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Stockholders' Equity - Additional Information (Detail) - shares | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Stockholders Equity Note [Abstract] |  |  |  |
Existing long-term incentive plan |  |  |  | 200,000
Shares available for future award under proposed long term incentive plan | 163,500 |  |  |
Shares awarded under proposed long term incentive plan | 13,500 | 8,000 | 8,000 |
Number of shares authorized for repurchase |  |  |  | 2,000,000
Shares available for repurchase under the plan | 1,951,000 |  |  |

X
- Definition Number of shares authorized to be issued under long-term incentive plan approved in 2012. + References No definition available. + Details
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Namespace Prefix: | kro_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of shares available for future award under 2012 plan. + References No definition available. + Details
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Namespace Prefix: | kro_
Data Type: | xbrli:sharesItemType
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X
- Definition Number of shares issued under 2012 long-term incentive compensation plan. + References No definition available. + Details
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Namespace Prefix: | kro_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_StockholdersEquityNoteAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration