Retirement Plans (Schedule Of Weighted-Average Assumptions Used In Valuations Of Pension Benefits) (Details)	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Assumption used to determine net pension expense service cost, Discount rate	4.33%	3.95%	3.75%
Assumption used to determine net pension expense interest cost, Discount rate	3.98%	3.25%	2.90%
Assumptions used to determine net pension expense, Expected return on plan assets	7.00%	7.00%	7.25%
Assumptions used to determine net pension expense, Rate of compensation increase	3.25%	3.25%	3.25%
Assumptions used to determine benefit obligations, Discount rate	3.22%	4.26%	3.76%
Assumptions used to determine benefit obligations, Rate of compensation increase	3.25%	3.25%	3.25%
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Assumption used to determine net pension expense service cost, Discount rate	2.70%	2.60%	2.30%
Assumption used to determine net pension expense interest cost, Discount rate	2.70%	2.60%	2.30%
Assumptions used to determine net pension expense, Expected return on plan assets	6.10%	5.70%	6.20%
Assumptions used to determine net pension expense, Rate of compensation increase	3.50%	3.40%	3.20%
Assumptions used to determine benefit obligations, Discount rate	1.90%	2.70%	2.60%
Assumptions used to determine benefit obligations, Rate of compensation increase	3.70%	3.50%	3.40%