurement on the benefit obligation principally driven by changes in the plan actuarial assumptions. Prior service costs or credits arise from plan amendments. The actuarial gains or losses and prior service costs or credits are initially recognized as a component of Other Comprehensive income in the Consolidated Statement of Comprehensive Income (Loss). Those gains or losses and prior service costs or credits are subsequently recognized as a component of net periodic cost. The measurement of benefit obligations and net periodic cost is based on estimates and assumptions approved by management. These valuations reflect the terms of the plans and use participant-specific information such as compensation, age and years of service, as well as certain assumptions, including estimates of discount rates, expected return on plan assets, rate of compensation increases and mortality rates. Defined Contribution Plans Multiemployer Plan -
Recently Adopted Accounting Pronouncements	Recently Adopted Accounting Pronouncements In February 2018, the FASB issued ASU 2018-02, Reclassification of Certain Tax Effects From Accumulated Other Comprehensive Income Income Statement — Reporting Comprehensive Income, In March 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-09, Improvements to Employee Share-Based Payment Accounting Compensation – Stock Compensation In March 2016, the FASB issued ASU 2016-05, Derivatives and Hedging: Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships Derivatives and Hedging In July 2015, as part of its simplification initiative, the FASB issued ASU 2015-11, Simplifying the Measurement of Inventory
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities In May 2017, the FASB issued ASU 2017-09, Compensation—Stock Compensation (Topic 718): Scope of Modification Accounting In March 2017, the FASB issued ASU 2017-07, Compensation-Retirement Benefits: Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost In January 2017, the FASB issued ASU 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows (Topic 230) In October 2016, the FASB issued ASU 2016-16, Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments In February 2016, the FASB issued ASU 2016-02, Leases In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606) We are substantially complete with our implementation plan for adopting ASU 2014-09 including the evaluation of differences between the existing accounting guidance and Topic 606. Based on the results of our evaluation, we did not identify any changes which will have a material impact to our consolidated financial statements. Similarly, we did not identify any significant impact on our business processes, controls and systems. We are in the process of finalizing the documentation of our accounting policies. We adopted the new standard using the modified retrospective approach effective January 1, 2018.

The Company (Tables)

The Company (Tables)	12 Months Ended
	Dec. 31, 2017
The Company [Abstract]
Revision of Previously Issued Consolidated Financial Statements	The effects on our consolidated financial statements are as follows: Consolidated Statement of Operations Year Ended December 31, 2016 Year Ended December 31, 2015 As Reported (1) Adjustment Revised As Reported (1) Adjustment Revised Net sales $ 1,309 $ — $ 1,309 $ 1,510 $ — $ 1,510 Cost of goods sold 1,175 — 1,175 1,487 4 1,491 Gross profit 134 — 134 23 (4 ) 19 Selling, general and administrative expenses (185 ) (4 ) (189 ) (192 ) (7 ) (199 ) Income (loss) from operations (52 ) (4 ) (56 ) (190 ) (11 ) (201 ) Other income (expense), net (27 ) — (27 ) 28 — 28 Income (loss) from continuing operations before income taxes (260 ) (4 ) (264 ) (338 ) (11 ) (349 ) Net income (loss) from continuing operations (135 ) (4 ) (139 ) (362 ) (10 ) (372 ) Income (loss) from discontinued operations, net of tax 77 2 79 55 — 55 Net loss attributable to Tronox Limited (59 ) (2 ) (61 ) (318 ) (11 ) (329 ) Net income (loss) per share from continuing operations, basic and diluted (1.17 ) (0.03 ) (1.20 ) (3.22 ) (0.09 ) (3.31 ) Net income (loss) per share from discontinued operations, basic and diluted 0.67 0.01 0.68 0.47 — 0.47 Weighted average shares outstanding, basic and diluted (in thousands) 116,161 116,161 116,161 115,566 115,566 115,566 Consolidated Statements of Comprehensive Income (Loss) Year Ended December 31, 2016 Year Ended December 31, 2015 As Reported Adjustment Revised As Reported Adjustment Revised Net loss $ (58 ) $ (2 ) $ (60 ) $ (307 ) $ (10 ) $ (317 ) Total comprehensive income (loss) 74 (2 ) 72 (584 ) (10 ) (594 ) Comprehensive income (loss) attributable to Tronox Limited 42 (2 ) 40 (518 ) (11 ) (529 ) Consolidated Balance Sheet Year Ended December 31, 2016 As Reported (1) Adjustment Revised Current assets of continuing operations $ 1,067 $ — $ 1,067 Total assets of discontinued operations 1,668 3 1,671 Total current assets 2,735 3 2,738 Total assets 4,961 3 4,964 Accrued liabilities 138 11 149 Current liabilities of continuing operations 443 10 453 Total liabilities of discontinued operations 110 1 111 Total current liabilities 553 11 564 Total liabilities 3,800 11 3,811 Accumulated deficit (13 ) (6 ) (19 ) Accumulated other comprehensive loss (495 ) (2 ) (497 ) Total Tronox Limited shareholders’ equity 1,017 (8 ) 1,009 Total equity 1,161 (8 ) 1,153 Total liabilities and equity 4,961 3 4,964 (1) Amounts reflect the results of Alkali as discontinued operations .

Significant Accounting Polici35

Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2017
Significant Accounting Policies [Abstract]
Estimated Useful Lives for Property, Plant and Equipment	Property, plant and equipment, net is stated at cost less accumulated depreciation, and is depreciated over its estimated useful life using the straight-line method as follows: Land improvements 10 — 20 years Buildings 10 — 40 years Machinery and equipment 3 — 25 years Furniture and fixtures 10 years

Discontinued Operations (Tables

Discontinued Operations (Tables)	12 Months Ended
	Dec. 31, 2017
Discontinued Operations [Abstract]
Financial Information of Discontinued Operations	The following table presents the major classes of Alkali’s line items constituting the “Income (loss) from discontinued operations, net of tax” in our Consolidated Statements of Operations: Year Ended December 31, 2017 2016 2015 Net sales $ 521 $ 786 $ 602 Cost of goods sold 448 671 505 Selling, general and administrative expenses (18 ) (25 ) (25 ) Income before income taxes 55 89 72 Income tax provision (1 ) (10 ) (17 ) Loss on sale of discontinued operations, no tax impact (233 ) — — Net income (loss) from discontinued operations, net of tax $ (179 ) $ 79 $ 55 The following table is a summary of the carrying amounts of Alkali’s assets and liabilities included as “Total assets of discontinued operations” and “Total liabilities of discontinued operations” of December 31, 2016: December 31, 2016 Assets Current Assets Accounts receivable, net of allowance for doubtful accounts $ 146 Inventories, net 33 All other current assets 21 Total current assets of discontinued operations 200 Noncurrent Assets Property, plant and equipment, net 739 Mineral leaseholds, net 730 Other long-term assets 2 Total assets of discontinued operations $ 1,671 Liabilities Current Liabilities Accounts payable $ 44 Accrued liabilities 36 All other current liabilities 11 Total current liabilities of discontinued operations 91 All other long-term liabilities 20 Total liabilities of discontinued operations $ 111

Restructuring Expense (Tables)

Restructuring Expense (Tables)	12 Months Ended
	Dec. 31, 2017
Restructuring Expense [Abstract]
Restructuring Income (Expense)	Restructuring income (expense) during 2017, 2016 and 2015 is as follows: Year Ended December 31, 2017 2016 2015 TiO 2 $ — $ (1 ) $ (21 ) Restructuring Settlement 1 — — $ 1 $ (1 ) $ (21 ) The cumulative amount incurred relating to our TiO 2 Restructuring income (expense) by segment during 2017, 2016 and 2015 was as follows: Year Ended December 31, 2017 2016 2015 TiO 2 $ — $ (1 ) $ (20 ) Corporate 1 — (1 ) Total $ 1 $ (1 ) $ (21 )
Summary of Changes in Restructuring Liability	A summary in the changes in the liability established for restructuring, which is included in “Accrued liabilities” in the Consolidated Balance Sheets, is as follows: 2017 2016 Balance, January 1, $ — $ 15 Additional provision, net — 1 Cash payments — (16 ) Balance, December 31, $ — $ —

Other Income (Expense), Net (Ta

Other Income (Expense), Net (Tables)	12 Months Ended
	Dec. 31, 2017
Other Income (Expense), Net [Abstract]
Schedule of Other Income (Expense), Net	Other income (expense), net is comprised of the following: Year Ended December 31, 2017 2016 2015 Net realized and unrealized foreign currency gains (losses) $ (20 ) $ (31 ) $ 21 Interest income 10 3 7 Pension and postretirement benefit curtailment gains/(settlement losses) (1) — (1 ) — Other, net 1 2 — Total $ (9 ) $ (27 ) $ 28 (1) Losses related to our Netherlands pension plan. See Note 20.

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2017
Income Taxes [Abstract]
Income (Loss) From Continuing Operations Before Income Taxes	Income (loss) from continuing operations before income taxes is comprised of the following: Year Ended December 31, 2017 2016 2015 United Kingdom $ (74 ) $ 362 330 Australia (143 ) (145 ) (359 ) International 130 (481 ) (320 ) Income (loss) from continuing operations before income taxes $ (87 ) $ (264 ) $ (349 )
Summary of Income Tax (Provision) Benefit	The income tax (provision) benefit is summarized below: Year Ended December 31, 2017 2016 2015 United Kingdom: Current $ (2 ) $ (1 ) $ (1 ) Deferred 1 — — Australian: Current — 65 (17 ) International: Current (2 ) 52 (6 ) Deferred (3 ) 9 1 Income tax (provision) benefit $ (6 ) $ 125 $ (23 )
Effective Income Tax Rate Reconciliation	The following table reconciles the applicable statutory income tax rates to our effective income tax rates for “Income tax (provision) benefit” as reflected in the Consolidated Statements of Operations. Year Ended December 31, 2017 2016 2015 Statutory tax rate 19 % 30 % 30 % Increases (decreases) resulting from: Tax rate differences 53 44 30 U.S. federal tax reform (including rate change) (1,166 ) — — Disallowable expenditures 33 (17 ) (4 ) Valuation allowances 675 80 (68 ) Corporate Reorganization 375 (123 ) — State rate changes 3 (4 ) 13 Withholding taxes — 42 (11 ) Prior year accruals (1 ) (3 ) — Branch taxation — (3 ) 1 Other, net 2 1 2 Effective tax rate (7 )% 47 % (7 )%
Components of Net Deferred Tax Assets (Liabilities)	Net deferred tax assets (liabilities) at December 31, 2017 and 2016 were comprised of the following: December 31, 2017 2016 Deferred tax assets: Net operating loss and other carryforwards $ 1,834 $ 1,899 Property, plant and equipment, net 81 106 Reserves for environmental remediation and restoration 28 25 Obligations for pension and other employee benefits 49 69 Investments 29 25 Grantor trusts 669 1,055 Inventories, net 7 11 Interest 245 326 Other accrued liabilities 2 6 Other 14 14 Total deferred tax assets 2,958 3,536 Valuation allowance associated with deferred tax assets (2,825 ) (3,357 ) Net deferred tax assets 133 179 December 31, 2017 2016 Deferred tax liabilities: Property, plant and equipment, net (244 ) (237 ) Intangible assets, net (52 ) (86 ) Other (7 ) (7 ) Total deferred tax liabilities (303 ) (330 ) Net deferred tax liability $ (170 ) $ (151 ) Balance sheet classifications: Deferred tax assets — long-term $ 1 $ — Deferred tax liabilities — long-term $ (171 ) $ (151 ) Net deferred tax liability $ (170 ) $ (151 )
Schedule of Changes in Valuation Allowance by Jurisdiction	The table below sets forth the changes, by jurisdiction: December 31, 2017 2016 2015 Australia $ 359 $ (258 ) $ 111 United Kingdom 10 — — United States (899 ) 40 113 The Netherlands (1 ) — 6 South Africa (1 ) — (1 ) Total increase (decrease) in valuation allowances $ (532 ) $ (218 ) $ 229
Schedule of Expiration of Tax Loss Carryforwards	The expiration of these carryforwards at December 31, 2017 is shown below. The Australian and South African tax loss carryforwards do not expire. United Kingdom Australia The Netherlands U.S. Federal U.S. State Tax Loss Carryforwards Total 2018 $ — $ — $ — $ — $ 21 $ 21 2019 — — — — 1 1 2020 — — — — 16 16 2021 — — 17 — 2 19 2022 — — 34 — 60 94 Thereafter — — 143 4,114 4,015 8,272 No Expiration 55 636 — — — 691 Total tax loss carryforwards $ 55 $ 636 $ 194 $ 4,114 $ 4,115 $ 9,114

Loss Per Share (Tables)

Loss Per Share (Tables)	12 Months Ended
	Dec. 31, 2017
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: Year Ended December 31, 2017 2016 2015 Numerator – Basic and Diluted: Net income (loss) from continuing operations $ (93 ) $ (139 ) $ (372 ) Less: Net income (loss) from continuing operations attributable to noncontrolling interest 13 1 12 Undistributed net income (loss) from continuing operations attributable to Tronox Limited (106 ) (140 ) (384 ) Percentage allocated to ordinary shares (1) 100 % 100 % 100 % Net income (loss) from continuing operations available to ordinary shares (106 ) (140 ) (384 ) Net income (loss) from discontinued operations available to ordinary shares (179 ) 79 55 Net income (loss) available to ordinary shares $ (285 ) $ (61 ) $ (329 ) Denominator – Basic and Diluted: Weighted-average ordinary shares (in thousands) 119,502 116,161 115,566 Net income (loss) per Ordinary Share (2) : Basic and diluted net income (loss) from continuing operations per ordinary share $ (0.89 ) $ (1.20 ) $ (3.31 ) Basic and diluted net income (loss) from discontinued operations per ordinary share (1.50 ) 0.68 0.47 Basic and diluted net loss per ordinary share $ (2.39 ) $ (0.52 ) $ (2.84 ) (1) Our participating securities do not have a contractual obligation to share in losses; therefore, when we have a net loss, none of the loss is allocated to participating securities. Consequently, for 2017, 2016, and 2015, the two-class method did not have an effect on our net loss per ordinary share calculation, and as such, dividends paid during the year did not impact this calculation. (2) Net loss per ordinary share amounts were calculated from exact, not rounded net loss and share information.
Computation of Anti-Dilutive Shares	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 were as follows: December 31, 2017 December 31, 2016 December 31, 2015 Shares Average Exercise Price Shares Average Exercise Price Shares Average Exercise Price Options 1,707,133 $ 21.27 1,970,481 $ 21.19 2,189,967 $ 21.15 Series A Warrants 222,939 $ 8.51 1,440,662 $ 8.51 1,354,529 $ 9.63 Series B Warrants 328,563 $ 9.37 1,953,207 $ 9.37 1,833,834 $ 10.63 Restricted share units 5,478,269 $ 11.33 5,587,331 $ 7.19 1,494,027 $ 23.04

Accounts Receivable, Net of A41

Accounts Receivable, Net of Allowance for Doubtful Accounts (Tables)	12 Months Ended
	Dec. 31, 2017
Accounts Receivable, Net of Allowance for Doubtful Accounts [Abstract]
Accounts Receivable, Net of Allowance for Doubtful Accounts	Accounts receivable, net of allowance for doubtful accounts, consisted of the following: December 31, 2017 2016 Trade receivables $ 324 $ 271 Other 13 8 Subtotal 337 279 Allowance for doubtful accounts (1 ) (1 ) Accounts receivable, net of allowance for doubtful accounts $ 336 $ 278

Inventories, net (Tables)

Inventories, net (Tables)	12 Months Ended
	Dec. 31, 2017
Inventories, net [Abstract]
Components of Inventories, Net	Inventories, net consisted of the following: December 31, 2017 2016 Raw materials $ 137 $ 191 Work-in-process 35 35 Finished goods, net 194 190 Materials and supplies, net (1) 110 97 Total 476 513 Less: Inventories, net – non-current (3 ) (14 ) Inventories, net – current $ 473 $ 499 (1) Consists of processing chemicals, maintenance supplies, and spare parts, which will be consumed directly and indirectly in the production of our products.

