Quarterly report pursuant to Section 13 or 15(d)

Financing Agreements - Schedule of borrowings (Details)

v3.20.2
Financing Agreements - Schedule of borrowings (Details) - USD ($)
$ in Millions
Jun. 30, 2020
Sep. 30, 2019
Debt Instrument [Line Items]    
Debt Issuance Costs, Line of Credit Arrangements, Gross $ 2.0  
Total debt 1,711.1 $ 619.5
Other 0.2 0.0
Current portion of long-term debt 36.3 0.0
Long-term debt 1,674.8 619.5
$500.0 term loan (1)    
Debt Instrument [Line Items]    
Debt Issuance Costs, Line of Credit Arrangements, Gross 1.4  
Total debt 479.9 0.0
$400.0 senior unsecured notes (2)    
Debt Instrument [Line Items]    
Debt Issuance Costs, Line of Credit Arrangements, Gross 5.5  
Total debt 394.5 0.0
$150.0 senior unsecured notes, net of discount (5)    
Debt Instrument [Line Items]    
Debt Issuance Costs, Line of Credit Arrangements, Gross 3.9 4.3
Total debt 370.6 370.1
$225.0 term loan (4)    
Debt Instrument [Line Items]    
Debt Issuance Costs, Line of Credit Arrangements, Gross 0.4  
Total debt 216.2 0.0
$150.0 senior unsecured notes, net of discount (5)    
Debt Instrument [Line Items]    
Debt Issuance Costs, Line of Credit Arrangements, Gross   0.2
Total debt 150.0 149.7
$100.0 Series A Notes (6)    
Debt Instrument [Line Items]    
Debt Issuance Costs, Line of Credit Arrangements, Gross 0.3  
Total debt 99.7 99.7
$900.0 revolving credit facility (excluding outstanding letters of credit)    
Debt Instrument [Line Items]    
Total debt $ 0.0 $ 0.0