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Deferred Revenue and Advances From Customers
12 Months Ended
Dec. 31, 2013
Deferred Revenue and Credits, Current [Abstract]  
Deferred Revenue and Advances From Customers
DEFERRED REVENUE AND ADVANCES FROM CUSTOMERS
 
December 31,
 
2013
 
2012
 
(millions)
Deferred revenue
$
195.9

 
$
123.1

Advances from customers

 
2.4

 
$
195.9

 
$
125.5

 
 
 
 
Deferred costs associated with deferred revenue
$
165.5

 
$
116.8