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2017
Property, Plant and Equipment [Abstract]
Schedule of Property, Plant and Equipment	Property, plant and equipment, net of accumulated depreciation, consisted of the following: December 31, 2017 2016 Land and land improvements $ 95 $ 94 Buildings 267 237 Machinery and equipment 1,387 1,275 Construction-in-progress 103 82 Other 41 38 Total 1,893 1,726 Less: accumulated depreciation (778 ) (634 ) Property, plant and equipment, net (1) $ 1,115 $ 1,092 (1) Substantially all of these assets are pledged as collateral for our debt. See Note 15.

Mineral Leaseholds, net (Tables

Mineral Leaseholds, net (Tables)	12 Months Ended
	Dec. 31, 2017
Mineral Leaseholds, net [Abstract]
Summary of Mineral Leaseholds, Net	Mineral leaseholds, net of accumulated depletion, consisted of the following: December 31, 2017 2016 Mineral leaseholds $ 1,303 $ 1,257 Less accumulated depletion (418 ) (380 ) Mineral leaseholds, net $ 885 $ 877

Intangible Assets, net (Tables)

Intangible Assets, net (Tables)	12 Months Ended
	Dec. 31, 2017
Intangible Assets, net [Abstract]
Components of Intangible Assets, Net of Accumulated Amortization	December 31, 2017 December 31, 2016 Gross Cost Accumulated Amortization Net Carrying Amount Gross Cost Accumulated Amortization Net Carrying Amount Customer relationships $ 291 $ (134 ) $ 157 $ 291 $ (115 ) $ 176 TiO 2 32 (11 ) 21 32 (9 ) 23 Internal-use software 45 (25 ) 20 45 (21 ) 24 Intangible assets, net $ 368 $ (170 ) $ 198 $ 368 $ (145 ) $ 223

Accrued Liabilities (Tables)

Accrued Liabilities (Tables)	12 Months Ended
	Dec. 31, 2017
Accrued Liabilities [Abstract]
Components of Accrued Liabilities	Accrued liabilities consisted of the following: December 31, 2017 2016 Employee-related costs and benefits $ 72 $ 61 Interest 21 35 Sales rebates 19 20 Taxes other than income taxes 7 9 Other 44 25 Accrued liabilities $ 163 $ 150

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2017
Debt [Abstract]
Components of 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 December 31, 2017 December 31, 2016 Prior Term Loan, net of unamortized discount (1) $ 1,500 Variable — $ — $ 1,441 New Term Loan Facility, net of unamortized discount (2) 2,150 Variable 9/22/2024 2,138 — Senior Notes due 2020 900 6.375 % — — 896 Senior Notes due 2022 600 7.50 % 3/15/2022 584 584 Senior Notes due 2025 450 5.75 % 9/22/2025 450 — Lease financing 19 19 Long-term debt 3,191 2,940 Less: Long-term debt due within one year (17 ) (16 ) Debt issuance costs (44 ) (36 ) Long-term debt, net $ 3,130 $ 2,888 (1) Average effective interest rate of 5.1% and 4.9% during 2017 and 2016, respectively. (2) Average effective interest rate of 4.9% during 2017.
Scheduled Maturities of Long-term Debt	At December 31, 2017, the scheduled maturities of our long-term debt were as follows: Total Borrowings 2018 17 2019 22 2020 22 2021 23 2022 607 Thereafter 2,512 Total 3,203 Remaining accretion associated with the New Term Loan Facility (12 ) Total borrowings $ 3,191
Schedule of Future Minimum Lease Payments Including Interest	At December 31, 2017, future minimum lease payments, including interest, were as follows: Principal Repayments Interest Total Payments 2018 $ 1 $ 3 $ 4 2019 1 3 4 2020 1 2 3 2021 1 2 3 2022 1 2 3 Thereafter 14 10 24 Total $ 19 $ 22 $ 41
Summary of Interest and Debt Expense, Net	Interest and debt expense, net of capitalized interest in the Consolidated Statements of Operations consisted of the following: Year Ended December 31, 2017 2016 2015 Interest on Prior Term Loan $ 49 $ 67 $ 63 Interest on New Term Loan Facility 26 — — Interest on Senior Notes due 2020 42 57 57 Interest on Senior Notes due 2022 44 44 35 Interest on Senior Notes due 2025 7 — — Amortization of deferred debt issuance costs and discounts on debt 15 11 11 Bridge facility — — 8 Capitalized interest (2 ) (3 ) (6 ) Other 7 9 8 Total interest and debt expense, net $ 188 $ 185 $ 176

Asset Retirement Obligations (T

Asset Retirement Obligations (Tables)	12 Months Ended
	Dec. 31, 2017
Asset Retirement Obligations [Abstract]
Activity Related to Asset Retirement Obligations	Activity related to asset retirement obligations was as follows: Year Ended December 31, 2017 2016 Balance, January 1, $ 76 $ 81 Additions 1 1 Accretion expense 5 5 Remeasurement/translation 5 1 Changes in estimates, including cost and timing of cash flows — (11 ) Settlements/payments (5 ) (1 ) Balance, December 31, $ 82 $ 76 December 31, 2017 2016 Asset retirement obligations were classified as follows: Current portion included in “Accrued liabilities” $ 3 $ 3 Noncurrent portion included in “Asset retirement obligations” 79 73 Asset retirement obligations $ 82 $ 76

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2017
Commitments and Contingencies [Abstract]
Minimum Rental Commitments under Non-Cancelable Operating Leases	At December 31, 2017, minimum rental commitments under non-cancelable operating leases were as follows: Operating 2018 $ 19 2019 8 2020 4 2021 4 2022 3 Thereafter 6 Total $ 44

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2017
Shareholders' Equity [Abstract]
Changes in Outstanding Ordinary Shares	The changes in outstanding Class A ordinary shares (“Class A Shares”) and Class B Shares for 2016 and 2017 were as follows: Class A Shares: Balance, January 1, 2016 64,521,851 Shares issued for share-based compensation 732,724 Shares cancelled for share-based compensation (89,062 ) Shares issued upon warrants exercised 159 Balance, December 31, 2016 65,165,672 Shares issued for share-based compensation 3,048,824 Shares cancelled for share-based compensation (623,920 ) Shares issued upon options exercised 165,974 Shares issued upon warrants exercised 2,359,913 Exxaro Share Transaction 22,425,000 Balance, December 31, 2017 92,541,463 Class B Shares: Balance, December 31, 2016 51,154,280 Exxaro Share Transaction (22,425,000 ) Balance, December 31, 2017 28,729,280
Schedule of Dividends Declared and Paid	During 2017 and 2016, we declared and paid quarterly dividends to holders of our Class A Shares and Class B Shares as follows: Q1 2017 Q2 2017 Q3 2017 Q4 2017 Dividend per share $ 0.045 $ 0.045 $ 0.045 $ 0.045 Total dividend $ 6 $ 6 $ 5 $ 6 Record date (close of business) March 6 May 15 August 21 November 20 Q1 2016 Q2 2016 Q3 2016 Q4 2016 Dividend per share $ 0.25 $ 0.045 $ 0.045 $ 0.045 Total dividend $ 30 $ 5 $ 5 $ 6 Record date (close of business) March 4 May 16 August 17 November 16
Changes in Accumulated Other Comprehensive Income (Loss) by Component	The tables below present changes in accumulated other comprehensive income (loss) by component for 2017, 2016 and 2015. Cumulative Translation Adjustment Pension Liability Adjustment Unrealized Gains (losses) on Derivatives Total Balance, January 1, 2015 $ (281 ) $ (117 ) $ — $ (398 ) Other comprehensive income (loss) (215 ) 12 — (203 ) Amounts reclassified from accumulated other comprehensive income (loss) — 3 — 3 Balance, December 31, 2015 $ (496 ) $ (102 ) $ — $ (598 ) Other comprehensive income (loss) 88 8 4 100 Amounts reclassified from accumulated other comprehensive income (loss) — 2 (1 ) 1 Balance, December 31, 2016 $ (408 ) $ (92 ) $ 3 $ (497 ) Other comprehensive income (loss) 96 (6 ) (3 ) 87 Amounts reclassified from accumulated other comprehensive income (loss) — 8 (1 ) 7 Balance, December 31, 2017 $ (312 ) $ (90 ) $ (1 ) $ (403 )

Share-based Compensation (Table

Share-based Compensation (Tables)	12 Months Ended
	Dec. 31, 2017
Share-based Compensation [Abstract]
Components of Share-based Compensation Expense	Share-based compensation expense consisted of the following: Year Ended December 31, 2017 2016 2015 Restricted shares and restricted share units $ 30 $ 20 $ 15 Options — 2 5 T-Bucks Employee Participation Plan 1 2 2 Total share-based compensation expense (continuing operations) (1) $ 31 $ 24 $ 22 (1) Excludes $2 million, $1 million and less than $1 million of share-based compensation relating to discontinued operations. See Note 3.
Summary of Activity for Restricted Shares	The following table presents a summary of activity for 2017: Number of Shares Weighted Average Grant Date Fair Value Outstanding, January 1, 2017 284,400 $ 6.09 Vested (107,928 ) 8.00 Outstanding, December 31, 2017 176,472 $ 4.92 Expected to vest, December 31, 2017 176,472 $ 4.92
Summary of Activity for Restricted Stock Share Units (RSUs)	The following table presents a summary of activity for 2017: Number of Shares Weighted Average Grant Date Fair Value Outstanding, January 1, 2017 5,587,331 $ 7.19 Granted 3,089,941 17.55 Vested (2,392,662 ) 9.55 Forfeited (806,341 ) 11.83 Outstanding, December 31, 2017 5,478,269 $ 11.33 Expected to vest, December 31, 2017 5,849,495 $ 10.27
Summary of Activity for Options	The following table presents a summary of activity for 2017: Number of Options Weighted Average Exercise Price Weighted Average Contractual Life (years) Intrinsic Value Outstanding, January 1, 2017 1,970,481 $ 21.19 6.38 $ — Exercised (165,974 ) 20.10 Forfeited (4,273 ) 21.98 Expired (93,101 ) 21.58 Outstanding, December 31, 2017 1,707,133 $ 21.27 4.29 $ 1 Expected to vest, December 31, 2017 794 $ 22.69 7.01 $ — Exercisable, December 31, 2017 1,706,339 $ 21.27 4.29 $ 1

Pension and Other Postretirem52

Pension and Other Postretirement Healthcare Benefits (Tables)	12 Months Ended
	Dec. 31, 2017
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Schedule of Collective Contribution Plan	The following table outlines the details of our participation in the CDC Plan for the year ended December 31, 2017. The CDC disclosures provided herein are based on the fund’s 2016 annual report, which is the most recently available public information. Based on the total plan assets and accumulated benefit obligation information in the plan’s annual report, the zone status was green as of December 31, 2016. A green zone status indicates that the plan was at least 80 percent funded. The “FIP/RP Status Pending/Implemented” column indicates whether a financial improvement plan (FIP) or a rehabilitation plan (RP) is either pending or has been implemented. As of December 31, 2017, we are not aware of any financial improvement or rehabilitation plan being implemented or pending. The last column lists the expiration date of the collective-bargaining agreement to which the plan is subject. Pension Protection Act Zone Status Tronox Contributions Pension Fund EIN/Pension Plan Number 2017 2016 FIP/RP Pending/ Implemented 2017 2016 Surcharge Imposed Expiration date of Collective- Bargaining Agreement PGB NA N/A Green No 4 4 No 12/31/2019
Summary of Benefit Obligations and Plan Assets Associated With Benefit Plans	The following provides a reconciliation of beginning and ending benefit obligations, beginning and ending plan assets, funded status, and balance sheet classification of our pension and postretirement healthcare plans as of and for the years ended December 31, 2017 and 2016. The benefit obligations and plan assets associated with our principal benefit plans are measured on December 31. Retirement Plans Postretirement Healthcare Plans Year Ended December Year Ended December 2017 2016 2017 2016 Change in benefit obligations Benefit obligation, beginning of year $ 369 $ 506 $ 8 $ 7 Service cost — — — — Interest cost 15 19 1 1 Net actuarial (gains) losses 25 43 (1 ) — Foreign currency rate changes — (5 ) — — Contributions by plan participants — — — — Curtailment — — — — Settlement — (155 ) — — Plan amendments — — — — Benefits paid (26 ) (34 ) — — Administrative expenses (6 ) (5 ) — — Benefit obligation, end of year 377 369 8 8 Change in plan assets Fair value of plan assets, beginning of year 262 375 — — Actual return on plan assets 33 41 — — Employer contributions (1) 19 15 — — Settlement — (126 ) — — Foreign currency rate changes — (4 ) — — Benefits paid (26 ) (34 ) — — Administrative expenses (6 ) (5 ) — — Fair value of plan assets, end of year 282 262 — — Net over (under) funded status of plans $ (95 ) $ (107 ) $ (8 ) $ (8 ) Classification of amounts recognized in the Consolidated Balance Sheets Accrued liabilities $ — $ — $ — $ — Pension and postretirement healthcare benefits (95 ) (107 ) $ (8 ) (8 ) Total liabilities (95 ) (107 ) (8 ) (8 ) Accumulated other comprehensive (income) loss 92 87 (2 ) (2 ) Total $ (3 ) $ (20 ) $ (10 ) $ (10 ) (1) We expect 2018 contributions to be $21 million for the qualified retirement plan.
Schedule of Funded Status	At December 31, 2017, our qualified retirement plan was in an underfunded status of $95 million. As a result, we have a projected minimum funding requirement of $11 million for 2017, which will be payable in 2018. US Qualified Plan Year Ended December 31, 2017 2016 Accumulated Benefit Obligation $ 377 $ 369 Projected Benefit Obligation (377 ) (369 ) Fair value of plan assets 282 262 Funded status-underfunded $ (95 ) $ (107 )
Summary of Expected Benefit Payments	Expected Benefit Payments 2018 2019 2020 2021 2022 2023-2027 Retirement Plans $ 28 $ 28 $ 27 $ 27 $ 27 $ 119 Postretirement Healthcare Plan $ — $ — $ — $ — $ — $ 2
Components of Net Periodic Cost Associated with the U.S. Defined Benefit Plans and The foreign Defined Plan	The table below presents the components of net periodic cost associated with the U.S. and foreign plans recognized in the Consolidated Statements of Operations for 2017, 2016, and 2015: Retirement Plans Postretirement Healthcare Plans Year Ended December 31, Year Ended December 31, 2017 2016 2015 2017 2016 2015 Net periodic cost: Service cost $ — $ — $ — $ — $ — $ — Interest cost 15 19 19 1 1 1 Expected return on plan assets (15 ) (19 ) (22 ) — — — Net amortization of actuarial loss 3 2 3 — — — Curtailment gains — (1 ) — — — — Settlement losses — 2 — — — — Total net periodic cost - continuing operations $ 3 $ 3 $ — $ 1 $ 1 $ 1
Weighted Average Assumptions Used to Determine Net Periodic Cost and Benefit Obligations	The following weighted average assumptions were used to determine net periodic cost: 2017 2016 2015 US Qualified Plan Netherlands Plan US Qualified Plan Netherlands Plan US Qualified Plan Netherlands Plan Discount rate 4.25 % — % 4.75 % 2.25 % 3.75 % 2.25 % Expected return on plan assets 5.64 % — % 5.64 % 4.25 % 5.95 % 4.75 % The following weighted average assumptions were used in estimating the actuarial present value of the plans’ benefit obligations: 2017 2016 2015 US Qualified Plan Netherlands Plan US Qualified Plan Netherlands Plan (1) US Qualified Plan Netherlands Plan Discount rate 3.71 % — % 4.25 % 1.50 % 4.75 % 2.25 % (1) This reflects the rate used to calculate the final Netherlands Plan benefit obligation immediately before the Settlement Date.
Asset Categories and Associated Asset Allocations for the Company's Funded Retirement Plans	Asset categories and associated asset allocations for our funded retirement plans at December 31, 2017 and 2016: December 31, 2017 2016 Actual Target Actual Target Qualified Plan: Equity securities 50 % 50 % 36 % 38 % Debt securities 48 48 61 62 Cash and cash equivalents 2 2 3 — Total 100 % 100 % 100 % 100 %
U.S. [Member] | Qualified Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Summary of Fair Values of Pension Investments	The fair values of pension investments as of December 31, 2017 are summarized below: U.S. Qualified Plan Fair Value Measurement at December 31, 2017, Using: Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Asset category: Commingled Equity Funds $ 94 (1 ) $ — $ — $ 94 Equity Securities 47 (2 ) — — 47 Debt securities: Corporate — 66 (3 ) — 66 Government 68 (4 ) — — 68 Cash & cash equivalents: Commingled cash equivalents fund 7 (5 ) — — 7 Total at fair value $ 216 $ 66 $ — $ 282 (1) For commingled equity funds owned by the funds, fair value is based on observable quoted prices on active exchanges, which are level 1 inputs. (2) For equity securities, fair value is based on observable quoted prices on active exchanges, which are level 1 inputs. (3) For corporate related debt securities, the fair value is based on observable inputs of comparable market transactions, which are level 2 inputs. (4) For government related debt securities, the fair value is based on observable quoted prices on active exchanges, which are level 1 inputs. (5) For commingled cash equivalents funds, fair value is based on observable quoted prices on active exchanges, which are level 1 inputs. The fair values of pension investments as of December 31, 2016 are summarized below: U.S. Qualified Plan Fair Value Measurement at December 31, 2016, Using: Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Asset category: Commingled Equity Funds $ 95 (1 ) $ — $ — $ 95 Debt securities: Corporate — 78 (2 ) — 78 Government 81 (3 ) — — 81 Cash & cash equivalents: Commingled cash equivalents fund 8 (4 ) — — 8 Total at fair value $ 184 $ 78 $ — $ 262 (1) For commingled equity funds owned by the funds, fair value is based on observable quoted prices on active exchanges, which are level 1 inputs. (2) For corporate related debt securities, the fair value is based on observable inputs of comparable market transactions, which are level 2 inputs. (3) For government related debt securities, the fair value is based on observable quoted prices on active exchanges, which are level 1 inputs. (4) For commingled cash equivalents funds, fair value is based on observable quoted prices on active exchanges, which are level 1 inputs.
South Africa [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Weighted Average Assumptions Used to Determine Net Periodic Cost and Benefit Obligations	The following weighted-average assumptions were used in determining the actuarial present value of the South African Plan: 2017 2016 2015 Discount rate 11.54 % 10.87 % 10.94 %

