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Employee Benefit Plans - Additional Information (Details)
$ in Millions
3 Months Ended 6 Months Ended
Mar. 31, 2022
USD ($)
Mar. 31, 2021
USD ($)
Mar. 31, 2022
USD ($)
Employee
Mar. 31, 2021
USD ($)
Defined Benefit Plan Disclosure [Line Items]        
Number of employees transferred upon divestiture | Employee     40  
Actuarial gain $ 1 $ 0 $ 1 $ 0
Foreign Pension Plans, Defined Benefit [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Actual contributions to benefit plans in period     3  
Estimated future contributions in current fiscal year 2   2  
United States Pension Plans of US Entity, Defined Benefit [Member] | Maximum [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Actual contributions to benefit plans in period     1  
Estimated future contributions in current fiscal year $ 1   $ 1