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Financial Instruments (Schedule Of Derivative Instruments) (Details) $ / shares in Units, € in Millions, lb in Millions, $ in Millions | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2023 USD ($) lb | Mar. 31, 2022 USD ($) | Mar. 31, 2023 USD ($) lb | Mar. 31, 2022 USD ($) | Apr. 12, 2023 $ / shares | Sep. 30, 2019 EUR (€)
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |
Gain (loss) reclassified to earnings | $ (15) | $ 23 | $ (11) | $ 77 |  |
Other Comprehensive Income (Loss), Total | 10 | 57 | (101) | 117 |  |
Net sales | 3,756 | 3,291 | 7,129 | 6,447 |  |
National Instruments | Forecast [Member] |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |
Business Acquisition, Share Price | $ / shares |  |  |  |  | $ 60 |
National Instruments |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |
Investments | 117 |  | 117 |  |  |
Debt and Equity Securities, Unrealized Gain (Loss) | 35 |  |  |  |  |
Commodity Contract [Member] | Cash Flow Hedging [Member] | Cost of Sales [Member] |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |
Gain (loss) reclassified to earnings | (2) | 6 | (10) | 13 |  |
Commodity Contract [Member] | Cash Flow Hedging [Member] | Cost of Sales [Member] | Other Comprehensive Income (Loss) [Member] |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |
Gain (Loss) to other comprehensive income | 8 | 10 | 19 | 23 |  |
Foreign Exchange Contract [Member] |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |
Notional amount of foreign currency hedge positions | 5,000 |  | 5,000 |  |  |
Foreign Exchange Contract [Member] | Other deductions, net [Member] |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |
Gain (loss) reclassified to earnings | (22) | 8 | (17) | 52 |  |
Foreign Exchange Contract [Member] | Cash Flow Hedging [Member] | Cost of Sales [Member] |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |
Gain (loss) reclassified to earnings | 10 | 9 | 18 | 11 |  |
Foreign Exchange Contract [Member] | Cash Flow Hedging [Member] | Cost of Sales [Member] | Other Comprehensive Income (Loss) [Member] |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |
Gain (Loss) to other comprehensive income | 17 | 14 | 14 | 17 |  |
Foreign Exchange Contract [Member] | Cash Flow Hedging [Member] | Sales [Member] |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |
Gain (loss) reclassified to earnings | (1) | 0 | (2) | 1 |  |
Foreign Exchange Contract [Member] | Cash Flow Hedging [Member] | Sales [Member] | Other Comprehensive Income (Loss) [Member] |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |
Gain (Loss) to other comprehensive income | (1) | (2) | 3 | (2) |  |
Foreign Exchange Contract [Member] | Net Investment Hedging [Member] | Other Comprehensive Income (Loss) [Member] |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |
Gain (loss) to other comprehensive income | (14) | $ 35 | (137) | $ 79 |  |
All Commodity Hedges [Member] |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |
Amount of commodities hedged | $ 136 |  | $ 136 |  |  |
Copper and Aluminum [Member] |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |
Weight in pounds of copper and aluminum commodity hedges | lb | 40 |  | 40 |  |  |
Senior Notes [Member] |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |
Debt, face amount | € |  |  |  |  |  | € 1,500

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