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2017
Segment Information [Abstract]
Net Sales and Income (Loss) from Operations	Net sales and income (loss) from operations were as follows: Year Ended December 31, 2017 2016 2015 Net sales (TiO 2 ) $ 1,698 $ 1,309 $ 1,510 TiO 2 $ 261 $ 6 $ (127 ) Corporate (123 ) (62 ) (74 ) Income (loss) from operations 138 (56 ) (201 ) Interest and debt expense, net (188 ) (185 ) (176 ) Gain (loss) on extinguishment of debt (28 ) 4 — Other income (expense), net (9 ) (27 ) 28 Income (loss) from continuing operations before income taxes $ (87 ) $ (264 ) $ (349 )
Net Sales to External Customers, by Geographic Region, Based on Country of Production	Net sales to external customers, by geographic region, based on country of production, were as follows: Year Ended December 31, 2017 2016 2015 U.S. operations $ 663 $ 570 $ 621 International operations: Australia 452 352 380 South Africa 350 200 313 The Netherlands 233 187 196 Total net sales $ 1,698 $ 1,309 $ 1,510
Net Sales from External Customers, by Product Segment, Based on Product of Production	Net sales from external customers for each similar product were as follows: Year Ended December 31, 2017 2016 2015 Pigment $ 1,211 $ 966 $ 976 Titanium feedstock and co-products 434 286 426 Electrolytic 53 57 108 Total net sales $ 1,698 $ 1,309 $ 1,510
Schedule of Depreciation, Amortization and Depletion by Segment	Depreciation, amortization and depletion were as follows: Year Ended December 31, 2017 2016 2015 TiO 2 $ 177 $ 171 $ 247 Corporate 5 6 6 Total depreciation, amortization and depletion $ 182 $ 177 $ 253
Schedule of Capital Expenditures by Segment	Capital expenditures were as follows: Year Ended December 31, 2017 2016 2015 TiO 2 $ 89 $ 84 $ 164 Corporate 2 2 1 Total capital expenditures $ 91 $ 86 $ 165
Schedule of Total Assets By Segment	Total assets of continuing operations were as follows: December 31, 2017 2016 TiO 2 $ 3,058 $ 2,991 Corporate 1,806 302 Total $ 4,864 $ 3,293
Schedule of Property, Plant and Equipment, Net and Mineral Leaseholds, Net, by Geographic Region	Property, plant and equipment, net and mineral leaseholds, net, by geographic region, were as follows: December 31, 2017 2016 U.S. operations $ 193 $ 194 International operations: South Africa 919 844 Australia 849 896 The Netherlands 39 35 Total $ 2,000 $ 1,969

Quarterly Results of Operatio54

Quarterly Results of Operations (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2017
Quarterly Results of Operations (Unaudited) [Abstract]
Summary of Quarterly Results of Operations	The following represents our unaudited quarterly results for the years ended December 31, 2017 and 2016. These quarterly results were prepared in conformity with generally accepted accounting principles and reflect all adjustments that are, in the opinion of management, necessary for a fair statement of the results, and were of a normal recurring nature. Unaudited quarterly results for 2017: 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Net sales $ 378 $ 421 $ 435 $ 464 Cost of goods sold 315 327 329 339 Gross profit 63 94 106 125 Net income (loss) from continuing operations (53 ) (17 ) (25 ) 2 Net income (loss) from discontinued operations, net of tax 15 22 (216 ) (1) — Net income (loss) (2) (38 ) 5 (241 ) 2 Net income (loss) attributable to noncontrolling interest 3 2 6 2 Net income (loss) attributable to Tronox Limited (2) $ (41 ) $ 3 $ (247 ) $ — Income (loss) from continuing operations per share, basic and diluted $ (0.48 ) $ (0.16 ) $ (0.26 ) $ — Income (loss) from discontinued operations per share, basic and diluted $ 0.13 $ 0.18 $ (1.81 ) $ — (1) Includes a loss of $233 million on the Alkali Sale. (2) During the fourth quarter of 2017, we recorded out-of-period adjustments that should have been recorded previously that decreased net income (loss) from continuing operations by $2 million and decreased income from continuing operations per share by $0.01. After evaluating the quantitative and qualitative aspects of the adjustments, we concluded the effect of these adjustments, individually and in the aggregate, was not material to our previously issued interim and annual consolidated financial statements and is not material to our 2017 consolidated financial statements. Unaudited quarterly results for 2016: 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Net sales $ 285 $ 333 $ 339 $ 352 Cost of goods sold 291 295 291 298 Gross profit (loss) (6 ) 38 48 54 Net income (loss) from continuing operations (114 ) (62 ) (62 ) 99 Net income (loss) from discontinued operations, net of tax 20 12 23 24 Net income (loss) (94 ) (50 ) (39 ) 123 Net income (loss) attributable to noncontrolling interest (1 ) 2 (2 ) 2 Net income (loss) attributable to Tronox Limited $ (93 ) $ (52 ) $ (37 ) $ 121 Income (loss) from continuing operations per share, basic $ (0.97 ) $ (0.55 ) $ (0.53 ) $ 0.84 Income (loss) from continuing operations per share, diluted $ (0.97 ) $ (0.55 ) $ (0.53 ) $ 0.81 Income (loss) from discontinued operations per share, basic $ 0.17 $ 0.11 $ 0.20 $ 0.21 Income (loss) from discontinued operations per share, diluted $ 0.17 $ 0.11 $ 0.20 $ 0.20

The Company (Details)

The Company (Details) $ / shares in Units, $ in Millions	Oct. 10, 2017shares	Sep. 01, 2017USD ($)	Feb. 21, 2017USD ($)$ / sharesshares	Dec. 31, 2017	Dec. 31, 2017USD ($)	Dec. 31, 2017shares	Dec. 31, 2017Facility	Dec. 31, 2017Operation	Dec. 31, 2017Jurisdiction	Dec. 31, 2017Segment	Dec. 31, 2016USD ($)Segment	Dec. 31, 2015USD ($)	Dec. 31, 2012
Schedule of Equity Method Investments [Line Items]
Number of reportable segments							1			1	2
Number of mining operations | Operation								3
Proceeds from the sale of business					$ 1,325						$ 0	$ 0
Common Class B [Member]
Schedule of Equity Method Investments [Line Items]
Number of ordinary shares to be issued for acquisition (in shares) | shares						22,425,000
Exxaro [Member]
Schedule of Equity Method Investments [Line Items]
Acquisition percentage													74.00%
Percentage of Tronox Limited's voting securities				24.00%	24.00%	24.00%	24.00%	24.00%	24.00%	24.00%	44.00%
Exxaro [Member] | Minimum [Member]
Schedule of Equity Method Investments [Line Items]
Ownership interest				50.00%	50.00%	50.00%	50.00%	50.00%	50.00%	50.00%
Exxaro [Member] | Common Class A [Member]
Schedule of Equity Method Investments [Line Items]
Number of ordinary shares to be issued for acquisition (in shares) | shares	22,425,000
Exxaro [Member] | Tronox KZN Sands (Pty) Ltd. [Member]
Schedule of Equity Method Investments [Line Items]
Ownership interest				26.00%	26.00%	26.00%	26.00%	26.00%	26.00%	26.00%
Exxaro [Member] | Tronox KZN Sands (Pty) Ltd. [Member] | Common Class B [Member]
Schedule of Equity Method Investments [Line Items]
Ownership interest				3.20%	3.20%	3.20%	3.20%	3.20%	3.20%	3.20%
Exxaro [Member] | Tronox Mineral Sands (Pty) Ltd. [Member]
Schedule of Equity Method Investments [Line Items]
Ownership interest				26.00%	26.00%	26.00%	26.00%	26.00%	26.00%	26.00%
Exxaro [Member] | Other Non-Operating Subsidiaries [Member]
Schedule of Equity Method Investments [Line Items]
Ownership interest				26.00%	26.00%	26.00%	26.00%	26.00%	26.00%	26.00%
TiO2 Segment [Member] | Pigment [Member]
Schedule of Equity Method Investments [Line Items]
Number of production facilities | Facility							3
Cristal's Titanium Dioxide Business [Member]
Schedule of Equity Method Investments [Line Items]
Cash consideration for acquisition			$ 1,673
Acquisition percentage			24.00%
Term of automatic extension				3 months
Contract termination fee required to pay if regulatory approval is not obtained					$ 60
Contract termination fee					100
Number of regulatory jurisdictions from which Company received approval for transaction | Jurisdiction									7
Total number of regulatory jurisdictions | Jurisdiction									9
Cristal's Titanium Dioxide Business [Member] | Common Class A [Member]
Schedule of Equity Method Investments [Line Items]
Number of ordinary shares to be issued for acquisition (in shares) | shares			37,580,000
Ordinary shares, par value (in dollars per share) | $ / shares			$ 0.01
Alkali Chemicals Group [Member]
Schedule of Equity Method Investments [Line Items]
Proceeds from the sale of business		$ 1,325
Pre-tax loss on disposal of discontinued operation					(233)
Transaction fees related to sale of disposal group					$ 21

The Company, Revision of Previo

The Company, Revision of Previously Issued Consolidated Financial Statements (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Quantifying Misstatement in Current Year Financial Statements [Line Items]
Increase (decrease) in cost of goods sold	$ 339	$ 329	$ 327	$ 315	$ 298	$ 291	$ 295	$ 291	$ 1,310	$ 1,175	$ 1,491
Non-timely Filing [Member]
Quantifying Misstatement in Current Year Financial Statements [Line Items]
Aggregate misstatement which impacts prior year financial statements				11
Overstated Depreciation Expense [Member] | Out of Period Correction in 2014 One [Member]
Quantifying Misstatement in Current Year Financial Statements [Line Items]
Increase (decrease) in cost of goods sold				(6)
Overstated Depreciation Expense [Member] | Out of Period Correction in 2014 Two [Member]
Quantifying Misstatement in Current Year Financial Statements [Line Items]
Increase (decrease) in cost of goods sold				(5)
Royalty Tax [Member] | Out of Period Correction in 2014 One [Member]
Quantifying Misstatement in Current Year Financial Statements [Line Items]
Increase (decrease) in cost of goods sold				$ 7

