Annual report pursuant to Section 13 and 15(d)

Financing Agreements (Details)

v3.5.0.2
Financing Agreements (Details)
€ in Millions
12 Months Ended
Dec. 19, 2014
USD ($)
Dec. 15, 2014
USD ($)
Jul. 09, 2010
USD ($)
Sep. 30, 2016
USD ($)
Sep. 30, 2015
USD ($)
Sep. 30, 2016
EUR (€)
Mar. 24, 2016
USD ($)
Jun. 03, 2013
EUR (€)
Long-term Debt                
Total debt       $ 610,100,000 $ 528,100,000      
Less: current portion       13,800,000 9,400,000      
Total long-term debt       596,300,000 518,700,000      
Maturities of long-term debt                
2016       13,500,000        
2017       18,000,000        
2018       18,000,000        
2019       461,000,000        
2020       $ 0        
Stated interest rate       5.50%   5.50%    
$700 revolving credit facility                
Long-term Debt                
Total debt       $ 198,500,000 $ 107,600,000      
Maturities of long-term debt                
Maximum borrowing capacity available under the facility $ 700,000,000.0              
Debt covenant, business acquisition value threshold 75,000,000              
Deferred financing costs 1,000,000     2,000,000        
Accordion option to increase commitments under the unsecured revolving credit facility 300,000,000.0              
Letters of credit outstanding       9,500,000        
Remaining borrowing capacity available under the credit facility       492,000,000        
Current borrowing capacity available under the facility       $ 359,600,000        
Weighted average interest rates (as a percent)       1.48% 1.29%      
Weighted average facility fee (as a percent)       0.21% 0.22%      
$700 revolving credit facility | Maximum                
Maturities of long-term debt                
Ratio of indebtedness to EBITDA       3.5        
$700 revolving credit facility | Minimum                
Maturities of long-term debt                
Ratio of Debt to interest expense       3.5        
$180 term loan                
Long-term Debt                
Total debt       $ 162,000,000 $ 171,000,000      
Maturities of long-term debt                
Debt issued $ 180,000,000              
Percentage of principal which will be repaid over the term of debt 38.00%              
Term of debt instrument 5 years              
Weighted average interest rates (as a percent)       1.76% 1.54%      
$150 senior unsecured notes                
Long-term Debt                
Total debt       $ 149,300,000 $ 149,100,000      
Total long-term debt     $ 148,400,000          
Maturities of long-term debt                
Debt issued     150,000,000 $ 150,000,000        
Deferred financing costs     $ 2,100,000          
Term of debt instrument       10 years        
Stated interest rate     5.50% 5.50%   5.50%    
Notes issued at a discount     $ 1,600,000          
Effective annual interest rate (as a percent)     5.65%          
Percentage of the principal amount at which the notes are redeemable due to a change of control     101.00%          
$100 Series A Notes                
Long-term Debt                
Total debt       $ 100,000,000 100,000,000      
Maturities of long-term debt                
Debt issued   $ 100,000,000.0            
Deferred financing costs   400,000            
Private Shelf Facility, Accordion Feature, Maximum   $ 150.0         $ 200.0  
Stated interest rate   4.60%            
Redemption price, percentage   100.00%            
Leverage holiday fee   0.75%            
Other                
Long-term Debt                
Total debt       300,000 400,000      
Syndicated Credit Facility                
Maturities of long-term debt                
Maximum borrowing capacity available under the facility | €               € 150.0
Deferred financing costs       $ 1,300,000        
Increase in financing capacity, exercise of accordion feature | €           € 70.0    
Charges for unused capacity (as a percent)       35.00%        
Applicable guarantee rate (as a percent)       0.90%   0.90%    
Borrowings under facilities       $ 0        
Other Financing Agreements                
Maturities of long-term debt                
Maximum borrowing capacity available under the facility       212,600,000        
Amount of credit facility utilized for providing bank guarantees       111,700,000        
Restricted cash       $ 800,000 $ 800,000