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Retirement Plans (Schedule Of Asset Allocations And Weighted-Average Target Allocations) (Details) | 12 Months Ended |
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Sep. 30, 2021 | Sep. 30, 2020
U.S. Plans |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, actual plan asset allocations | 100.00% | 100.00%
Total, target | 100.00% |
U.S. Plans | Equity Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, actual plan asset allocations | 39.00% | 49.00%
U.S. Plans | Debt Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, actual plan asset allocations | 55.00% | 45.00%
U.S. Plans | Other Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, actual plan asset allocations | 6.00% | 6.00%
U.S. Plans | Minimum [Member] | Equity Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, target plan asset allocations | 35.00% |
U.S. Plans | Minimum [Member] | Debt Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, target plan asset allocations | 50.00% |
U.S. Plans | Minimum [Member] | Other Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, target plan asset allocations | 0.00% |
U.S. Plans | Maximum [Member] | Equity Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, target plan asset allocations | 45.00% |
U.S. Plans | Maximum [Member] | Debt Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, target plan asset allocations | 60.00% |
U.S. Plans | Maximum [Member] | Other Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, target plan asset allocations | 10.00% |
Non-U.S. Plans |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, actual plan asset allocations | 100.00% | 100.00%
Total, target | 100.00% |
Non-U.S. Plans | Equity Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, actual plan asset allocations | 35.00% | 41.00%
Non-U.S. Plans | Debt Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, actual plan asset allocations | 55.00% | 48.00%
Non-U.S. Plans | Other Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, actual plan asset allocations | 10.00% | 11.00%
Non-U.S. Plans | Minimum [Member] | Equity Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, target plan asset allocations | 30.00% |
Non-U.S. Plans | Minimum [Member] | Debt Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, target plan asset allocations | 50.00% |
Non-U.S. Plans | Minimum [Member] | Other Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, target plan asset allocations | 5.00% |
Non-U.S. Plans | Maximum [Member] | Equity Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, target plan asset allocations | 40.00% |
Non-U.S. Plans | Maximum [Member] | Debt Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, target plan asset allocations | 60.00% |
Non-U.S. Plans | Maximum [Member] | Other Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Defined benefit plan, target plan asset allocations | 15.00% |

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- Definition Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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