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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parentheticals) (USD $) In Millions, unless otherwise specified | 3 Months Ended
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Mar. 31, 2013 | Mar. 31, 2012
Statement Of Other Comprehensive Income [Abstract] |  |
Income tax benefit (expense) | $ 2.8 | $ 0.7
Income tax benefit (expense) | $ (0.2) | $ (2.4)

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