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INCOME TAXES: (Tables) | 6 Months Ended
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Jun. 30, 2013
INCOME TAXES: |
Schedule of income tax provision and effective income tax rate | The income tax provision and the effective income tax rate for the first six months of 2013 and 2012 were as follows ($ in millions):
|  | 2013 |  | 2012 |
Income tax provision |  | $ | 401.8 |  | $ | 628.7 |
Effective income tax rate |  | 31.9 | % | 35.1 | %

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- Definition Disclosure of the income tax provision attributable to continuing operations and the effective income tax rate. + References No definition available. + Details
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- Details
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