XML 124 R105.htm IDEA: XBRL DOCUMENT v3.22.2.2
Retirement Plans - Accumulated Benefit Obligations and Reconciliations of Changes in Projected Benefit Obligation, Changes in Plan Assets and Funded Status (Details) - USD ($)
$ in Millions
 12 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2020
Pension Plan | United States      
Retirement Plans [Line Items]      
Accumulated Benefit Obligation $ 1,822 $ 2,629  
Change in Projected Benefit Obligation      
Projected benefit obligation at beginning of year 2,629 3,217  
Service cost 0 0 $ 0
Interest cost 56 47 67
Plan participant contributions 0 0  
Actuarial gain (587) (52)  
Amendments made during the year 0 0  
Benefits and settlements paid (276) (583)  
Curtailment 0 0  
Other 0 0  
Currency translation adjustment 0 0  
Projected benefit obligation at end of year 1,822 2,629 3,217
Change in Plan Assets      
Fair value of plan assets at beginning of year 2,459 2,706  
Actual return on plan assets (454) 333  
Employer and employee contributions 1 3  
Benefits paid (85) (108)  
Settlement payments (191) (475)  
Other 0 0  
Currency translation adjustment 0 0  
Fair value of plan assets at end of year 1,730 2,459 2,706
Funded status (92) (170)  
Prepaid benefit cost 37 44  
Accrued benefit liability (129) (214)  
Net amount recognized $ (92) $ (170)  
Weighted Average Assumptions      
Discount rate 5.08% 2.50%  
Pension Plan | Foreign Plan      
Retirement Plans [Line Items]      
Accumulated Benefit Obligation $ 1,417 $ 2,540  
Change in Projected Benefit Obligation      
Projected benefit obligation at beginning of year 2,625 2,726  
Service cost 20 27 25
Interest cost 39 32 36
Plan participant contributions 2 3  
Actuarial gain (651) (103)  
Amendments made during the year (1) (6)  
Benefits and settlements paid (166) (124)  
Curtailment 0 (3)  
Other (2) (2)  
Currency translation adjustment (395) 75  
Projected benefit obligation at end of year 1,471 2,625 2,726
Change in Plan Assets      
Fair value of plan assets at beginning of year 2,344 2,213  
Actual return on plan assets (459) 125  
Employer and employee contributions 94 65  
Benefits paid (74) (79)  
Settlement payments (92) (45)  
Other (2) (1)  
Currency translation adjustment (378) 66  
Fair value of plan assets at end of year 1,433 2,344 2,213
Funded status (38) (281)  
Prepaid benefit cost 151 79  
Accrued benefit liability (189) (360)  
Net amount recognized $ (38) $ (281)  
Weighted Average Assumptions      
Discount rate 4.36% 1.80%  
Rate of compensation increase 3.00% 2.85%  
Interest crediting rate 1.69% 1.45%  
Postretirement Benefits      
Retirement Plans [Line Items]      
Accumulated Benefit Obligation $ 89 $ 0  
Change in Projected Benefit Obligation      
Projected benefit obligation at beginning of year 123 146  
Service cost 1 1 1
Interest cost 2 2 4
Plan participant contributions 3 3  
Actuarial gain (25) (13)  
Amendments made during the year 0 0  
Benefits and settlements paid (14) (17)  
Curtailment 0 0  
Other 0 0  
Currency translation adjustment (1) 1  
Projected benefit obligation at end of year 89 123 146
Change in Plan Assets      
Fair value of plan assets at beginning of year 172 153  
Actual return on plan assets (20) 30  
Employer and employee contributions 6 6  
Benefits paid (14) (17)  
Settlement payments 0 0  
Other 0 0  
Currency translation adjustment 0 0  
Fair value of plan assets at end of year 144 172 $ 153
Funded status 55 49  
Prepaid benefit cost 95 107  
Accrued benefit liability (40) (58)  
Net amount recognized $ 55 $ 49  
Weighted Average Assumptions      
Discount rate 4.92% 2.30%