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Accumulated Other Comprehensive Loss (Notes)
 12 Months Ended
Dec. 31, 2011
Accumulated Other Comprehensive Loss, net of tax [Abstract]  
Accumulated Other Comprehensive Loss, net of tax
Comprehensive Loss, net of tax
The components of accumulated other comprehensive loss, net of tax are listed below.
 
December 31,
 
2011
 
2010
 
2009
Foreign currency translation adjustment
$
(140.9
)
 
$
(51.3
)
 
$
(85.3
)
Unrecognized losses, transition obligation and prior service cost
(85.0
)
 
(67.7
)
 
(90.9
)
Net unrealized holding gains (losses) on securities
0.2

 
0.0

 
(0.4
)
    Accumulated other comprehensive loss, net of tax
$
(225.7
)
 
$
(119.0
)
 
$
(176.6
)