The Company, Impact of Misstate

The Company, Impact of Misstatements on Financial Statements (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions		3 Months Ended												12 Months Ended
		Dec. 31, 2017		Sep. 30, 2017		Jun. 30, 2017		Mar. 31, 2017		Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017		Dec. 31, 2016		Dec. 31, 2015		Dec. 31, 2014
Consolidated Statement of Operations [Abstract]
Net sales		$ 464		$ 435		$ 421		$ 378		$ 352	$ 339	$ 333	$ 285	$ 1,698		$ 1,309		$ 1,510
Cost of goods sold		339		329		327		315		298	291	295	291	1,310		1,175		1,491
Gross profit		125		106		94		63		54	48	38	(6)	388		134		19
Selling, general and administrative expenses														(251)		(189)		(199)
Income (loss) from operations														138		(56)		(201)
Other income (expense), net														(9)		(27)		28
Income (loss) from continuing operations before income taxes														(87)		(264)		(349)
Net income (loss) from continuing operations		2		(25)		(17)		(53)		99	(62)	(62)	(114)	(93)		(139)		(372)
Income (loss) from discontinued operations, net of tax		0		(216)	[1]	22		15		24	23	12	20	(179)		79		55
Net loss attributable to Tronox Limited		$ 0	[2]	$ (247)	[2]	$ 3	[2]	$ (41)	[2]	121	(37)	(52)	(93)	$ (285)		$ (61)		$ (329)
Net income (loss) per share from continuing operations, basic and diluted (in dollars per share)		$ 0		$ (0.26)		$ (0.16)		$ (0.48)						$ (0.89)	[3]	$ (1.20)	[3]	$ (3.31)	[3]
Net income (loss) per share from discontinued operations, basic and diluted (in dollars per share)		$ 0		$ (1.81)		$ 0.18		$ 0.13						$ (1.50)	[3]	$ 0.68	[3]	$ 0.47	[3]
Weighted average shares outstanding, basic and diluted (in shares)														119,502		116,161		115,566
Consolidated Statements of Comprehensive Income (Loss) [Abstract]
Net loss		$ 2	[2]	$ (241)	[2]	$ 5	[2]	$ (38)	[2]	123	$ (39)	$ (50)	$ (94)	$ (272)		$ (60)		$ (317)
Total comprehensive income ( loss)														(149)		72		(594)
Comprehensive income (loss) attributable to Tronox Limited														(191)		40		(529)
Consolidated Balance Sheet [Abstract]
Total assets of discontinued operations		0								1,671				0		1,671
Total current assets		2,639								2,738				2,639		2,738
Total assets		4,864								4,964				4,864		4,964
Accrued liabilities		163								150				163		150
Total liabilities of discontinued operations		0								111				0		111
Total current liabilities		348								564				348		564
Total liabilities		3,849								3,811				3,849		3,811
Accumulated deficit		(327)								(19)				(327)		(19)
Accumulated other comprehensive loss		(403)								(497)				(403)		(497)
Total Tronox Limited shareholders' equity		829								1,009				829		1,009
Total equity		1,015								1,153				1,015		1,153		1,104		$ 1,792
Total liabilities and equity		$ 4,864								4,964				$ 4,864		4,964
As Reported [Member]
Consolidated Statement of Operations [Abstract]
Net sales	[4]															1,309		1,510
Cost of goods sold	[4]															1,175		1,487
Gross profit	[4]															134		23
Selling, general and administrative expenses	[4]															(185)		(192)
Income (loss) from operations	[4]															(52)		(190)
Other income (expense), net	[4]															(27)		28
Income (loss) from continuing operations before income taxes	[4]															(260)		(338)
Net income (loss) from continuing operations	[4]															(135)		(362)
Income (loss) from discontinued operations, net of tax	[4]															77		55
Net loss attributable to Tronox Limited	[4]															$ (59)		$ (318)
Net income (loss) per share from continuing operations, basic and diluted (in dollars per share)	[4]															$ (1.17)		$ (3.22)
Net income (loss) per share from discontinued operations, basic and diluted (in dollars per share)	[4]															$ 0.67		$ 0.47
Weighted average shares outstanding, basic and diluted (in shares)	[4]															116,161		115,566
Consolidated Statements of Comprehensive Income (Loss) [Abstract]
Net loss																$ (58)		$ (307)
Total comprehensive income ( loss)																74		(584)
Comprehensive income (loss) attributable to Tronox Limited																42		(518)
Consolidated Balance Sheet [Abstract]
Current assets of continuing operations	[4]									1,067						1,067
Total assets of discontinued operations	[4]									1,668						1,668
Total current assets	[4]									2,735						2,735
Total assets	[4]									4,961						4,961
Accrued liabilities	[4]									138						138
Current liabilities of continuing operations	[4]									443						443
Total liabilities of discontinued operations	[4]									110						110
Total current liabilities	[4]									553						553
Total liabilities	[4]									3,800						3,800
Accumulated deficit	[4]									(13)						(13)
Accumulated other comprehensive loss	[4]									(495)						(495)
Total Tronox Limited shareholders' equity	[4]									1,017						1,017
Total equity	[4]									1,161						1,161
Total liabilities and equity	[4]									4,961						4,961
Adjustment [Member]
Consolidated Statement of Operations [Abstract]
Net sales																0		0
Cost of goods sold																0		4
Gross profit																0		(4)
Selling, general and administrative expenses																(4)		(7)
Income (loss) from operations																(4)		(11)
Other income (expense), net																0		0
Income (loss) from continuing operations before income taxes																(4)		(11)
Net income (loss) from continuing operations																(4)		(10)
Income (loss) from discontinued operations, net of tax																2		0
Net loss attributable to Tronox Limited																$ (2)		$ (11)
Net income (loss) per share from continuing operations, basic and diluted (in dollars per share)																$ (0.03)		$ (0.09)
Net income (loss) per share from discontinued operations, basic and diluted (in dollars per share)																$ 0.01		$ 0
Weighted average shares outstanding, basic and diluted (in shares)																116,161		115,566
Consolidated Statements of Comprehensive Income (Loss) [Abstract]
Net loss																$ (2)		$ (10)
Total comprehensive income ( loss)																(2)		(10)
Comprehensive income (loss) attributable to Tronox Limited																(2)		(11)
Consolidated Balance Sheet [Abstract]
Current assets of continuing operations										0						0
Total assets of discontinued operations										3						3
Total current assets										3						3
Total assets										3						3
Accrued liabilities										11						11
Current liabilities of continuing operations										10						10
Total liabilities of discontinued operations										1						1
Total current liabilities										11						11
Total liabilities										11						11
Accumulated deficit										(6)						(6)
Accumulated other comprehensive loss										(2)						(2)
Total Tronox Limited shareholders' equity										(8)						(8)
Total equity										(8)						(8)
Total liabilities and equity										3						3
Revised [Member]
Consolidated Statement of Operations [Abstract]
Net sales																1,309		1,510
Cost of goods sold																1,175		1,491
Gross profit																134		19
Selling, general and administrative expenses																(189)		(199)
Income (loss) from operations																(56)		(201)
Other income (expense), net																(27)		28
Income (loss) from continuing operations before income taxes																(264)		(349)
Net income (loss) from continuing operations																(139)		(372)
Income (loss) from discontinued operations, net of tax																79		55
Net loss attributable to Tronox Limited																$ (61)		$ (329)
Net income (loss) per share from continuing operations, basic and diluted (in dollars per share)																$ (1.20)		$ (3.31)
Net income (loss) per share from discontinued operations, basic and diluted (in dollars per share)																$ 0.68		$ 0.47
Weighted average shares outstanding, basic and diluted (in shares)																116,161		115,566
Consolidated Statements of Comprehensive Income (Loss) [Abstract]
Net loss																$ (60)		$ (317)
Total comprehensive income ( loss)																72		(594)
Comprehensive income (loss) attributable to Tronox Limited																40		$ (529)
Consolidated Balance Sheet [Abstract]
Current assets of continuing operations										1,067						1,067
Total assets of discontinued operations										1,671						1,671
Total current assets										2,738						2,738
Total assets										4,964						4,964
Accrued liabilities										149						149
Current liabilities of continuing operations										453						453
Total liabilities of discontinued operations										111						111
Total current liabilities										564						564
Total liabilities										3,811						3,811
Accumulated deficit										(19)						(19)
Accumulated other comprehensive loss										(497)						(497)
Total Tronox Limited shareholders' equity										1,009						1,009
Total equity										1,153						1,153
Total liabilities and equity										$ 4,964						$ 4,964
[1]	Includes a loss of $233 million on the Alkali Sale.
[2]	During the fourth quarter of 2017, we recorded out-of-period adjustments that should have been recorded previously that decreased net income (loss) from continuing operations by $2 million and decreased income from continuing operations per share by $0.01. After evaluating the quantitative and qualitative aspects of the adjustments, we concluded the effect of these adjustments, individually and in the aggregate, was not material to our previously issued interim and annual consolidated financial statements and is not material to our 2017 consolidated financial statements.
[3]	Net loss per ordinary share amounts were calculated from exact, not rounded net loss and share information.
[4]	Amounts reflect the results of Alkali as discontinued operations.

Significant Accounting Polici58

Significant Accounting Policies (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Significant Accounting Policies [Abstract]
Research and development expenses	$ 8	$ 9	$ 11
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Useful life of intangible assets	3 years
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Useful life of intangible assets	20 years
Land Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	10 years
Land Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	20 years
Buildings [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	10 years
Buildings [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	40 years
Machinery and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	3 years
Machinery and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	25 years
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	10 years
Australia [Member]
Cash and Cash Equivalents [Abstract]
Restricted cash and cash equivalents	$ 2	3	5
Australia [Member] | Blocked Term Loan [Member]
Cash and Cash Equivalents [Abstract]
Restricted cash and cash equivalents		651
ASU 2017-07 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of pension costs	$ 4	$ 3	$ 1

Discontinued Operations (Detail

Discontinued Operations (Details) $ in Millions	3 Months Ended									12 Months Ended
	Dec. 31, 2017USD ($)	Sep. 30, 2017USD ($)	[1]	Jun. 30, 2017USD ($)	Mar. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Sep. 30, 2016USD ($)	Jun. 30, 2016USD ($)	Mar. 31, 2016USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2017USD ($)Facility	Dec. 31, 2017USD ($)Segment	Dec. 31, 2016USD ($)Segment	Dec. 31, 2015USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of operating segments | Segment												1	2
Number of reportable segments											1	1	2
Consolidated Statements of Operations [Abstract]
Net income (loss) from discontinued operations, net of tax	$ 0	$ (216)		$ 22	$ 15	$ 24	$ 23	$ 12	$ 20	$ (179)			$ 79	$ 55
Current Assets [Abstract]
Total current assets of discontinued operations	0					1,671				0	$ 0	$ 0	1,671
Current Liabilities [Abstract]
Total current liabilities of discontinued operations	$ 0					111				0	$ 0	$ 0	111
Alkali Chemicals Group [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Allocated corporate costs										3			4	3
Consolidated Statements of Operations [Abstract]
Net sales										521			786	602
Cost of goods sold										448			671	505
Selling, general and administrative expenses										(18)			(25)	(25)
Income before income taxes										55			89	72
Income tax provision										(1)			(10)	(17)
Loss on sale of discontinued operations, no tax impact										(233)			0	0
Net income (loss) from discontinued operations, net of tax										$ (179)			79	$ 55
Current Assets [Abstract]
Accounts receivable, net of allowance for doubtful accounts						146							146
Inventories, net						33							33
All other current assets						21							21
Total current assets of discontinued operations						200							200
Noncurrent Assets [Abstract]
Property, plant and equipment						739							739
Mineral leaseholds, net						730							730
Other long-term assets						2							2
Total assets of discontinued operations						1,671							1,671
Current Liabilities [Abstract]
Accounts payable						44							44
Accrued liabilities						36							36
All other current liabilities						11							11
Total current liabilities of discontinued operations						91							91
All other long-term liabilities						20							20
Total liabilities of discontinued operations						$ 111							$ 111
[1]	Includes a loss of $233 million on the Alkali Sale.

Restructuring Expense (Details)

Restructuring Expense (Details) $ in Millions	12 Months Ended
	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)Employee	Dec. 31, 2015USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring income (expense)	$ 1	$ (1)	$ (21)
TiO2 Restructuring Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring income (expense)	0	(1)	(21)
Restructuring Settlement [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring income (expense)	1	0	0
TiO2 Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring income (expense)	0	$ (1)	(20)
TiO2 Segment [Member] | Reduction in Employees and Outside Contractor [Member]
Restructuring Cost and Reserve [Line Items]
Reduction of positions | Employee		580
Corporate [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring income (expense)	$ 1	$ 0	$ (1)

Restructuring Expense, Summary

Restructuring Expense, Summary of Changes in Restructuring liability (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Summary in changes in liability established for restructuring [Roll Forward]
Beginning balance	$ 0	$ 15
Additional provision, net	0	1
Cash payments	0	(16)
Ending balance	$ 0	$ 0

Other Income (Expense), Net (De

Other Income (Expense), Net (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Other Income (Expense), Net [Abstract]
Net realized and unrealized foreign currency gains (losses)		$ (20)	$ (31)	$ 21
Interest income		10	3	7
Pension and postretirement benefit curtailment gains/(settlement losses)	[1]	0	(1)	0
Other, net		1	2	0
Total		$ (9)	$ (27)	$ 28
[1]	Losses related to our Netherlands pension plan. See Note 20.

Income Taxes - Income (Loss) be

Income Taxes - Income (Loss) before Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Components of income (loss) from continuing operations before income taxes [Abstract]
International	$ 130	$ (481)	$ (320)
Income (loss) from continuing operations before income taxes	(87)	(264)	(349)
United Kingdom [Member]
Components of income (loss) from continuing operations before income taxes [Abstract]
Domestic	(74)	362	330
Australia [Member]
Components of income (loss) from continuing operations before income taxes [Abstract]
Domestic	$ (143)	$ (145)	$ (359)

Income Taxes - Summary of Incom

Income Taxes - Summary of Income Tax (Provision) Benefit (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
International [Abstract]
Current	$ (2)	$ 52	$ (6)
Deferred	(3)	9	1
Income tax (provision) benefit	(6)	125	(23)
United Kingdom [Member]
Domestic [Abstract]
Current	(2)	(1)	(1)
Deferred	1	0	0
Australian [Member]
Domestic [Abstract]
Current	$ 0	$ 65	$ (17)

Income Taxes - Effective Income

Income Taxes - Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Statutory tax rate			19.00%	30.00%	30.00%
Increases (decreases) resulting from [Abstract]
Tax rate differences			53.00%	44.00%	30.00%
U.S. federal tax reform (including rate change)			(1166.00%)	0.00%	0.00%
Disallowable expenditures			33.00%	(17.00%)	(4.00%)
Valuation allowances			675.00%	80.00%	(68.00%)
Corporate Reorganization			375.00%	(123.00%)	0.00%
State rate changes			3.00%	(4.00%)	13.00%
Withholding taxes			0.00%	42.00%	(11.00%)
Prior year accruals			(1.00%)	(3.00%)	0.00%
Branch taxation			0.00%	(3.00%)	1.00%
Other, net			2.00%	1.00%	2.00%
Effective tax rate			(7.00%)	47.00%	(7.00%)
Net income impact of Corporate Reorganization	$ 137			$ 107
Reversal of withholding tax accruals	139			110
Foreign currency loss from Corporate Reorganization	$ (2)			$ (3)
Domestic Tax Authority [Member] | Australia [Member]
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Statutory tax rate			30.00%	30.00%	30.00%
Domestic Tax Authority [Member] | United Kingdom [Member]
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Statutory tax rate			19.00%
Foreign Tax Authority [Member] | The Netherlands [Member]
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Statutory tax rate			25.00%
Foreign Tax Authority [Member] | South Africa [Member]
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Statutory tax rate			28.00%
Foreign Tax Authority [Member] | U.S. Federal [Member]
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Statutory tax rate			35.00%
Foreign Tax Authority [Member] | U.S. Federal [Member] | Plan [Member]
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Statutory tax rate		21.00%
Foreign Tax Authority [Member] | Switzerland [Member]
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Statutory tax rate			8.00%
Foreign Tax Authority [Member] | Jersey [Member]
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Statutory tax rate			0.00%

Income Taxes - Components of Ne

Income Taxes - Components of Net Deferred Tax Assets (Liabilities) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2017	Dec. 31, 2016
Deferred tax assets [Abstract]
Net operating loss and other carryforwards		$ 1,834	$ 1,899
Property, plant and equipment, net		81	106
Reserves for environmental remediation and restoration		28	25
Obligations for pension and other employee benefits		49	69
Investments		29	25
Grantor trusts		669	1,055
Inventories, net		7	11
Interest		245	326
Other accrued liabilities		2	6
Other		14	14
Total deferred tax assets		2,958	3,536
Valuation allowance associated with deferred tax assets		(2,825)	(3,357)
Net deferred tax assets		133	179
Deferred tax liabilities [Abstract]
Property, plant and equipment, net		(244)	(237)
Intangible assets, net		(52)	(86)
Other		(7)	(7)
Total deferred tax liabilities		(303)	(330)
Net deferred tax liability		(170)	(151)
Balance sheet classifications [Abstract]
Deferred tax assets - long-term		1	0
Deferred tax liabilities - long-term		(171)	(151)
Net deferred tax liability		$ (170)	$ (151)
Positive Outcome of Litigation [Member] | Settled Litigation [Member] | Anadarko Litigation [Member]
Income Tax Disclosure [Line Items]
Settlement amount paid	$ 5,200
Additional deferred tax assets	$ 2,000

Income Taxes - Changes in Valua

Income Taxes - Changes in Valuation Allowance by Jurisdiction (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Summary of changes to valuation allowance by jurisdiction [Abstract]
Changes in valuation allowances	$ (532)	$ (218)	$ 229
Domestic Tax Authority [Member] | Australia [Member]
Summary of changes to valuation allowance by jurisdiction [Abstract]
Changes in valuation allowances	359	(258)	111
Domestic Tax Authority [Member] | United Kingdom [Member]
Summary of changes to valuation allowance by jurisdiction [Abstract]
Changes in valuation allowances	10	0	0
Foreign Tax Authority [Member] | United States [Member]
Summary of changes to valuation allowance by jurisdiction [Abstract]
Changes in valuation allowances	(899)	40	113
Foreign Tax Authority [Member] | The Netherlands [Member]
Summary of changes to valuation allowance by jurisdiction [Abstract]
Changes in valuation allowances	(1)	0	6
Foreign Tax Authority [Member] | South Africa [Member]
Summary of changes to valuation allowance by jurisdiction [Abstract]
Changes in valuation allowances	(1)	$ 0	$ (1)
Net Operating Loss Utilization [Member] | The Netherlands [Member]
Summary of changes to valuation allowance by jurisdiction [Abstract]
Changes in valuation allowances	(12)
Foreign Currency Exchange Rates Changes [Member] | The Netherlands [Member]
Summary of changes to valuation allowance by jurisdiction [Abstract]
Changes in valuation allowances	$ 11

Income Taxes - Expiration of Ta

Income Taxes - Expiration of Tax Loss Carryforwards (Details) $ in Millions	Dec. 31, 2017USD ($)
Operating Loss Carryforwards [Line Items]
Future Grantor Trust deductions	$ 2,500
Summary of expiration of tax loss carryforwards [Abstract]
2,018	21
2,019	1
2,020	16
2,021	19
2,022	94
Thereafter	8,272
No Expiration	691
Total tax loss carryforwards	9,114
Maximum [Member]
Operating Loss Carryforwards [Line Items]
Net operating losses and interest limitation carryforwards subject to limitation upon ownership change	5,200
Domestic Tax Authority [Member] | United Kingdom [Member]
Summary of expiration of tax loss carryforwards [Abstract]
2,018	0
2,019	0
2,020	0
2,021	0
2,022	0
Thereafter	0
No Expiration	55
Total tax loss carryforwards	55
Domestic Tax Authority [Member] | Australia [Member]
Summary of expiration of tax loss carryforwards [Abstract]
2,018	0
2,019	0
2,020	0
2,021	0
2,022	0
Thereafter	0
No Expiration	636
Total tax loss carryforwards	636
Foreign Tax Authority [Member] | The Netherlands [Member]
Summary of expiration of tax loss carryforwards [Abstract]
2,018	0
2,019	0
2,020	0
2,021	17
2,022	34
Thereafter	143
No Expiration	0
Total tax loss carryforwards	194
Foreign Tax Authority [Member] | U.S. Federal [Member]
Summary of expiration of tax loss carryforwards [Abstract]
2,018	0
2,019	0
2,020	0
2,021	0
2,022	0
Thereafter	4,114
No Expiration	0
Total tax loss carryforwards	4,114
U.S. State [Member]
Summary of expiration of tax loss carryforwards [Abstract]
2,018	21
2,019	1
2,020	16
2,021	2
2,022	60
Thereafter	4,015
No Expiration	0
Total tax loss carryforwards	$ 4,115

Income Taxes - Undistributed Ea

Income Taxes - Undistributed Earnings of Foreign Subsidiaries (Details) $ in Millions	Dec. 31, 2017USD ($)
Income Taxes [Abstract]
Undistributed earnings from foreign subsidiaries subject to withholding tax if distributed	$ 150

Income Taxes - Unrecognized Tax

Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Income Taxes [Abstract]
Reserve for uncertain income tax positions	$ 0	$ 0

Loss Per Share, Computation of

Loss Per Share, Computation of Basic and Diluted Loss Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions		3 Months Ended								12 Months Ended
		Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017		Dec. 31, 2016		Dec. 31, 2015
Numerator - Basic and Diluted [Abstract]
Net income (loss) from continuing operations		$ 2	$ (25)	$ (17)	$ (53)	$ 99	$ (62)	$ (62)	$ (114)	$ (93)		$ (139)		$ (372)
Less: Net income (loss) from continuing operations attributable to noncontrolling interest										13		1		12
Undistributed net income (loss) from continuing operations attributable to Tronox Limited										$ (106)		$ (140)		$ (384)
Percentage allocated to ordinary shares	[1]									100.00%		100.00%		100.00%
Net income (loss) from continuing operations available to ordinary shares										$ (106)		$ (140)		$ (384)
Net income (loss) from discontinued operations available to ordinary shares										(179)		79		55
Net income (loss) available to ordinary shares										$ (285)		$ (61)		$ (329)
Denominator - Basic and Diluted [Abstract]
Weighted-average ordinary shares (in shares)										119,502		116,161		115,566
Net income (loss) per Ordinary Share [Abstract]
Basic and diluted net income (loss) from continuing operations per ordinary share (in dollars per share)		$ 0	$ (0.26)	$ (0.16)	$ (0.48)					$ (0.89)	[2]	$ (1.20)	[2]	$ (3.31)	[2]
Basic and diluted net income (loss) from discontinued operations per ordinary share (in dollars per share)		$ 0	$ (1.81)	$ 0.18	$ 0.13					(1.50)	[2]	0.68	[2]	0.47	[2]
Net income (loss) per share, basic and diluted	[2]									$ (2.39)		$ (0.52)		$ (2.84)
[1]	Our participating securities do not have a contractual obligation to share in losses; therefore, when we have a net loss, none of the loss is allocated to participating securities. Consequently, for 2017, 2016, and 2015, the two-class method did not have an effect on our net loss per ordinary share calculation, and as such, dividends paid during the year did not impact this calculation.
[2]	Net loss per ordinary share amounts were calculated from exact, not rounded net loss and share information.

Loss Per Share, Computation o72

Loss Per Share, Computation of Anti-Dilutive Shares (Details) - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares (in shares)	1,707,133	1,970,481	2,189,967
Average exercise price (in dollars per share)	$ 21.27	$ 21.19	$ 21.15
Series A Warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares (in shares)	222,939	1,440,662	1,354,529
Average exercise price (in dollars per share)	$ 8.51	$ 8.51	$ 9.63
Series B Warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares (in shares)	328,563	1,953,207	1,833,834
Average exercise price (in dollars per share)	$ 9.37	$ 9.37	$ 10.63
Restricted Stock Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares (in shares)	5,478,269	5,587,331	1,494,027
Average exercise price (in dollars per share)	$ 11.33	$ 7.19	$ 23.04

Fair Value Measurement (Details

Fair Value Measurement (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Inputs, Level 1 [Member] | Term Loan [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of debt	$ 2,170	$ 1,500
Fair Value, Inputs, Level 1 [Member] | Senior Notes due 2020 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of debt		841
Fair Value, Inputs, Level 1 [Member] | Senior Notes due 2022 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of debt	609	544
Fair Value, Inputs, Level 1 [Member] | Senior Notes Due 2025 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of debt	463
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Environmental rehabilitation trust	$ 13	$ 13

Accounts Receivable, Net of A74

Accounts Receivable, Net of Allowance for Doubtful Accounts (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal	$ 337	$ 279
Allowance for doubtful accounts	(1)	(1)
Accounts receivable, net of allowance for doubtful accounts	336	278
Maximum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Bad debt expense	1	1	$ 1
Trade Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal	324	271
Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal	$ 13	$ 8

Inventories, net (Details)

Inventories, net (Details) - USD ($) $ in Millions		Dec. 31, 2017	Dec. 31, 2016
Components of Inventories [Abstract]
Raw materials		$ 137	$ 191
Work-in-process		35	35
Finished goods, net		194	190
Materials and supplies, net	[1]	110	97
Total		476	513
Less: Inventories, net - non-current		(3)	(14)
Inventories, net - current		473	499
Inventory on consignment		28	24
Inventory obsolescence reserves		14	17
Reserves for lower of cost and net realizable value		$ 27	$ 26
[1]	Consists of processing chemicals, maintenance supplies, and spare parts, which will be consumed directly and indirectly in the production of our products.

Property, Plant and Equipment76

Property, Plant and Equipment (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		$ 1,893	$ 1,726
Less: accumulated depreciation		(778)	(634)
Property, plant and equipment, net	[1]	1,115	1,092
Depreciation expense related to property, plant and equipment		125	117	$ 150
Cost of Goods Sold [Member]
Property, Plant and Equipment [Line Items]
Depreciation expense related to property, plant and equipment		122	114	146
Selling, General and Administrative Expenses [Member]
Property, Plant and Equipment [Line Items]
Depreciation expense related to property, plant and equipment		3	3	$ 4
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		95	94
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		267	237
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		1,387	1,275
Construction-in-Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		103	82
Other [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		$ 41	$ 38
[1]	Substantially, all of these assets are pledged as collateral for our debt. See Note 15.

Mineral Leaseholds, net (Detail

Mineral Leaseholds, net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Minerals leaseholds, net of accumulated depletion [Abstract]
Mineral leaseholds	$ 1,303	$ 1,257
Less accumulated depletion	(418)	(380)
Mineral leaseholds, net	885	877
Depletion expense related to mineral leaseholds	$ 32	$ 35	$ 77

Intangible Assets, net (Details

Intangible Assets, net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Gross cost	$ 368	$ 368
Accumulated amortization	(170)	(145)
Net carrying amount	198	223
Amortization expense related to intangible assets	25	25	$ 26
Estimated Future Amortization Expense Related to Intangible Assets [Abstract]
2,018	25
2,019	25
2,020	25
2,021	25
2,022	23
Thereafter	75
Selling, General and Administrative Expenses [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense related to intangible assets	24	24	25
Cost of Goods Sold [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense related to intangible assets	1	1	$ 1
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross cost	291	291
Accumulated amortization	(134)	(115)
Net carrying amount	157	176
TiO2 Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross cost	32	32
Accumulated amortization	(11)	(9)
Net carrying amount	21	23
Internal-Use Software [Member]
Finite-Lived Intangible Assets [Line Items]
Gross cost	45	45
Accumulated amortization	(25)	(21)
Net carrying amount	$ 20	$ 24

Accrued Liabilities (Details)

Accrued Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Summary of Accrued Liabilities [Abstract]
Employee-related costs and benefits	$ 72	$ 61
Interest	21	35
Sales rebates	19	20
Taxes other than income taxes	7	9
Other	44	25
Accrued liabilities	$ 163	$ 150

Debt, Revolving Credit Faciliti

Debt, Revolving Credit Facilities (Details) ZAR in Millions, $ in Millions		Sep. 22, 2017USD ($)	Sep. 30, 2017USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2017ZAR
Prior Term Loan [Member]
Line of Credit Facility [Line Items]
Original principal	[1]			$ 1,500
Repayment of outstanding balance		$ 1,500
New Term Loan Facility [Member]
Line of Credit Facility [Line Items]
Original principal	[2]			2,150
Maximum borrowing capacity		2,150
Senior Notes due 2025 [Member]
Line of Credit Facility [Line Items]
Original principal		450		450
Wells Fargo Revolver [Member]
Line of Credit Facility [Line Items]
Debt issuance costs				$ 7
Wells Fargo Revolver [Member] | Federal Funds Effective Rate [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate				0.50%
Wells Fargo Revolver [Member] | Adjusted LIBOR [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate				1.00%
Debt instrument, term of variable rate				1 month
Wells Fargo Revolver [Member] | Adjusted LIBOR [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Applicable margin added to variable interest rate				1.25%
Wells Fargo Revolver [Member] | Adjusted LIBOR [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Applicable margin added to variable interest rate				1.75%
Wells Fargo Revolver [Member] | Base Rate [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Applicable margin added to variable interest rate				0.25%
Wells Fargo Revolver [Member] | Base Rate [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Applicable margin added to variable interest rate				0.75%
Wells Fargo Revolver [Member] | Letter of Credit [Member]
Line of Credit Facility [Line Items]
Maturity date of revolving credit facility				Sep. 22, 2022
Maximum borrowing capacity		85
Outstanding borrowings on revolvers				$ 19
Wells Fargo Revolver [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity		$ 550
Outstanding borrowings on revolvers				0
Debt issuance costs				5
UBS Revolver [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Repayment of outstanding balance			$ 150
Unamortized debt issuance costs included in "Gain (loss) on extinguishment of debt"				1
Remaining unamortized original debt issuance costs amortized over life of Well Fargo Revolver				2
Debt issuance costs				$ 2
ABSA Revolver [Member]
Line of Credit Facility [Line Items]
Maturity date of revolving credit facility				Jun. 14, 2017
Maximum borrowing capacity				$ 1.3			ZAR 105
Outstanding borrowings on revolvers					$ 0
Drawdowns on revolvers				0	0	$ 0
Repayments on revolvers				$ 0	$ 0	$ 0
New ABSA Revolver [Member]
Line of Credit Facility [Line Items]
Maturity date of revolving credit facility				Dec. 13, 2020
Maximum borrowing capacity				$ 750			ZAR 61,000
Drawdowns on revolvers				0
Repayments on revolvers				$ 0
New ABSA Revolver [Member] | One Month Johannesburg Interbank Agreed Rate [Member]
Line of Credit Facility [Line Items]
Debt instrument, term of variable rate				1 month
New ABSA Revolver [Member] | One Month Johannesburg Interbank Agreed Rate [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Applicable margin added to variable interest rate				3.45%
New ABSA Revolver [Member] | One Month Johannesburg Interbank Agreed Rate [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Applicable margin added to variable interest rate				3.85%
[1]	Average effective interest rate of 5.1% and 4.9% during 2017 and 2016, respectively.
[2]	Average effective interest rate of 4.9% during 2017.

Debt, Components of Long-Term D

Debt, Components of Long-Term Debt, Net of Unamortized Discount and Debt Issuance Costs (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Sep. 22, 2017
Debt Instrument [Line Items]
Long-term debt		$ 3,191	$ 2,940
Less: Long-term debt due within one year		(17)	(16)
Debt issuance costs		(44)	(36)
Long-term debt, net		3,130	2,888
Prior Term Loan [Member]
Debt Instrument [Line Items]
Original principal	[1]	$ 1,500
Annual interest rate	[1]	Variable
Long-term debt	[1]	$ 0	$ 1,441
Average effective interest rate		5.10%	4.90%
New Term Loan Facility [Member]
Debt Instrument [Line Items]
Original principal	[2]	$ 2,150
Annual interest rate	[2]	Variable
Maturity date	[2]	Sep. 22, 2024
Long-term debt	[2]	$ 2,138	$ 0
Debt issuance costs		$ (27)
Average effective interest rate		4.90%
Senior Notes due 2020 [Member]
Debt Instrument [Line Items]
Original principal		$ 900
Annual interest rate		6.375%
Long-term debt		$ 0	896
Senior Notes due 2022 [Member]
Debt Instrument [Line Items]
Original principal		$ 600
Annual interest rate		7.50%
Maturity date		Mar. 15, 2022
Long-term debt		$ 584	584
Debt issuance costs		(8)	(10)
Senior Notes due 2025 [Member]
Debt Instrument [Line Items]
Original principal		$ 450		$ 450
Annual interest rate		5.75%
Maturity date		Sep. 22, 2025
Long-term debt		$ 450	0
Debt issuance costs		(9)
Lease Financing [Member]
Debt Instrument [Line Items]
Long-term debt		$ 19	$ 19
[1]	Average effective interest rate of 5.1% and 4.9% during 2017 and 2016, respectively.
[2]	Average effective interest rate of 4.9% during 2017.

