XML 58 R51.htm IDEA: XBRL DOCUMENT v3.25.1
Income Taxes - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Income Taxes [Line Items]    
Effective tax rate (ETR) from continuing operations 1.50% (1.50%)
State net operating loss carryforwards $ 1.2  
Domestic Tax Authority [Member] | 2030-2038 [Member]    
Income Taxes [Line Items]    
Net operating loss carryforwards 371.7  
State and Local Jurisdiction [Member] | 2024-2043 [Member]    
Income Taxes [Line Items]    
Net operating loss carryforwards $ 176.1  
Minimum [Member] | Domestic Tax Authority [Member]    
Income Taxes [Line Items]    
Operating loss carryforwards, expiration year 2030  
Minimum [Member] | State and Local Jurisdiction [Member]    
Income Taxes [Line Items]    
Operating loss carryforwards, expiration year 2024  
Maximum [Member] | Domestic Tax Authority [Member]    
Income Taxes [Line Items]    
Operating loss carryforwards, expiration year 2038  
Maximum [Member] | State and Local Jurisdiction [Member]    
Income Taxes [Line Items]    
Operating loss carryforwards, expiration year 2043