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Pension and Postretirement Plans
 9 Months Ended
Jun. 30, 2021
Retirement Benefits [Abstract]  
Pension and Postretirement Plans Pension and Postretirement Plans
The components of the Company’s net periodic benefit costs from continuing operations associated with its defined benefit pension and postretirement plans, which are primarily recorded in selling, general and administrative expenses in the consolidated statements of income, are shown in the tables below in accordance with ASC 715, "Compensation – Retirement Benefits" (in millions):
 U.S. Pension Plans
Three Months Ended
June 30,		Nine Months Ended
June 30,
 2021202020212020
Interest cost$14 $18 $36 $55 
Expected return on plan assets(42)(46)(126)(136)
Net actuarial loss (gain)(49)157 (252)157 
Settlement loss (gain)(1)6 (5)6 
Net periodic benefit cost (credit)$(78)$135 $(347)$82 

 Non-U.S. Pension Plans
Three Months Ended
June 30,		Nine Months Ended
June 30,
 2021202020212020
Service cost$7 $6 $20 $19 
Interest cost8 9 24 27 
Expected return on plan assets(29)(27)(84)(83)
Amortization of prior service cost1 — 1 1 
Net periodic benefit credit$(13)$(12)$(39)$(36)
 Postretirement Benefits
Three Months Ended
June 30,		Nine Months Ended
June 30,
 2021202020212020
Service cost$— $1 $1 $1 
Interest cost— 1 1 3 
Expected return on plan assets(2)(3)(6)(7)
Amortization of prior service credit(1)— (3)(1)
Net periodic benefit credit$(3)$(1)$(7)$(4)

During the second quarter of fiscal 2021, the amount of cumulative fiscal 2021 lump sum payouts triggered a remeasurement event for certain U.S. pension plans. During the three months ended June 30, 2021, the Company recognized net actuarial gains of $49 million, primarily due to favorable plan asset performance, partially offset by a decrease in discount rates. During the nine months ended June 30, 2021, the Company recognized the net actuarial gains of $252 million, primarily due to an increase in discount rates and favorable plan asset performance.

During the three months ended June 30, 2020, the amount of cumulative fiscal 2020 lump sum payouts triggered a remeasurement event for certain U.S. pension plans resulting in the recognition of net actuarial losses of $157 million, primarily due to a decrease in discount rates.