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Employee Retirement Plans - Pension Plans Assets (Details) - Pension Benefits - U.S. | Sep. 30, 2022 | Sep. 30, 2021
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Defined Benefit Plans and Other Postretirement Benefit Plans |  |
Actual | 100.00% | 100.00%
Target Asset Allocation | 100.00% | 100.00%
Target allocation range | 5.00% |
U.S. equities |  |
Defined Benefit Plans and Other Postretirement Benefit Plans |  |
Actual | 26.50% | 22.20%
Target Asset Allocation | 24.70% | 25.30%
Non-U.S. equities |  |
Defined Benefit Plans and Other Postretirement Benefit Plans |  |
Actual | 20.90% | 21.70%
Target Asset Allocation | 20.90% | 21.40%
Global equities |  |
Defined Benefit Plans and Other Postretirement Benefit Plans |  |
Actual | 13.80% | 16.00%
Target Asset Allocation | 13.10% | 13.10%
Equity investments |  |
Defined Benefit Plans and Other Postretirement Benefit Plans |  |
Actual | 61.20% | 59.90%
Target Asset Allocation | 58.70% | 59.80%
Fixed income funds & cash equivalents |  |
Defined Benefit Plans and Other Postretirement Benefit Plans |  |
Actual | 35.50% | 36.40%
Target Asset Allocation | 35.00% | 34.40%
Alternative investments |  |
Defined Benefit Plans and Other Postretirement Benefit Plans |  |
Actual | 3.30% | 3.70%
Target Asset Allocation | 6.30% | 5.80%

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- Definition Defined Benefit Plan, Plan Assets, Target Allocation Range, Percentage + References No definition available. + Details
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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 https://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 https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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- Definition Percentage of actual 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/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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