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Income Taxes Summary of Valuation Allowance (Tables)
 12 Months Ended
Dec. 31, 2015
Summary of Other Intangible Assets [Abstract]  
Summary of Valuation Allowance [Table Text Block]
The change in the valuation allowance is listed below.
 
Years ended December 31,
 
2015
 
2014
 
2013
Balance at beginning of period
$
332.2

 
$
467.3

 
$
392.9

(Reversed) charged to costs and expenses
(20.8
)
 
(72.8
)
 
65.2

(Reversed) charged to gross tax assets and other accounts
(36.3
)
 
(62.3
)
 
9.2

Balance at end of period
$
275.1

 
$
332.2

 
$
467.3