Debt, Scheduled Maturities of L

Debt, Scheduled Maturities of Long-term Debt (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Scheduled maturities of long-term debt [Abstract]
2,018	$ 17
2,019	22
2,020	22
2,021	23
2,022	607
Thereafter	2,512
Total	3,203
Remaining accretion associated with the New Term Loan Facility	(12)
Total borrowings	$ 3,191	$ 2,940

Debt, Term Loan and Senior Note

Debt, Term Loan and Senior Notes (Details) - USD ($) $ in Millions		Sep. 25, 2017	Sep. 22, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Mar. 19, 2015	Dec. 31, 2014	Apr. 23, 2014
Debt Instrument [Line Items]
Unamortized discount				$ 12
Debt issuance costs				44	$ 36
Cash payment made in connection with redemption of debt				2,342	31	$ 18
Gain (loss) on extinguishment of debt				(28)	4	0
Cash and cash equivalents				1,116	248	229		$ 1,276
Restricted cash				653	3
New Term Loan Facility [Member]
Debt Instrument [Line Items]
Original principal	[1]			2,150
Unamortized discount				12
Debt issuance costs				27
Interest expense accrued				26	0	0
Prior Term Loan [Member]
Debt Instrument [Line Items]
Original principal	[2]			1,500
Principal repayment			$ 1,500
Interest expense accrued				49	67	63
Senior Notes due 2020 [Member]
Debt Instrument [Line Items]
Original principal				900
Interest expense accrued				$ 42	57	57
Interest rate				6.375%
Senior Notes due 2022 [Member]
Debt Instrument [Line Items]
Original principal				$ 600
Debt issuance costs				8	10
Interest expense accrued				$ 44	44	35
Interest rate				7.50%
Senior Notes Due 2025 [Member]
Debt Instrument [Line Items]
Original principal			450	$ 450
Debt issuance costs				9
Interest expense accrued				$ 7	0	$ 0
Interest rate				5.75%
Secured Debt [Member] | Term Loan Credit Facility [Member]
Debt Instrument [Line Items]
Debt issuance costs				$ 30
Secured Debt [Member] | New Term Loan Facility [Member]
Debt Instrument [Line Items]
Original principal			1,500
Unamortized original debt discount and issuance costs included in "Gain (loss) on extinguishment of debt"				4
Unamortized discount				11
Unamortized original issuance costs amortized over life of Term Loan Facility				13
Debt issuance costs				$ 17
Secured Debt [Member] | New Term Loan Facility [Member] | Adjusted LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate				3.00%
Secured Debt [Member] | Prior Term Loan [Member]
Debt Instrument [Line Items]
Original principal									$ 1,500
Principal repayment			1,400
Unamortized original debt discount and issuance costs included in "Gain (loss) on extinguishment of debt"				$ 1
Unamortized discount				3
Debt issuance costs				13
Secured Debt [Member] | Blocked Term Loan [Member]
Debt Instrument [Line Items]
Original principal			650
Proceeds from senior secured term loan				650
Interest amount				1
Senior Notes [Member] | Senior Notes due 2020 [Member]
Debt Instrument [Line Items]
Original principal		$ 900
Unamortized discount				8
Debt instrument, outstanding balance redeemed		896
Cash payment made in connection with redemption of debt		917
Interest expense accrued		7
Debt issuance costs, call premium		$ 14
Face value of notes repurchased					$ 4
Redemption price of debt repurchased					77.00%
Gain (loss) on extinguishment of debt				(22)	$ 1
Interest rate		6.375%
Senior Notes [Member] | Senior Notes due 2022 [Member]
Debt Instrument [Line Items]
Original principal							$ 600
Principal repayment				0
Debt issuance costs				$ 8	10
Face value of notes repurchased					$ 16
Redemption price of debt repurchased					76.00%
Gain (loss) on extinguishment of debt					$ 3
Interest rate							7.50%
Senior Notes [Member] | Senior Notes Due 2025 [Member]
Debt Instrument [Line Items]
Debt issuance costs			$ 9
Maturity date				Oct. 1, 2025
Wells Fargo Revolver [Member]
Debt Instrument [Line Items]
Debt issuance costs				$ 7
Wells Fargo Revolver [Member] | Adjusted LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate				1.00%
Wells Fargo Revolver [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Amount available to borrow				$ 232
[1]	Average effective interest rate of 4.9% during 2017.
[2]	Average effective interest rate of 5.1% and 4.9% during 2017 and 2016, respectively.

Debt, Lease Financing and Bridg

Debt, Lease Financing and Bridge Facility (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Principal repayments [Abstract]
2,018	$ 1
2,019	1
2,020	1
2,021	1
2,022	1
Thereafter	14
Total	19
Interest [Abstract]
2,018	3
2,019	3
2,020	2
2,021	2
2,022	2
Thereafter	10
Total	22
Total payments [Abstract]
2,018	4
2,019	4
2,020	3
2,021	3
2,022	3
Thereafter	24
Total	41
Debt financing fees	0	$ 0	$ 8
Bridge Facility [Member]
Total payments [Abstract]
Original principal	$ 600
Debt financing fees			8
Lease Financing [Member]
Debt Instrument [Line Items]
Weighted average interest rate	14.00%
Assets recorded under capital lease obligations	$ 23	21
Accumulated amortization related to assets recorded under capital lease obligations	8	6
Lease Financing [Member] | Maximum [Member]
Debt Instrument [Line Items]
Payments on capital leases	$ 1	$ 1	$ 1

Debt, Summary of Interest and D

Debt, Summary of Interest and Debt Expense, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Summary of interest and debt expense, net [Abstract]
Amortization of deferred debt issuance costs and discounts on debt	$ 15	$ 11	$ 11
Bridge facility	0	0	8
Capitalized interest	(2)	(3)	(6)
Other	7	9	8
Total interest and debt expense, net	188	185	176
Debt discount	12
Deferred debt issuance costs	44	36
Wells Fargo Revolver [Member]
Summary of interest and debt expense, net [Abstract]
Deferred debt issuance costs	7
Prior Term Loan [Member]
Summary of interest and debt expense, net [Abstract]
Interest on debt	49	67	63
New Term Loan Facility [Member]
Summary of interest and debt expense, net [Abstract]
Interest on debt	26	0	0
Debt discount	12
Deferred debt issuance costs	27
Senior Notes due 2020 [Member]
Summary of interest and debt expense, net [Abstract]
Interest on debt	42	57	57
Senior Notes due 2022 [Member]
Summary of interest and debt expense, net [Abstract]
Interest on debt	44	44	35
Deferred debt issuance costs	8	10
Senior Notes due 2025 [Member]
Summary of interest and debt expense, net [Abstract]
Interest on debt	7	$ 0	$ 0
Deferred debt issuance costs	$ 9

Asset Retirement Obligations (D

Asset Retirement Obligations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Activity related to asset retirement obligations [Roll Forward]
Balance, January 1	$ 76	$ 81
Additions	1	1
Accretion expense	5	5
Remeasurement/translation	5	1
Changes in estimates, including cost and timing of cash flows	0	(11)
Settlements/payments	(5)	(1)
Balance, December 31	82	76
Asset retirement obligations [Abstract]
Current portion included in "Accrued liabilities"			$ 3	$ 3
Noncurrent portion included in "Asset retirement obligations"			79	73
Asset retirement obligations	$ 76	$ 81	82	76
Assumptions used in determining asset retirement obligations [Abstract]
Environmental rehabilitation trust assets			$ 13	$ 13
Minimum [Member]
Assumptions used in determining asset retirement obligations [Abstract]
Asset retirement obligations, inflation rates	2.50%
Credit adjusted risk-free interest rates	7.00%
Maximum [Member]
Assumptions used in determining asset retirement obligations [Abstract]
Asset retirement obligations, inflation rates	4.20%
Credit adjusted risk-free interest rates	17.10%
Mines [Member] | Minimum [Member]
Assumptions used in determining asset retirement obligations [Abstract]
Estimated useful life	12 years
Mines [Member] | Maximum [Member]
Assumptions used in determining asset retirement obligations [Abstract]
Estimated useful life	27 years
Other Assets [Member] | Minimum [Member]
Assumptions used in determining asset retirement obligations [Abstract]
Estimated useful life	4 years
Other Assets [Member] | Maximum [Member]
Assumptions used in determining asset retirement obligations [Abstract]
Estimated useful life	33 years
TiO2 Pigment Facility [Member]
Assumptions used in determining asset retirement obligations [Abstract]
Additional lease term	25 years
Reduction in assets retirements obligations	$ (10)

Commitments and Contingencies87

Commitments and Contingencies (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Loss Contingencies [Line Items]
Loss contingency	$ 46
Summary of minimum rental commitments under non-cancelable operating leases [Abstract]
2,018	19
2,019	8
2,020	4
2,021	4
2,022	3
Thereafter	6
Total	44
Purchase commitments, fiscal year maturity [Abstract]
Purchase commitments due next year	149
Purchase commitments due in two years	55
Purchase commitments due in three years	43
Purchase commitments due in four years	34
Purchase commitments due in five years	24
Purchase commitments due thereafter	103
Letters of Credit [Member] | Wells Fargo Revolver [Member]
Loss Contingencies [Line Items]
Loss contingency	19
Bank Guarantees [Member] | ABSA Revolver [Member]
Loss Contingencies [Line Items]
Loss contingency	20
Bank Guarantees [Member] | Standard Bank [Member]
Loss Contingencies [Line Items]
Loss contingency	5
Performance Bonds [Member] | Westpac Banking Corporation [Member]
Loss Contingencies [Line Items]
Loss contingency	2
Cost of Goods Sold [Member]
Loss Contingencies [Line Items]
Total rental expense relating to operating lease	22	$ 21	$ 25
Selling, General and Administrative Expenses [Member]
Loss Contingencies [Line Items]
Total rental expense relating to operating lease	$ 2	$ 2	$ 2

Shareholders' Equity, Changes i

Shareholders' Equity, Changes in Outstanding Ordinary Shares (Details) - shares	Oct. 10, 2017	Dec. 31, 2017	Dec. 31, 2016
Class A [Member]
Changes in outstanding shares [Roll Forward]
Balance, beginning of period (in shares)		65,165,672	64,521,851
Shares issued for share-based compensation (in shares)		3,048,824	732,724
Shares cancelled for share-based compensation (in shares)		(623,920)	(89,062)
Shares issued upon options exercised (in shares)		165,974
Shares issued upon warrants exercised (in shares)		2,359,913	159
Exarro Share Transaction (in shares)		22,425,000
Balance, end of period (in shares)		92,541,463	65,165,672
Class A [Member] | Exxaro [Member]
Changes in outstanding shares [Roll Forward]
Exxaro Share Transaction (in shares)	(22,425,000)
Class B [Member]
Changes in outstanding shares [Roll Forward]
Balance, beginning of period (in shares)		51,154,280
Exxaro Share Transaction (in shares)		(22,425,000)
Balance, end of period (in shares)		28,729,280	51,154,280

Shareholders' Equity, Warrants

Shareholders' Equity, Warrants (Details) - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Class of Warrant or Right [Line Items]
Term of warrants from date of issuance	7 years
Expiry date of warrants	Feb. 14, 2018
Series A Warrants [Member]
Class of Warrant or Right [Line Items]
Cash receivable per share under warrant (in dollars per share)	$ 12.50
Exercise price of warrants (in dollars per share)	$ 51.21
Warrants outstanding (in shares)	37,033	239,306
Series A Warrants [Member] | Class A Ordinary Shares [Member]
Class of Warrant or Right [Line Items]
Number of shares warrants are entitled to purchase (in shares)	6.02
Series B Warrants [Member]
Class of Warrant or Right [Line Items]
Cash receivable per share under warrant (in dollars per share)	$ 12.50
Exercise price of warrants (in dollars per share)	$ 56.51
Warrants outstanding (in shares)	54,488	323,915
Series B Warrants [Member] | Class A Ordinary Shares [Member]
Class of Warrant or Right [Line Items]
Number of shares warrants are entitled to purchase (in shares)	6.03

Shareholders' Equity, Dividends

Shareholders' Equity, Dividends Declared (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Shareholders' Equity [Abstract]
Dividend per share (in dollars per share)	$ 0.045	$ 0.045	$ 0.045	$ 0.045	$ 0.045	$ 0.045	$ 0.045	$ 0.25
Total dividend	$ 6	$ 5	$ 6	$ 6	$ 6	$ 5	$ 5	$ 30	$ 23	$ 47	$ 118
Record date (close of business)	Nov. 20, 2017	Aug. 21, 2017	May 15, 2017	Mar. 6, 2017	Nov. 16, 2016	Aug. 17, 2016	May 16, 2016	Mar. 4, 2016

Shareholders' Equity, Accumulat

Shareholders' Equity, Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Changes in accumulated other comprehensive loss by component [Roll Forward]
Balance	$ 1,153	$ 1,104	$ 1,792
Other comprehensive income (loss)	87	100	(203)
Amounts reclassified from accumulated other comprehensive income (loss)	7	1	3
Balance	1,015	1,153	1,104
Accumulated Other Comprehensive Income (Loss) [Member]
Changes in accumulated other comprehensive loss by component [Roll Forward]
Balance	(497)	(598)	(398)
Balance	(403)	(497)	(598)
Cumulative Translation Adjustment [Member]
Changes in accumulated other comprehensive loss by component [Roll Forward]
Balance	(408)	(496)	(281)
Other comprehensive income (loss)	96	88	(215)
Amounts reclassified from accumulated other comprehensive income (loss)	0	0	0
Balance	(312)	(408)	(496)
Pension Liability Adjustment [Member]
Changes in accumulated other comprehensive loss by component [Roll Forward]
Balance	(92)	(102)	(117)
Other comprehensive income (loss)	(6)	8	12
Amounts reclassified from accumulated other comprehensive income (loss)	8	2	3
Balance	(90)	(92)	(102)
Unrealized Gains (losses) on Derivatives [Member]
Changes in accumulated other comprehensive loss by component [Roll Forward]
Balance	3	0	0
Other comprehensive income (loss)	(3)	4	0
Amounts reclassified from accumulated other comprehensive income (loss)	(1)	(1)	0
Balance	$ (1)	$ 3	$ 0

Share-based Compensation, Summa

Share-based Compensation, Summary of Share-based Compensation Expense (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense (continuing operations)	[1]	$ 31	$ 24	$ 22
Share-based compensation expense, discontinued operations		2	1
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation expense, discontinued operations				1
Restricted Shares and Restricted Share Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense (continuing operations)		30	20	15
Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense (continuing operations)		0	2	5
T-Bucks Employee Participation Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense (continuing operations)		$ 1	$ 2	$ 2
[1]	Excludes $2 million, $1 million and less than $1 million of share-based compensation relating to discontinued operations. See Note 3.

Share-based Compensation, Trono

Share-based Compensation, Tronox Limited Management Equity Incentive Plan (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Common Class A [Member]
Options, Number of Options [Roll Forward]
Exercised (in shares)	(165,974)
Tronox Limited Management Equity Incentive Plan [Member] | Restricted Shares [Member]
Restricted Shares and Restricted Share Units ("RSUs"), Number of Shares [Roll Forward]
Outstanding, beginning of period (in shares)	284,400
Vested (in shares)	(107,928)
Outstanding, end of period (in shares)	176,472	284,400
Expected to vest, end of period (in shares)	176,472
Restricted Shares and Restricted Share Units ("RSUs"), Weighted Average Grant Date Fair Value [Abstract]
Outstanding, beginning of period (in dollars per share)	$ 6.09
Granted (in dollars per share)		$ 4.16	$ 22.60
Vested (in dollars per share)	8
Outstanding, ending of period (in dollars per share)	4.92	6.09
Expected to vest, ending of period (in dollars per share)	$ 4.92
Weighted average period of recognition for unrecognized compensation expense	1 year
Weighted-average grant-date fair value of restricted shares (in dollars per share)		$ 4.16	$ 22.60
Total fair value of restricted shares and RSUs vested	$ 1	$ 3	$ 4
Tronox Limited Management Equity Incentive Plan [Member] | Restricted Shares [Member] | Maximum [Member]
Restricted Shares and Restricted Share Units ("RSUs"), Weighted Average Grant Date Fair Value [Abstract]
Unrecognized compensation expense related to nonvested restricted shares and nonvested RSUs, adjusted for estimated forfeitures	$ 1
Tronox Limited Management Equity Incentive Plan [Member] | Restricted Share Units (RSUs) [Member]
Restricted Shares and Restricted Share Units ("RSUs"), Number of Shares [Roll Forward]
Outstanding, beginning of period (in shares)	5,587,331
Granted (in shares)	3,089,941
Vested (in shares)	(2,392,662)
Forfeited (in shares)	(806,341)
Outstanding, end of period (in shares)	5,478,269	5,587,331
Expected to vest, end of period (in shares)	5,849,495
Restricted Shares and Restricted Share Units ("RSUs"), Weighted Average Grant Date Fair Value [Abstract]
Outstanding, beginning of period (in dollars per share)	$ 7.19
Granted (in dollars per share)	17.55	$ 4.07	$ 23.47
Vested (in dollars per share)	9.55
Forfeited (in dollars per share)	11.83
Outstanding, ending of period (in dollars per share)	11.33	7.19
Expected to vest, ending of period (in dollars per share)	$ 10.27
Unrecognized compensation expense related to nonvested restricted shares and nonvested RSUs, adjusted for estimated forfeitures	$ 33
Weighted average period of recognition for unrecognized compensation expense	2 years
Weighted-average grant-date fair value of restricted shares (in dollars per share)	$ 17.55	$ 4.07	$ 23.47
Total fair value of restricted shares and RSUs vested	$ 23	$ 10	$ 6
Tronox Limited Management Equity Incentive Plan [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)	1,397,471
Tronox Limited Management Equity Incentive Plan [Member] | Restricted Stock Units (RSUs), Time-Based Awards [Member] | Tranche One [Member]
Restricted Shares and Restricted Share Units ("RSUs"), Number of Shares [Roll Forward]
Granted (in shares)	1,075
Tronox Limited Management Equity Incentive Plan [Member] | Restricted Stock Units (RSUs), Time-Based Awards [Member] | Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	6 months
Restricted Shares and Restricted Share Units ("RSUs"), Number of Shares [Roll Forward]
Granted (in shares)	14,053
Tronox Limited Management Equity Incentive Plan [Member] | Restricted Stock Units (RSUs), Time-Based Awards [Member] | Tranche Three [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	1 year
Restricted Shares and Restricted Share Units ("RSUs"), Number of Shares [Roll Forward]
Granted (in shares)	100,160
Tronox Limited Management Equity Incentive Plan [Member] | Restricted Stock Units (RSUs), Time-Based Awards [Member] | Tranche Four [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	28 months
Restricted Shares and Restricted Share Units ("RSUs"), Number of Shares [Roll Forward]
Granted (in shares)	1,951
Tronox Limited Management Equity Incentive Plan [Member] | Restricted Stock Units (RSUs), Time-Based Awards [Member] | Tranche Five [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	31 months
Restricted Shares and Restricted Share Units ("RSUs"), Number of Shares [Roll Forward]
Granted (in shares)	12,869
Tronox Limited Management Equity Incentive Plan [Member] | Restricted Stock Units (RSUs), Time-Based Awards [Member] | Tranche Six [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Restricted Shares and Restricted Share Units ("RSUs"), Number of Shares [Roll Forward]
Granted (in shares)	773,774
Tronox Limited Management Equity Incentive Plan [Member] | Restricted Stock Units (RSUs), Performance-Based Awards [Member] | Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	28 months
Restricted Shares and Restricted Share Units ("RSUs"), Number of Shares [Roll Forward]
Granted (in shares)	1,949
Tronox Limited Management Equity Incentive Plan [Member] | Restricted Stock Units (RSUs), Performance-Based Awards [Member] | Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	31 months
Restricted Shares and Restricted Share Units ("RSUs"), Number of Shares [Roll Forward]
Granted (in shares)	154,639
Tronox Limited Management Equity Incentive Plan [Member] | Restricted Stock Units (RSUs), Performance-Based Awards [Member] | Tranche Three [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Restricted Shares and Restricted Share Units ("RSUs"), Number of Shares [Roll Forward]
Granted (in shares)	1,145,933
Tronox Limited Management Equity Incentive Plan [Member] | Restricted Stock Units (RSUs), Performance-Based Awards [Member] | Tranche Four [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	40 months
Restricted Shares and Restricted Share Units ("RSUs"), Number of Shares [Roll Forward]
Granted (in shares)	883,538
Tronox Limited Management Equity Incentive Plan [Member] | Restricted Stock Units (RSUs), Performance-Based Awards [Member] | Tranche Five [Member]
Restricted Shares and Restricted Share Units ("RSUs"), Number of Shares [Roll Forward]
Granted (in shares)	788,588
Tronox Limited Management Equity Incentive Plan [Member] | Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Restricted Shares and Restricted Share Units ("RSUs"), Weighted Average Grant Date Fair Value [Abstract]
Granted (in dollars per share)	$ 0	$ 0	$ 7.04
Weighted-average grant-date fair value of restricted shares (in dollars per share)	$ 0	$ 0	$ 7.04
Options, Number of Options [Roll Forward]
Outstanding, beginning of period (in shares)	1,970,481
Exercised (in shares)	(165,974)	0
Forfeited (in shares)	(4,273)
Expired (in shares)	(93,101)
Outstanding, end of period (in shares)	1,707,133	1,970,481
Expected to vest, end of period (in shares)	794
Exercisable, end of period (in shares)	1,706,339
Options, Weighted Average Exercise Price [Abstract]
Outstanding, beginning of period (in dollars per share)	$ 21.19
Exercised (in dollars per share)	20.10
Forfeited (in dollars per share)	21.98
Expired (in dollars per share)	21.58
Outstanding, end of period (in dollars per share)	21.27	$ 21.19
Expected to vest, end of period (in dollars per share)	22.69
Exercisable, end of period (in dollars per share)	$ 21.27
Options issued (in shares)	0	0	2,380
Options, Additional Disclosures [Abstract]
Weighted average remaining contractual life, outstanding	4 years 3 months 14 days	6 years 4 months 17 days
Weighted average remaining contractual life, expected to vest, end of period	7 years 4 days
Weighted average remaining contractual life, exercisable, end of period	4 years 3 months 14 days
Intrinsic value, beginning of period	$ 0
Intrinsic value, end of period	1	$ 0
Intrinsic value, expected to vest	0
Intrinsic value, exercisable	1
Intrinsic value of options exercised	1	0
Cash received from exercise of stock options	3	0	$ 3
Unrecognized compensation expense related to options, adjusted for estimated forfeitures	$ 0
Tronox Limited Management Equity Incentive Plan [Member] | Options [Member] | Maximum [Member]
Options, Additional Disclosures [Abstract]
Intrinsic value of options exercised			$ 1
Unrecognized compensation expense related to options, adjusted for estimated forfeitures		$ 1
Tronox Limited Management Equity Incentive Plan [Member] | Common Class A [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares, awards granted (in shares)	20,781,225
Number of additional shares authorized (in shares)	8,000,000

Share-based Compensation, T-Buc

Share-based Compensation, T-Bucks EPP and Long Term Incentive Plan (Details) ZAR in Millions, $ in Millions	1 Months Ended	12 Months Ended
	Jun. 30, 2017shares	Dec. 31, 2012USD ($)	Dec. 31, 2012ZAR	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
T-Bucks EPP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount funded to the trust		$ 15	ZAR 124
Shares sold by the Trust (in shares) | shares	546,403
Long-term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Long term incentive plan liability				$ 0
Long-term Incentive Plan [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Long term incentive plan liability					$ 1

Pension and Other Postretirem95

Pension and Other Postretirement Healthcare Benefits (Details) € in Millions, $ in Millions		Nov. 01, 2016USD ($)	Nov. 30, 2016USD ($)	Aug. 31, 2016USD ($)	Sep. 30, 2016USD ($)	Sep. 30, 2016EUR (€)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Defined Benefit Plan Disclosure [Line Items]
Curtailment gain (loss)	[1]						$ 0	$ (1)	$ 0
Netherlands [Member]
Defined Benefit Plan Disclosure [Line Items]
Curtailment gain (loss)					$ 1
Amount transferred into accounts established with pension fund for full settlement		$ 126	$ 0	$ 1
Unrecognized settlement gain recorded in accumulated other comprehensive income (loss)							31
Actuarial losses and prior service					$ (21)	€ (19)
Settlement loss recorded in other income (expense)							(2)
Postretirement Healthcare Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Curtailment gain (loss)							0	0	0
Actuarial losses and prior service							1	0
Settlement loss recorded in other income (expense)							$ 0	0	0
Postretirement Healthcare Plans [Member] | U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Funding Status [Extensible List]							us-gaap:UnfundedPlanMember
Postretirement Healthcare Plans [Member] | U.S. [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
One-time subsidy amount towards medical cost									1
Postretirement Healthcare Plans [Member] | South Africa [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of post-retirement and death-in-service benefits for members employed before March 1, 1994							100.00%
Annual percentage of post-retirement and death-in-service benefits for members employed on or after March 1, 1994 but before January 1, 2002							2.00%
Percentage of post-retirement and death-in-service benefits for members employed on or after January 1, 2002							0.00%
Postretirement Healthcare Plans [Member] | South Africa [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of post-retirement and death-in-service benefits for members employed on or after March 1, 1994 but before January 1, 2002							50.00%
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Curtailment gain (loss)							$ 0	1	0
Actuarial losses and prior service							(25)	(43)
Settlement loss recorded in other income (expense)							0	$ (2)	$ 0
Pension Plan [Member] | Alkali Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Actuarial losses and prior service							$ (5)
[1]	Losses related to our Netherlands pension plan. See Note 20.

Pension and Other Postretirem96

Pension and Other Postretirement Healthcare Benefits, Multiemployer Plans (Details) - Multiemployer Plans, Pension [Member] - Netherlands Collective Contribution Plan [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Multiemployer Plans [Line Items]
Required employer contribution percentage	20.60%
Funded status	At least 80 percent
Pension Fund	PGB
Pension Protection Act Zone Status		Green
FIP/RP/Pending/Implemented	No
Tronox Contributions	$ 4	$ 4
Surcharge Imposed	No
Expiration date of Collective-Bargaining Agreement	Dec. 31, 2019
Significance of employer's contribution	false

Pension and Other Postretirem97

Pension and Other Postretirement Healthcare Benefits, Summary of Benefit Obligations and Plan Assets Associated with Benefit Plans (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Classification of amounts recognized in the Consolidated Balance Sheets [Abstract]
Pension and postretirement healthcare benefits		$ (103)	$ (115)
U.S. [Member] | U.S. Qualified Plan [Member] | Qualified Plan [Member]
Change in benefit obligations [Roll Forward]
Benefit obligation, beginning of year		369
Benefit obligation, end of year		377	369
Change in plan assets [Roll Forward]
Fair value of plan assets, beginning of year		262
Fair value of plan assets, end of year		282	262
Net over (under) funded status of plans		(95)	(107)
Classification of amounts recognized in the Consolidated Balance Sheets [Abstract]
Estimated future employer contribution within next fiscal year		21
Retirement Plans [Member]
Change in benefit obligations [Roll Forward]
Benefit obligation, beginning of year		369	506
Service cost		0	0	$ 0
Interest cost		15	19	19
Net actuarial (gains) losses		25	43
Foreign currency rate changes		0	(5)
Contributions by plan participants		0	0
Curtailment		0	0
Settlement		0	(155)
Plan amendments		0	0
Benefits paid		(26)	(34)
Administrative expenses		(6)	(5)
Benefit obligation, end of year		377	369	506
Change in plan assets [Roll Forward]
Fair value of plan assets, beginning of year		262	375
Actual return on plan assets		33	41
Employer contributions	[1]	19	15
Settlement		0	(126)
Foreign currency rate changes		0	(4)
Benefits paid		(26)	(34)
Administrative expenses		(6)	(5)
Fair value of plan assets, end of year		282	262	375
Net over (under) funded status of plans		(95)	(107)
Classification of amounts recognized in the Consolidated Balance Sheets [Abstract]
Accrued liabilities		0	0
Pension and postretirement healthcare benefits		(95)	(107)
Total liabilities		(95)	(107)
Accumulated other comprehensive (income) loss		92	87
Total		(3)	(20)
Retirement Plans [Member] | Alkali Qualified Plan [Member]
Change in benefit obligations [Roll Forward]
Net actuarial (gains) losses		5
Postretirement Healthcare Plans [Member]
Change in benefit obligations [Roll Forward]
Benefit obligation, beginning of year		8	7
Service cost		0	0	0
Interest cost		1	1	1
Net actuarial (gains) losses		(1)	0
Foreign currency rate changes		0	0
Contributions by plan participants		0	0
Curtailment		0	0
Settlement		0	0
Plan amendments		0	0
Benefits paid		0	0
Administrative expenses		0	0
Benefit obligation, end of year		8	8	7
Change in plan assets [Roll Forward]
Fair value of plan assets, beginning of year		0	0
Actual return on plan assets		0	0
Employer contributions	[1]	0	0
Settlement		0	0
Foreign currency rate changes		0	0
Benefits paid		0	0
Administrative expenses		0	0
Fair value of plan assets, end of year		0	0	$ 0
Net over (under) funded status of plans		(8)	(8)
Classification of amounts recognized in the Consolidated Balance Sheets [Abstract]
Accrued liabilities		0	0
Pension and postretirement healthcare benefits		(8)	(8)
Total liabilities		(8)	(8)
Accumulated other comprehensive (income) loss		(2)	(2)
Total		$ (10)	$ (10)
[1]	We expect 2018 contributions to be $21 million for the qualified retirement plan.

Pension and Other Postretirem98

Pension and Other Postretirement Healthcare Benefits, Accumulated Benefit Obligations and Projected Benefit Obligations (Details) - U.S. [Member] - U.S. Qualified Plan [Member] - Qualified Plan [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Projected minimum funding requirement	$ 11
Accumulated Benefit Obligation	377	$ 369
Projected Benefit Obligation	(377)	(369)
Fair value of plan assets	282	262
Net over (under) funded status of plans	$ (95)	$ (107)

Pension and Other Postretirem99

Pension and Other Postretirement Healthcare Benefits, Summary of Expected Benefit Payments (Details) $ in Millions	Dec. 31, 2017USD ($)
Retirement Plans [Member]
Expected future benefit payments [Abstract]
2,018	$ 28
2,019	28
2,020	27
2,021	27
2,022	27
2023-2027	119
Postretirement Healthcare Plans [Member]
Expected future benefit payments [Abstract]
2,018	0
2,019	0
2,020	0
2,021	0
2,022	0
2023-2027	$ 2

Pension and Other Postretire100

Pension and Other Postretirement Healthcare Benefits, Components of Net Periodic Pension and Postretirement Healthcare Cost (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net periodic cost [Abstract]
Curtailment gains	[1]	$ 0	$ 1	$ 0
Retirement Plans [Member]
Net periodic cost [Abstract]
Service cost		0	0	0
Interest cost		15	19	19
Expected return on plan assets		(15)	(19)	(22)
Net amortization of actuarial loss and prior service credit		3	2	3
Curtailment gains		0	(1)	0
Settlement losses		0	2	0
Total net periodic cost - continuing operations		3	3	0
Unrecognized actuarial gain (loss)		3
Postretirement Healthcare Plans [Member]
Net periodic cost [Abstract]
Service cost		0	0	0
Interest cost		1	1	1
Expected return on plan assets		0	0	0
Net amortization of actuarial loss and prior service credit		0	0	0
Curtailment gains		0	0	0
Settlement losses		0	0	0
Total net periodic cost - continuing operations		1	$ 1	$ 1
Unrecognized actuarial gain (loss)		$ 3
[1]	Losses related to our Netherlands pension plan. See Note 20.

Pension and Other Postretire101

Pension and Other Postretirement Healthcare Benefits, Weighted Average Assumptions Used (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016		Dec. 31, 2015
U.S. [Member] | U.S. Qualified Plan [Member] | Qualified Plan [Member]
Weighted average assumptions used to determine net periodic cost [Abstract]
Discount rate	4.25%	4.75%		3.75%
Expected return on plan assets	5.64%	5.64%		5.95%
Weighted average assumptions used in estimating actuarial present value of benefit obligations [Abstract[
Discount rate	3.71%	4.25%		4.75%
Outstanding corporate bonds	$ 50	$ 50
Increase (decrease) in projected benefit obligation	$ (3)
Netherlands [Member]
Weighted average assumptions used to determine net periodic cost [Abstract]
Discount rate	0.00%	2.25%		2.25%
Expected return on plan assets	0.00%	4.25%		4.75%
Weighted average assumptions used in estimating actuarial present value of benefit obligations [Abstract[
Discount rate	0.00%	1.50%	[1]	2.25%
Postretirement Healthcare Plans [Member] | South Africa [Member]
Weighted average assumptions used in estimating actuarial present value of benefit obligations [Abstract[
Discount rate	11.54%	10.87%		10.94%
[1]	This reflects the rate used to calculate the final Netherlands Plan benefit obligation immediately before the Settlement Date.

Pension and Other Postretire102

Pension and Other Postretirement Healthcare Benefits, Asset Categories and Associated Asset Allocations for Company's Funded Retirement Plans (Details) - FundManager	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Mutual Fund [Member]
Defined Benefit Plan Disclosure [Line Items]
Number of fund managers with whom plan assets are invested	9
Equity Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Number of fund managers with whom plan assets are invested	8
Fixed Income Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Number of fund managers with whom plan assets are invested	1
Money Market Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Number of fund managers with whom plan assets are invested	1
U.S. [Member] | U.S. Qualified Plan [Member] | Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual	100.00%	100.00%
Target	100.00%	100.00%
U.S. [Member] | U.S. Qualified Plan [Member] | Qualified Plan [Member] | Commingled Equity Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual	50.00%	36.00%
Target	50.00%	38.00%
U.S. [Member] | U.S. Qualified Plan [Member] | Qualified Plan [Member] | Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual	48.00%	61.00%
Target	48.00%	62.00%
U.S. [Member] | U.S. Qualified Plan [Member] | Qualified Plan [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual	2.00%	3.00%
Target	2.00%	0.00%

Pension and Other Postretire103

Pension and Other Postretirement Healthcare Benefits, Summary of Fair Value of Pension Investments (Details) - U.S. [Member] - U.S. Qualified Plan [Member] - Qualified Plan [Member] - USD ($) $ in Millions		Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		$ 282	$ 262
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		216	184
Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		66	78
Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0	0
Commingled Equity Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		94	95
Commingled Equity Funds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[1]	94	95
Commingled Equity Funds [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0	0
Commingled Equity Funds [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0	0
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		47
Equity Securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[2]	47
Equity Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0
Equity Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0
Corporate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		66	78
Corporate [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0	0
Corporate [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[3]	66	78
Corporate [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0	0
Government [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		68	81
Government [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[4]	68	81
Government [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0	0
Government [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0	0
Commingled Cash Equivalent Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		7	8
Commingled Cash Equivalent Funds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[5]	7	8
Commingled Cash Equivalent Funds [Member] | Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0	0
Commingled Cash Equivalent Funds [Member] | Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		$ 0	$ 0
[1]	For commingled equity funds owned by the funds, fair value is based on observable quoted prices on active exchanges, which are level 1 inputs.
[2]	For equity securities, fair value is based on observable quoted prices on active exchanges, which are level 1 inputs.
[3]	For corporate related debt securities, the fair value is based on observable inputs of comparable market transactions, which are level 2 inputs.
[4]	For government related debt securities, the fair value is based on observable quoted prices on active exchanges, which are level 1 inputs.
[5]	For commingled cash equivalents funds, fair value is based on observable quoted prices on active exchanges, which are level 1 inputs.

Pension and Other Postretire104

Pension and Other Postretirement Healthcare Benefits, Defined Contribution Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2006
Qualified Plan [Member] | U.S. Savings Investment Plan [Member]
Defined Contribution Plan Disclosure [Line Items]
Employee contribution percentage, first portion	6.00%	6.00%	6.00%
Employer matching contribution percentage, first portion	100.00%	100.00%	100.00%
Discretionary contribution percentage	6.00%	6.00%	6.00%
Compensation expenses associated with matching contribution	$ 4	$ 3	$ 4
Discretionary contribution vesting period	3 years
Compensation expense associated with discretionary contribution	$ 5	4	4
Nonqualified Plan [Member] | U.S. Benefit Restoration Plan [Member]
Defined Contribution Plan Disclosure [Line Items]
Maximum employee contribution percentage				20.00%
Compensation expenses associated with matching contribution	$ 1	$ 1	$ 1

Related Party Transactions (Det

Related Party Transactions (Details) - Exxaro [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Related Party Transaction [Line Items]
Selling, general and administrative expenses to related party transaction	$ 1	$ 1	$ 2
Amount to related party capitalized in property, plant and equipment		2	$ 3
Maximum [Member]
Related Party Transaction [Line Items]
Amount to related party capitalized in property, plant and equipment	1
Related party payables	$ 1	$ 1

Segment Information, Segment Re

Segment Information, Segment Reporting Information (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Net sales (TiO2)	$ 464	$ 435	$ 421	$ 378	$ 352	$ 339	$ 333	$ 285	$ 1,698	$ 1,309	$ 1,510
Income (loss) from operations									138	(56)	(201)
Interest and debt expense, net									(188)	(185)	(176)
(Gain) loss on extinguishment of debt									(28)	4	0
Other income (expense), net									(9)	(27)	28
Income (loss) from continuing operations before income taxes									(87)	(264)	(349)
Operating Segments [Member] | TiO2 Segment [Member]
Segment Reporting Information [Line Items]
Income (loss) from operations									261	6	(127)
Corporate Segment [Member]
Segment Reporting Information [Line Items]
Income (loss) from operations									$ (123)	$ (62)	$ (74)

Segment Information, Net Sale t

Segment Information, Net Sale to External Customers, by Geographic Region (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 464	$ 435	$ 421	$ 378	$ 352	$ 339	$ 333	$ 285	$ 1,698	$ 1,309	$ 1,510
Geographical Components [Member] | U.S. Operations [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									663	570	621
Geographical Components [Member] | Australia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									452	352	380
Geographical Components [Member] | South Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									350	200	313
Geographical Components [Member] | The Netherlands [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									$ 233	$ 187	$ 196

Segment Information, Net Sales

Segment Information, Net Sales to External Customers, by Product Segment (Details) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2017USD ($)	Sep. 30, 2017USD ($)	Jun. 30, 2017USD ($)	Mar. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Sep. 30, 2016USD ($)	Jun. 30, 2016USD ($)	Mar. 31, 2016USD ($)	Dec. 31, 2017USD ($)Customer	Dec. 31, 2016USD ($)Customer	Dec. 31, 2015USD ($)Customer
Revenue from External Customer [Line Items]
Net sales	$ 464	$ 435	$ 421	$ 378	$ 352	$ 339	$ 333	$ 285	$ 1,698	$ 1,309	$ 1,510
Pigment [Member]
Revenue from External Customer [Line Items]
Net sales									1,211	966	976
Titanium Feedstock and Co-Products [Member]
Revenue from External Customer [Line Items]
Net sales									434	286	426
Electrolytic [Member]
Revenue from External Customer [Line Items]
Net sales									$ 53	$ 57	$ 108
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | 10 Largest Third-party TiO2 Customers [Member]
Revenue, Major Customer [Line Items]
Number of largest customers representing specified percentage of net sales | Customer									10	10	10
Concentration percentage									35.00%	36.00%	40.00%
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Pigment Customer [Member]
Revenue, Major Customer [Line Items]
Number of largest customers representing specified percentage of net sales | Customer										1	1

Segment Information, Schedule o

Segment Information, Schedule of Depreciation, Amortization and Depletion by Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Depreciation, amortization and depletion	$ 182	$ 177	$ 253
Operating Segments [Member] | TiO2 Segment [Member]
Segment Reporting Information [Line Items]
Depreciation, amortization and depletion	177	171	247
Corporate [Member]
Segment Reporting Information [Line Items]
Depreciation, amortization and depletion	$ 5	$ 6	$ 6

Segment Information, Schedul110

Segment Information, Schedule of Capital Expenditures by Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Capital expenditures	$ 91	$ 86	$ 165
Operating Segments [Member] | TiO2 Segment [Member]
Segment Reporting Information [Line Items]
Capital expenditures	89	84	164
Corporate [Member]
Segment Reporting Information [Line Items]
Capital expenditures	$ 2	$ 2	$ 1

Segment Information, Schedul111

Segment Information, Schedule of Total Assets by Segments (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 4,864	$ 4,964
Continuing Operations [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	4,864	3,293
Continuing Operations [Member] | Operating Segments [Member] | TiO2 Segment [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	3,058	2,991
Continuing Operations [Member] | Corporate [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 1,806	$ 302

Segment Information, Schedul112

Segment Information, Schedule of Property, Plant and Equipment, Net and Mineral Leaseholds, Net, by Geographic Region (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Property plant and equipment and mineral leaseholds, net	$ 2,000	$ 1,969
U.S. Operations [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property plant and equipment and mineral leaseholds, net	193	194
South Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property plant and equipment and mineral leaseholds, net	919	844
Australia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property plant and equipment and mineral leaseholds, net	849	896
NETHERLANDS [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property plant and equipment and mineral leaseholds, net	$ 39	$ 35

Quarterly Results of Operati113

Quarterly Results of Operations (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended												12 Months Ended
	Dec. 31, 2017		Sep. 30, 2017		Jun. 30, 2017		Mar. 31, 2017		Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017		Dec. 31, 2016		Dec. 31, 2015
Quarterly Results of Operations (Unaudited) [Abstract]
Net sales	$ 464		$ 435		$ 421		$ 378		$ 352	$ 339	$ 333	$ 285	$ 1,698		$ 1,309		$ 1,510
Cost of goods sold	339		329		327		315		298	291	295	291	1,310		1,175		1,491
Gross profit	125		106		94		63		54	48	38	(6)	388		134		19
Net income (loss) from continuing operations	2		(25)		(17)		(53)		99	(62)	(62)	(114)	(93)		(139)		(372)
Net income (loss) from discontinued operations, net of tax	0		(216)	[1]	22		15		24	23	12	20	(179)		79		55
Net income (loss)	2	[2]	(241)	[2]	5	[2]	(38)	[2]	123	(39)	(50)	(94)	(272)		(60)		(317)
Net income (loss) attributable to noncontrolling interest	2		6		2		3		2	(2)	2	(1)	13		1		12
Net income (loss) attributable to Tronox Limited	$ 0	[2]	$ (247)	[2]	$ 3	[2]	$ (41)	[2]	$ 121	$ (37)	$ (52)	$ (93)	$ (285)		$ (61)		$ (329)
Net income (loss) per share from continuing operations, basic and diluted (in dollars per share)	$ 0		$ (0.26)		$ (0.16)		$ (0.48)						$ (0.89)	[3]	$ (1.20)	[3]	$ (3.31)	[3]
Net income (loss) per share from discontinued operations, basic and diluted (in dollars per share)	$ 0		$ (1.81)		$ 0.18		$ 0.13						$ (1.50)	[3]	$ 0.68	[3]	$ 0.47	[3]
Income (loss) from continuing operations per share, basic (in dollars per share)									$ 0.84	$ (0.53)	$ (0.55)	$ (0.97)
Income (loss) from continuing operations per share, diluted (in dollars per share)									0.81	(0.53)	(0.55)	(0.97)
Income (loss) from discontinued operations per share, basic (in dollars per share)									0.21	0.20	0.11	0.17
Income (loss) from discontinued operations per share, diluted (in dollars per share)									$ 0.20	$ 0.20	$ 0.11	$ 0.17
Quantifying Misstatement in Current Year Financial Statements [Line Items]
Net income (loss)	$ 2		$ (25)		$ (17)		$ (53)		$ 99	$ (62)	$ (62)	$ (114)	$ (93)		$ (139)		$ (372)
Net income (loss) per share from continuing operations, basic and diluted (in dollars per share)	$ 0		$ (0.26)		$ (0.16)		$ (0.48)						$ (0.89)	[3]	$ (1.20)	[3]	$ (3.31)	[3]
Alkali Chemicals Group [Member]
Quarterly Results of Operations (Unaudited) [Abstract]
Net income (loss) from discontinued operations, net of tax													$ (179)		$ 79		$ 55
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Pre-tax loss on disposal of discontinued operation													$ (233)		$ 0		$ 0
Out of Period Adjustments [Member]
Quarterly Results of Operations (Unaudited) [Abstract]
Net income (loss) from continuing operations	$ (2)
Net income (loss) per share from continuing operations, basic and diluted (in dollars per share)	$ (0.01)
Quantifying Misstatement in Current Year Financial Statements [Line Items]
Net income (loss)	$ (2)
Net income (loss) per share from continuing operations, basic and diluted (in dollars per share)	$ (0.01)
[1]	Includes a loss of $233 million on the Alkali Sale.
[2]	During the fourth quarter of 2017, we recorded out-of-period adjustments that should have been recorded previously that decreased net income (loss) from continuing operations by $2 million and decreased income from continuing operations per share by $0.01. After evaluating the quantitative and qualitative aspects of the adjustments, we concluded the effect of these adjustments, individually and in the aggregate, was not material to our previously issued interim and annual consolidated financial statements and is not material to our 2017 consolidated financial statements.
[3]	Net loss per ordinary share amounts were calculated from exact, not rounded net loss and share information.