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Restructuring (Tables)
12 Months Ended
Dec. 31, 2012
Restructuring and Related Activities [Abstract]  
Schedule of Restructuring and Related Costs [Table Text Block]
A rollforward of the restructuring accrual is set forth below:

(in millions)
Employee
Separation
Contract Termination and Other Costs
Total
Balance at December 31, 2009
$
6.5

$
19.6

$
26.1

Restructuring charges
8.9

1.4

10.3

Payments
(12.8
)
(10.1
)
(22.9
)
Balance at December 31, 2010
$
2.6

$
10.9

$
13.5

Payments and other adjustments
(2.6
)
(6.5
)
(9.1
)
Balance at December 31, 2011
$

$
4.4

$
4.4

Payments and other adjustments

(3.9
)
(3.9
)
Balance at December 31, 2012
$

$
0.5

$
0.5