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Quarterly Results of Operations - Schedule of Quarterly Results of Operations (Parenthetical) (Detail) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Insurance recoveries |  |  |  |  |  |  |  |  | $ 0.4 | $ 3.7 | $ 10.4
Deferred income taxes expense (benefit) |  |  |  |  |  |  |  |  | (31.0) | 86.4 | 9.9
Contract related intangible asset impairment |  |  |  | $ 5.1 |  |  |  |  | 5.1 |  |
Business interruption insurance proceeds | $ 0.9 |  | $ 1.4 | $ 2.0 |  |  |  |  | 4.3 |  |
Current Income Tax Expense (Benefit) |  |  |  |  |  |  |  |  | 37.0 | 10.9 | $ 22.6
Non-cash income tax expense related to uncertain tax positions | 7.2 |  |  |  |  |  |  |  |  |  |
Kronos Worldwide, Inc. | US-Canada APA |  |  |  |  |  |  |  |  |  |  |
Current Income Tax Expense (Benefit) | 2.2 | $ (5.6) |  |  |  |  |  |  |  |  |
Kronos Worldwide, Inc. | Direct investment in subsidiary excess carrying amount |  |  |  |  |  |  |  |  |  |  |
Deferred income taxes expense (benefit) |  |  |  |  | $ (29.3) | $ (29.3) | $ (29.3) |  | 6.5 |  |
Germany and Belgian | Kronos Worldwide, Inc. |  |  |  |  |  |  |  |  |  |  |
Non-cash deferred income tax expense |  |  |  |  | 6.4 | 2.3 | 150.3 |  |  |  |
Deferred income taxes expense (benefit) | (4.3) | $ (0.8) | $ 2.9 |  |  |  |  |  |  |  |
Attributable to Parent Net of Tax |  |  |  |  |  |  |  |  |  |  |
Insurance recoveries |  |  |  |  |  |  |  | $ 3.0 |  |  |
Chemicals |  |  |  |  |  |  |  |  |  |  |
Business interruption insurance proceeds |  |  |  |  |  |  |  |  | $ 4.3 |  |
Waste Management |  |  |  |  |  |  |  |  |  |  |
Out of period adjustment to transaction costs related to proposed sale | 4.3 |  |  |  |  |  |  |  |  |  |
Out of period adjustment to transaction costs net of tax related to proposed sale | $ 2.7 |  |  |  |  |  |  |  |  |  |
Employee Severance | Chemicals |  |  |  |  |  |  |  |  |  |  |
Restructuring charges |  |  |  |  | $ 0.2 | $ 0.4 | $ 21.1 |  |  | $ 21.7 |

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