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Debt and Other Obligations - Additional Information (Detail)
1 Months Ended 3 Months Ended 12 Months Ended
Aug. 31, 2021
USD ($)
Option
Jun. 30, 2019
USD ($)
Sep. 30, 2016
USD ($)
Jul. 31, 2012
USD ($)
Mar. 31, 2021
USD ($)
Sep. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
May 31, 2019
EUR (€)
Debt Instrument [Line Items]                
Revolving credit facility, committed amount           $ 1,000,000,000    
Revolving credit facility, cap amount used to calculate net debt           150,000,000    
Long-term debt           1,061,000,000    
Unsecured medium term notes outstanding issued           $ 23,000,000 $ 23,000,000  
Maturity of the total outstanding medium term notes, years           3 years    
Weighted average interest of medium term notes           7.96%    
Short-term borrowings           $ 72,000,000 14,000,000  
Commercial Paper [Member]                
Debt Instrument [Line Items]                
Short-term borrowings           $ 71,000,000 $ 14,000,000  
Weighted-average interest rate           0.15% 0.28%  
Chinese Renminbi Debt [Member]                
Debt Instrument [Line Items]                
Long-term debt           $ 4,000,000 $ 4,000,000  
3.7% Notes due fiscal 2022 [Member]                
Debt Instrument [Line Items]                
Debt maturity date           Jul. 15, 2022    
Debt instrument, interest rate           3.70% 3.70%  
Registered unsecured notes issued       $ 350,000,000        
Debt instrument, discount       $ 1,000,000        
Proceeds from issuance of unsecured notes           $ 347,000,000    
Debt instrument due, year           2022 2022  
3.7% Notes due fiscal 2022 [Member] | Fixed Rate Debt [Member]                
Debt Instrument [Line Items]                
Debt instrument, interest rate       3.70%        
Debt instrument due, year           2022    
3.4% Notes due fiscal 2026 [Member]                
Debt Instrument [Line Items]                
Debt maturity date           Sep. 15, 2026    
Debt instrument, interest rate           3.40% 3.40%  
Registered unsecured notes issued     $ 250,000,000          
Debt instrument, discount     $ 1,000,000          
Proceeds from issuance of unsecured notes           $ 248,000,000    
Debt instrument due, year           2026 2026  
3.4% Notes due fiscal 2026 [Member] | Fixed Rate Debt [Member]                
Debt Instrument [Line Items]                
Debt instrument, interest rate     3.40%          
Debt instrument due, year           2026    
4.0% Notes due 2029 [Member]                
Debt Instrument [Line Items]                
Debt issuance cost   $ 3,000,000            
Debt maturity date   Jul. 01, 2029            
Debt instrument, interest rate   4.00%       4.00% 4.00%  
Registered unsecured notes issued   $ 300,000,000            
Debt instrument, discount   1,000,000            
Proceeds from issuance of unsecured notes   $ 296,000,000            
Debt instrument due, year   2029       2029 2029  
Maximum [Member]                
Debt Instrument [Line Items]                
Debt instrument, covenant, ratio of consolidated total debt to consolidated EBITDA           350.00%    
Minimum [Member]                
Debt Instrument [Line Items]                
Debt instrument, covenant, ratio of consolidated total debt to consolidated EBITDA           100.00%    
Revolving Credit Facility, expires fiscal 2026 [Member]                
Debt Instrument [Line Items]                
Amount available under credit facility           $ 929,000,000    
Revolving credit facility, weighted average interest rate           1.24%    
Revolving credit facility, committed amount $ 1,000,000,000              
Debt instrument, maturity date Aug. 06, 2026              
Revolving credit facility, number of options to extend | Option 2              
Revolving credit facility, options extension period 1 year              
Revolving Credit Facility - Euro, expires fiscal 2024 [Member]                
Debt Instrument [Line Items]                
Revolving credit facility, weighted average interest rate           1.20%    
Revolving credit facility, committed amount | €               € 300,000,000
Debt instrument, maturity date           May 22, 2024    
Credit agreement, available borrowing           $ 216,000,000    
Debt issuance cost           $ 1,000,000    
Debt instrument due, year           2024 2024  
Revolving Credit Facility - Canada, expires fiscal 2021 [Member]                
Debt Instrument [Line Items]                
Debt instrument, maturity date         Sep. 24, 2021      
Unsecured revolving credit agreement terminated         $ 100,000,000      
Borrowings under revolving credit agreement           $ 0 $ 0  
European Credit Facility [Member] | Maximum [Member]                
Debt Instrument [Line Items]                
Debt instrument, covenant, ratio of consolidated total debt to consolidated EBITDA           350.00%    
European Credit Facility [Member] | Minimum [Member]                
Debt Instrument [Line Items]                
Debt instrument, covenant, ratio of consolidated total debt to consolidated EBITDA           100.00%    
Standby Letters of Credit [Member]                
Debt Instrument [Line Items]                
Debt instrument due, year           2022    
Standby letters of credit, outstanding amount           $ 5,000,000