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Schedule II - VALUATION AND QUALIFYING ACCOUNTS (Tables)
 12 Months Ended
Dec. 31, 2012
Valuation and Qualifying Accounts [Abstract]  
Valuation and Qualifying Accounts
VALUATION AND QUALIFYING ACCOUNTS
Years Ended December 31, 2012, 2011 and 2010
Allowance for Doubtful Accounts Deducted from Trade Receivables
 
Balance at
Beginning
of Year
 
Additions (a)
 
Deductions (b)
 
Balance
at End
of Year
 
 
(in millions)
2012
 
$
31.9

 
$
1.0

 
$
(4.6
)
 
$
28.3

2011
 
29.0

 
7.2

 
(4.3
)
 
31.9

2010
 
30.3

 
5.3

 
(6.6
)
 
29.0

 —————————— 
(a)
Provision charged to earnings.
(b)
Accounts written off, net of recoveries.