Quarterly report pursuant to Section 13 or 15(d)

Financing Agreements - Narrative (Details)

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Financing Agreements - Narrative (Details)
€ in Millions, $ in Millions
3 Months Ended 9 Months Ended
Dec. 15, 2014
USD ($)
Jun. 30, 2015
USD ($)
Jun. 30, 2014
USD ($)
Jun. 30, 2015
USD ($)
Jun. 30, 2014
USD ($)
Jun. 30, 2015
EUR (€)
Dec. 19, 2014
USD ($)
Sep. 30, 2014
USD ($)
Nov. 19, 2012
USD ($)
Debt instrument [Line Items]                  
Total debt   $ 530.3   $ 530.3       $ 558.5  
Redemption price, percentage 100.00%                
Debt covenant, business acquisition value threshold   75.0   $ 75.0          
Leverage holiday fee 0.75%                
Maximum ratio of Indebtedness to EBITDA allowed       3.5          
Minimum ratio of EBITDA to interest expense allowed       3.5          
Restricted cash and cash equivalent   0.7   $ 0.7       0.4  
$700 revolving credit facility, maturing December 19, 2019                  
Debt instrument [Line Items]                  
Total debt   105.8   105.8       229.6  
Line of credit facility, maximum borrowing capacity                 $ 700.0
Letters of credit outstanding, amount   15.8   15.8          
Line of credit facility, remaining borrowing capacity   578.4   578.4          
Line of credit facility, current borrowing capacity   $ 444.1   $ 444.1          
Weighted average interest rates   1.32% 1.32% 1.29% 1.35%        
Weighted average facility fee   0.23%   0.23%          
Term loan                  
Debt instrument [Line Items]                  
Total debt   $ 173.2   $ 173.2       180.0  
Debt instrument, face amount             $ 0.0    
Other financing agreements                  
Debt instrument [Line Items]                  
Line of credit facility, maximum borrowing capacity   222.1   222.1          
Line of credit facility, amount utilized for bank guarantees   153.4   153.4          
$100 unsecured Series A Notes, due December 15, 2024                  
Debt instrument [Line Items]                  
Total debt $ 100.0 100.0   100.0       $ 0.0  
Stated interest rate 4.60%                
Deferred financing costs $ 0.5                
Debt instrument, face amount   $ 100.0 $ 100.0 $ 100.0 $ 100.0        
Weighted average interest rates   1.56% 1.58% 1.55% 1.64%        
Syndicated credit facility                  
Debt instrument [Line Items]                  
Line of credit facility, maximum borrowing capacity | €           € 150.0      
Second JPM Amendment | $700 revolving credit facility, maturing December 19, 2019                  
Debt instrument [Line Items]                  
Deferred financing costs             1.7    
Original and First Amendment of JPM Credit Facility | $700 revolving credit facility, maturing December 19, 2019                  
Debt instrument [Line Items]                  
Deferred financing costs, existing             $ 2.0