Financial Instruments [Line Items]

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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-Publisher FASB
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- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

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

The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

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- Definition

Nominal mass used to calculate payments on a derivative instrument.

+ References

No definition available.

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- Definition

Nominal or face amount used to calculate payment on derivative.

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- Definition

The amount of net gains or losses on foreign currency cash flow hedges reclassified during the period to earnings from accumulated other comprehensive income upon the hedged transaction affecting earnings.

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- Definition

Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Financial Instruments (Schedule Of Derivative Instruments) (Details) € in Millions, lb in Millions, $ in Millions	12 Months Ended
	Sep. 30, 2020 USD ($) lb	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2019 EUR (€)
Financial Instruments [Line Items]
Gain (Loss) reclassified to earnings	$ (49)	$ 68	$ 0
Gain (Loss) to other comprehensive income	(134)	66	2
Senior Notes [Member]
Financial Instruments [Line Items]
Debt, face amount \| €				€ 1,500
Commodity [Member]
Financial Instruments [Line Items]
Notional value of hedge positions	80
Foreign currency [Member]
Financial Instruments [Line Items]
Notional value of hedge positions	2,200
Foreign currency [Member] \| Other deductions, net [Member]
Financial Instruments [Line Items]
Gain (Loss) reclassified to earnings	$ (40)	66	(15)
Copper and aluminum [Member] \| Commodity [Member]
Financial Instruments [Line Items]
Weight of copper and aluminum for commodity hedges, in pounds \| lb	34
Cash Flow Hedging [Member] \| Commodity [Member] \| Cost of sales [Member]
Financial Instruments [Line Items]
Gain (Loss) reclassified to earnings	$ (8)	(11)	13
Cash Flow Hedging [Member] \| Foreign currency [Member] \| Cost of sales [Member]
Financial Instruments [Line Items]
Gain (Loss) reclassified to earnings	4	20	4
Cash Flow Hedging [Member] \| Foreign currency [Member] \| Sales [Member]
Financial Instruments [Line Items]
Gain (Loss) reclassified to earnings	(5)	(7)	(2)
Other Comprehensive Income (Loss) [Member] \| Cash Flow Hedging [Member] \| Commodity [Member] \| Cost of sales [Member]
Financial Instruments [Line Items]
Gain (Loss) to other comprehensive income	10	(10)	(7)
Other Comprehensive Income (Loss) [Member] \| Cash Flow Hedging [Member] \| Foreign currency [Member] \| Cost of sales [Member]
Financial Instruments [Line Items]
Gain (Loss) to other comprehensive income	(25)	14	20
Other Comprehensive Income (Loss) [Member] \| Cash Flow Hedging [Member] \| Foreign currency [Member] \| Sales [Member]
Financial Instruments [Line Items]
Gain (Loss) to other comprehensive income	4	(8)	(11)
Other Comprehensive Income (Loss) [Member] \| Net Investment Hedging [Member] \| Foreign currency [Member]
Financial Instruments [Line Items]
Gain (Loss) to other comprehensive income	$ (123)	$ 70	$ 0