Quarterly report pursuant to Section 13 or 15(d)

Financing Agreements (Details)

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Financing Agreements (Details) (USD $)
In Millions, unless otherwise specified
Jun. 30, 2011
Sep. 30, 2010
Jun. 30, 2011
$400 revolving credit facility
Sep. 30, 2010
$400 revolving credit facility
Jun. 30, 2010
$400 revolving credit facility
Jun. 30, 2011
Swiss local credit facilities
Jun. 30, 2011
Other financing agreements
Jun. 30, 2011
$150 senior unsecured notes, due July 15, 2020, net of discount
Sep. 30, 2010
$150 senior unsecured notes, due July 15, 2020, net of discount
Jul. 09, 2010
$150 senior unsecured notes, due July 15, 2020, net of discount
Financing Agreements                    
Long-term debt $ 272.5 $ 403.4 $ 124.0 $ 255.0       $ 148.5 $ 148.4  
Maximum borrowing capacity available under the facility     400.0 400.0   21.3        
Letters of credit outstanding     6.7              
Remaining borrowing capacity available under the facility     269.3              
Weighted average interest rates (as a percent)     0.70%   0.70%          
Outstanding bank guarantees which reduce the amount of available borrowings           6.4        
Letters of credit and outstanding bank guarantees             3.9      
Debt issued                   150.0
Stated interest rate (as a percent)               5.50%    
Original issue discount                   1.6
Effective annual interest rate (as a percent)               5.65%    
Deferred financing costs                   $ 2.1