Annual report pursuant to Section 13 and 15(d)

Financing Agreements Financing Agreements - Schedule of borrowings (Details)

v3.21.2
Financing Agreements Financing Agreements - Schedule of borrowings (Details) - USD ($)
Sep. 30, 2021
Mar. 03, 2021
Sep. 30, 2020
Jun. 16, 2020
Sep. 25, 2019
Dec. 15, 2014
Debt Instrument [Line Items]            
Total debt $ 1,212,900,000   $ 1,552,600,000      
Less: current portion 0   (36,300,000)      
Long-term debt 1,212,900,000   1,516,300,000      
$400.0 senior unsecured notes            
Debt Instrument [Line Items]            
Debt issued 400.0     $ 400,000,000.0    
Term loans | $500.0 Term Loan            
Debt Instrument [Line Items]            
Total debt 0   473,700,000      
Unamortized debt issuance costs 1,300,000          
Term loans | $225.0 Term Loan            
Debt Instrument [Line Items]            
Total debt 0   213,400,000      
Unamortized debt issuance costs 4,200,000          
Senior unsecured notes            
Debt Instrument [Line Items]            
Debt issued 375,000,000.0       $ 375,000,000.0  
Senior unsecured notes | $400.0 senior unsecured notes            
Debt Instrument [Line Items]            
Total debt 395,800,000   394,800,000      
Unamortized debt issuance costs 4,200,000   5,200,000      
Senior unsecured notes | $375.0 senior unsecured notes            
Debt Instrument [Line Items]            
Debt issued         375,000,000.0  
Total debt 371,500,000   370,800,000   $ 374,400,000  
Unamortized debt issuance costs 3,100,000   3,700,000      
Senior unsecured notes | $150.0 senior unsecured notes            
Debt Instrument [Line Items]            
Unamortized debt issuance costs 300,000          
$100.0 Series A Notes            
Debt Instrument [Line Items]            
Debt issued           $ 100,000,000.0
Total debt 99,800,000   99,700,000      
Unamortized debt issuance costs 200,000   300,000      
$900.0 revolving credit facility (excluding outstanding letters of credit)            
Debt Instrument [Line Items]            
Total debt 0   0      
Other            
Debt Instrument [Line Items]            
Total debt 0   200,000      
350 Million Senior Unsecured Notes            
Debt Instrument [Line Items]            
Debt issued   $ 350,000,000.0        
Total debt $ 345,800,000   $ 0