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OTHER FINANCIAL INFORMATION - Schedule of Depreciation and Amortization components (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024 | Mar. 31, 2025 | Mar. 31, 2024
Other Financial Information [Abstract] |  |  |  |
Depreciation expense | $ 83 | $ 79 | $ 166 | $ 158
Amortization of intangibles (includes $49, $49, $98 and $99 reported in Cost of Sales, respectively) | 278 | 322 | 556 | 645
Amortization of capitalized software | 23 | 23 | 45 | 43
Total | 384 | 424 | 767 | 846
Amortization of intangibles in cost of sales | $ 49 | $ 49 | $ 99 | $ 98

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- Definition Amount of expense for amortization of capitalized computer software costs. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 985 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481283/985-20-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 985 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481283/985-20-50-1 + Details
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