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v3.21.2

Derivative Instruments and Hedging Activities - Location and Fair Values of Derivative Instruments and Hedging Activities (Detail) shares in Thousands, $ in Millions | 9 Months Ended |
--- | --- | ---
Jun. 30, 2021 USD ($) T shares | Sep. 30, 2020 USD ($) T shares
Derivative Instruments [Line Items] |  |
Hedge Percentage For Foreign Exchange Transactional Exposures Minimum | 70.00% |
Hedge Percentage For Foreign Exchange Transactional Exposures Maximum | 90.00% |
Derivative assets | $ 48 | $ 87
Derivative liabilities | 3,022 | $ 3,020
Interest Rate Swaps |  |
Derivative Instruments [Line Items] |  |
Derivative, Notional Amount | $ 500 |
Copper [Member] |  |
Derivative Instruments [Line Items] |  |
Derivative, Nonmonetary Notional Amount | T | 2,452 | 2,497
Aluminum [Member] |  |
Derivative Instruments [Line Items] |  |
Derivative, Nonmonetary Notional Amount | T | 2,415 | 3,036
Equity swap |  |
Derivative Instruments [Line Items] |  |
Derivative, amount of hedged ordinary shares | shares | 300 | 1,400
Derivative, Amount of Hedged Item | $ 23 | $ 60
Designated as Hedging Instrument |  |
Derivative Instruments [Line Items] |  |
Derivative assets | 15 | 12
Derivative liabilities | 3,017 | 3,020
Designated as Hedging Instrument | Other Current Assets | Foreign Currency Exchange Derivatives |  |
Derivative Instruments [Line Items] |  |
Derivative assets | 11 | 10
Designated as Hedging Instrument | Other Current Assets | Commodity Derivatives |  |
Derivative Instruments [Line Items] |  |
Derivative assets | 4 | 2
Designated as Hedging Instrument | Other Noncurrent Assets | Equity swap |  |
Derivative Instruments [Line Items] |  |
Derivative assets | 0 | 0
Designated as Hedging Instrument | Other Current Liabilities | Foreign Currency Exchange Derivatives |  |
Derivative Instruments [Line Items] |  |
Derivative liabilities | 4 | 10
Designated as Hedging Instrument | Other Current Liabilities | Interest Rate Swaps |  |
Derivative Instruments [Line Items] |  |
Derivative liabilities | 13 | 0
Designated as Hedging Instrument | Other Current Liabilities | Commodity Derivatives |  |
Derivative Instruments [Line Items] |  |
Derivative liabilities | 1 | 0
Designated as Hedging Instrument | Long-term Debt | Foreign Currency Denominated Debt [Member] |  |
Derivative Instruments [Line Items] |  |
Derivative liabilities | 2,999 | 3,010
Not Designated as Hedging Instrument |  |
Derivative Instruments [Line Items] |  |
Derivative assets | 33 | 75
Derivative liabilities | 5 | 0
Not Designated as Hedging Instrument | Other Current Assets | Foreign Currency Exchange Derivatives |  |
Derivative Instruments [Line Items] |  |
Derivative assets | 10 | 17
Not Designated as Hedging Instrument | Other Current Assets | Commodity Derivatives |  |
Derivative Instruments [Line Items] |  |
Derivative assets | 0 | 0
Not Designated as Hedging Instrument | Other Noncurrent Assets | Equity swap |  |
Derivative Instruments [Line Items] |  |
Derivative assets | 23 | 58
Not Designated as Hedging Instrument | Other Current Liabilities | Foreign Currency Exchange Derivatives |  |
Derivative Instruments [Line Items] |  |
Derivative liabilities | 5 | 0
Not Designated as Hedging Instrument | Other Current Liabilities | Interest Rate Swaps |  |
Derivative Instruments [Line Items] |  |
Derivative liabilities | 0 | 0
Not Designated as Hedging Instrument | Other Current Liabilities | Commodity Derivatives |  |
Derivative Instruments [Line Items] |  |
Derivative liabilities | 0 | 0
Not Designated as Hedging Instrument | Long-term Debt | Foreign Currency Denominated Debt [Member] |  |
Derivative Instruments [Line Items] |  |
Derivative liabilities | $ 0 | $ 0

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- Definition Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226052-175313 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226000-175313 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4D -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=121570589&loc=SL51823488-111719 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5624163-113959 + Details
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