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Employee Benefit Plans (Tables)
 3 Months Ended
Mar. 31, 2013
General Discussion of Pension and Other Postretirement Benefits [Abstract]  
Components of Net Periodic Benefit Cost
 
 
Three Months Ended March 31,
 
 
Pension Benefits
 
 
 
 
Net Periodic Benefit Costs
 
U.S. Plans
 
Non-U.S. Plans
 
Postretirement Benefits
 
 
2013
 
2012
 
2013
 
2012
 
2013
 
2012
Service cost
 
$
5.0

 
$
3.8

 
$
4.8

 
$
4.5

 
$
.5

 
$
.5

Interest cost
 
6.6

 
7.4

 
9.1

 
9.8

 
1.4

 
1.5

Expected return on plan assets
 
(9.4
)
 
(9.2
)
 
(9.8
)
 
(9.8
)
 
—

 
—

Amortization of prior service credit
 
(.1
)
 
(.1
)
 
(.3
)
 
(.4
)
 
(1.2
)
 
(3.3
)
Amortization of net actuarial losses
 
11.3

 
11.8

 
4.6

 
4.4

 
.8

 
1.0

Net periodic benefit costs
 
$
13.4

 
$
13.7

 
$
8.4

 
$
8.5

 
$
1.5

 
$
(.3
)