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
Mar. 31, 2012
Sep. 30, 2011
Mar. 31, 2012
$400 revolving credit facility (excludes outstanding letters of credit)
Sep. 30, 2011
$400 revolving credit facility (excludes outstanding letters of credit)
Mar. 31, 2011
$400 revolving credit facility (excludes outstanding letters of credit)
Mar. 31, 2012
Swiss local credit facilities
Mar. 31, 2012
$150 senior unsecured notes, due July 15, 2020, net of discount
Sep. 30, 2011
$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
Mar. 31, 2012
Other financing agreements
Financing Agreements                    
Less current $ (199.0)                  
Long-term debt 148.6 431.5 199.0 283.0     148.6 148.5    
Letters of credit outstanding     6.7              
Remaining borrowing capacity available under the credit facility     194.3              
Weighted average interest rates (as a percent)     0.70%   0.70%          
Maximum borrowing capacity available under the facility     400.0 400.0   19.4        
Outstanding bank guarantees which reduce the amount of available borrowings           7.5        
Letters of credit and outstanding bank guarantees                   9.3
Debt issued             150.0   150.0  
Stated interest rate commencing on January 15, 2011 (as a percent)             5.50%      
Original issue discount                 1.6  
Effective annual interest rate (as a percent)             5.65%      
Deferred financing costs                 2.1  
Restricted cash                   $ 1.3