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Income Taxes (Tables) | 9 Months Ended
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Sep. 30, 2016
Income Tax Disclosure [Abstract] |
Component of Income Taxes |
| Three months ended |  |  | Nine months ended |
| September 30, |  |  | September 30, |
| 2015 |  |  | 2016 |  |  | 2015 |  |  | 2016 |
| (In millions) |
Expected tax expense (benefit), at U.S. federal statutory income tax rate of 35% | $ | (.8 | ) |  | $ | 2.5 |  |  | $ | (15.0 | ) |  | $ | 2.0 |
Rate differences on equity in earnings (losses) of Kronos |  | (2.7 | ) |  |  | (3.0 | ) |  |  | (7.4 | ) |  |  | (2.8 | )
Adjustment to the reserve for uncertain tax positions, net |  | — |  |  |  | — |  |  |  | (3.0 | ) |  |  | — |
Nontaxable income |  | (.1 | ) |  |  | (.2 | ) |  |  | (.3 | ) |  |  | (.4 | )
U.S. state income taxes and other, net |  | .1 |  |  |  | .1 |  |  |  | .2 |  |  |  | .1 |
Income tax expense (benefit) | $ | (3.5 | ) |  | $ | (.6 | ) |  | $ | (25.5 | ) |  | $ | (1.1 | )
Comprehensive provision for income taxes (benefit) allocable to: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) | $ | (3.5 | ) |  | $ | (.6 | ) |  | $ | (25.5 | ) |  | $ | (1.1 | )
Other comprehensive income (loss): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Marketable securities |  | (18.6 | ) |  |  | 3.7 |  |  |  | (22.4 | ) |  |  | 4.9 |
Currency translation |  | (2.0 | ) |  |  | 1.0 |  |  |  | (8.3 | ) |  |  | 2.0 |
Interest rate swap |  | (.4 | ) |  |  | .1 |  |  |  | (.4 | ) |  |  | (.3 | )
Pension plans |  | .5 |  |  |  | .4 |  |  |  | 1.5 |  |  |  | 1.3 |
OPEB plans |  | — |  |  |  | (.1 | ) |  |  | (.2 | ) |  |  | (.2 | )
Total | $ | (24.0 | ) |  | $ | 4.5 |  |  | $ | (55.3 | ) |  | $ | 6.6 |

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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32687-109319 + Details
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