XML 105 R87.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Segment Information, Net Sales to External Customers, by Product Segment (Details) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2017 USD ($) Customer | Mar. 31, 2016 USD ($) Customer
Revenue from External Customer [Line Items] |  |
Net sales | $ 569 | $ 476
Pigment [Member] |  |
Revenue from External Customer [Line Items] |  |
Net sales | 272 | 216
Alkali [Member] |  |
Revenue from External Customer [Line Items] |  |
Net sales | 191 | 191
Titanium Feedstock [Member] |  |
Revenue from External Customer [Line Items] |  |
Net sales | 92 | 57
Electrolytic [Member] |  |
Revenue from External Customer [Line Items] |  |
Net sales | $ 14 | $ 12
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
Concentration percentage | 25.00% | 20.00%
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | 10 Largest Alkali Customers [Member] |  |
Revenue, Major Customer [Line Items] |  |
Number of largest customers representing specified percentage of net sales | Customer | 10 | 10
Concentration percentage | 22.00% | 25.00%
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | ANSAC [Member] |  |
Revenue, Major Customer [Line Items] |  |
Concentration percentage | 13.00% | 13.00%

X
- Definition Refers to the number of largest customers representing a specified percentage of net sales of an entity. + References No definition available. + Details
Name: | trox_NumberOfLargestCustomersRepresentingSpecifiedPercentageOfNetSales
Namespace Prefix: | trox_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6351-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13531-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6404-108592 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13537-108611 + Details
Name: | us-gaap_ConcentrationRiskPercentage1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_EntityWideRevenueMajorCustomerLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(a)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
Name: | us-gaap_SalesRevenueGoodsNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_ProductOrServiceAxis=trox_PigmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ProductOrServiceAxis=trox_AlkaliMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ProductOrServiceAxis=trox_TitaniumFeedstockAndCoProductsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ProductOrServiceAxis=trox_ElectrolyticMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_SalesRevenueNetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CustomerConcentrationRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorCustomersAxis=trox_TenLargestThirdPartyTiO2CustomersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorCustomersAxis=trox_TenLargestAlkaliCustomersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorCustomersAxis=trox_ANSACMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |