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SHAREHOLDER'S EQUITY (TABLES)
12 Months Ended
Dec. 31, 2011
Equity [Abstract]  
Schedule of Treasury Stock by Class [Table Text Block]
Share repurchase activity as of December 31 (in millions, except shares):
 
2011
 
2010
 
2009
 
Shares
 
Amount
 
Shares
 
Amount
 
Shares
 
Amount
2011 Repurchase Program
797,500

 
$
48.3

 

 
$

 

 
$

2010 Repurchase Program
511,800

 
31.2

 
355,000

 
18.8

 

 

2009 Repurchase Program

 

 
645,748

 
26.3

 
1,324,578

 
23.8

 
1,309,300

 
$
79.5

 
1,000,748

 
$
45.1

 
1,324,578

 
$
23.8

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
AOCL consisted of the following at December 31 (in millions, net of tax):  
 
2011
 
2010
Unrealized gain on marketable securities considered available-for-sale
$
(5.7
)
 
$
(8.0
)
Related to pension plans
381.0

 
255.4

Related to postretirement medical benefits
(1.0
)
 
14.3

Related to interest rate derivatives
15.7

 
5.5

 
$
390.0

 
$
267.2