XML 126 R108.htm IDEA: XBRL DOCUMENT v3.20.4
Debt (Narrative) (Details)
12 Months Ended
Sep. 30, 2019
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Sep. 30, 2020
USD ($)
Debt Instrument [Line Items]        
Bank, legal and other fees $ 3,000,000.0      
Amount capitalized and recorded as a component of long-term debt 2,900,000      
Unamortized debt financing costs wrote off 2,700,000   $ 2,700,000  
Interest Rate Swap Contracts [Member]        
Debt Instrument [Line Items]        
Notional interest rate swap settled $ 100,000,000.0      
Letter of Credit [Member]        
Debt Instrument [Line Items]        
Credit facility amount   $ 10,900,000    
Line of credit availability   175,000,000.0    
Term Loan A [Member]        
Debt Instrument [Line Items]        
Line of credit availability   $ 500,000,000.0    
Maturity date   Sep. 30, 2024    
Term Loan A [Member] | LIBOR        
Debt Instrument [Line Items]        
Interest rate   1.50%    
Bi-lateral Facility [Member] | Letter of Credit [Member]        
Debt Instrument [Line Items]        
Credit facility amount   $ 10,900,000    
Line of credit availability   25,000,000.0    
Revolving Credit Facility [Member]        
Debt Instrument [Line Items]        
Line of credit availability   $ 500,000,000.0    
Maturity date   Sep. 30, 2024    
Revolving Credit Facility [Member] | LIBOR        
Debt Instrument [Line Items]        
Interest rate   1.50%    
Revolving Credit Facility [Member] | Letter of Credit [Member]        
Debt Instrument [Line Items]        
Line of credit availability   $ 150,000,000.0    
Refinanced Senior Credit Facility [Member]        
Debt Instrument [Line Items]        
Financial covenants   The senior credit facility includes two financial covenants that require the ratio of consolidated EBITDA to consolidated cash interest expense minus cash consolidated interest income to be greater than or equal to 3.0 to 1.0 and requires the ratio of consolidated funded indebtedness, minus AWI and domestic subsidiary unrestricted cash and cash equivalents up to $100 million, to EBITDA to be less than or equal to 3.75 to 1.0.    
Maximum unrestricted cash and cash equivalents for leverage ratio calculation   $ 100,000,000    
Refinanced Senior Credit Facility [Member] | Minimum [Member]        
Debt Instrument [Line Items]        
Ratio of EBITDA to consolidated cash interest expense minus cash consolidated interest income   3.0    
Refinanced Senior Credit Facility [Member] | Maximum [Member]        
Debt Instrument [Line Items]        
Ratio of consolidated funded indebtedness, minus unrestricted cash and cash equivalents   3.75    
Securitization Facility [Member]        
Debt Instrument [Line Items]        
Maturity date   Sep. 30, 2020    
Line of credit facility amount repaid       $ 30,000,000.0
Securitization Facility [Member] | ARC [Member]        
Debt Instrument [Line Items]        
Ownership interest   100.00%    
Senior Credit Facility [Member]        
Debt Instrument [Line Items]        
Credit facility amount   $ 1,000,000,000.0