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Income taxes (Tables) | 3 Months Ended
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Mar. 31, 2013
Income Tax Disclosure [Abstract] |
Component of Income Taxes Expenses |
|  | Three months ended March 31, |
|  | 2012 |  |  | 2013 |
|  | (In millions) |
Expected tax expense (benefit), at U.S. federal statutory income tax rate of 35% |  | $ | 62.2 |  |  | $ | (24.5 | )
Incremental tax on earnings of non-U.S. companies |  |  | 4.0 |  |  |  | (1.4 | )
Non-U.S. tax rates |  |  | (7.7 | ) |  |  | (.4 | )
Adjustment to the reserve for uncertain tax positions, net |  |  | .5 |  |  |  | 2.0 |
Nondeductible expenses |  |  | .6 |  |  |  | 2.5 |
U.S. state income taxes and other, net |  |  | (.6 | ) |  |  | — |
Income tax expense (benefit) |  | $ | 59.0 |  |  | $ | (21.8 | )
|  | Three months ended March 31, |
|  | 2012 |  |  | 2013 |
|  | (In millions) |
Comprehensive provision for income taxes (benefit) allocable to: |  |  |  |  |  |  |  |
Continuing operations |  | $ | 59.0 |  |  | $ | (21.8 | )
Discontinued operations |  |  | .6 |  |  |  | — |
Other comprehensive income (loss): |  |  |  |  |  |  |  |
Marketable securities |  |  | (5.6 | ) |  |  | 3.6 |
Currency translation |  |  | — |  |  |  | (3.8 | )
Pension plans |  |  | .8 |  |  |  | 1.2 |
OPEB plans |  |  | (.2 | ) |  |  | (.2 | )
Total |  | $ | 54.6 |  |  | $ | (21.0 | )

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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=6907707&loc=d3e32687-109319 + Details
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