Debt (Tables)
 3 Months Ended
Mar. 31, 2015
Debt Disclosure [Abstract]  
Outstanding Debt Balances
Outstanding debt balances were as follows:
 
 
March 31, 2015
 
December 31, 2014
Notes payable
 
 
 
 
Uncommitted lines of credit
 
$
44.0

 
$
24.8

Other
 
0.7

 
0.8

 
 
$
44.7

 
$
25.6

Long-term debt
 
 
 
 
Credit facility
 
$
295.0

 
$
240.0

Senior notes
 
225.0

 
225.0

Industrial development revenue bonds
 
11.9

 
11.9

Other
 
2.8

 
2.9

 
 
$
534.7

 
$
479.8