XML 88 R79.htm IDEA: XBRL DOCUMENT v3.22.2
Income Taxes - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Minimum [Member]        
Income Tax Contingency [Line Items]        
Decrease in unrecognized tax benefits is reasonably possible $ 6   $ 6  
Maximum [Member]        
Income Tax Contingency [Line Items]        
Decrease in unrecognized tax benefits is reasonably possible $ 16   $ 16  
Current Fiscal Year [Member]        
Income Tax Contingency [Line Items]        
Effective tax rate (in hundredths) 2.00%   17.00%  
Tax reform (benefit) and expense $ 1   $ 3  
Prior Fiscal Year [Member]        
Income Tax Contingency [Line Items]        
Effective tax rate (in hundredths)   (57.00%)   (34.00%)
Tax reform (benefit) and expense   $ (33)   $ (52)