PENSION AND OTHER POSTRETIREMENT BENEFITS Plan Assets Allocation Percentages (Details)	Jul. 31, 2020	Jul. 31, 2019
Cash and accrued income
Defined Benefit Plan Disclosure
Target Allocation %	2.00%
Actual Allocation %	1.00%	0.00%
Fixed income
Defined Benefit Plan Disclosure
Target Allocation %	38.00%
Actual Allocation %	68.00%	42.00%
Equity
Defined Benefit Plan Disclosure
Target Allocation %	60.00%
Actual Allocation %	31.00%	58.00%

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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=118257860&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
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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.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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