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Financial Instruments and Fair Value Measurements - Transfer of Financial Assets Accounted for as Sales (Details) - USD ($) $ in Millions | 3 Months Ended |
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Dec. 31, 2022 | Dec. 31, 2021 | Sep. 30, 2022
Fair Value Disclosures [Abstract] |  |  |
Trade receivables transferred to third parties under factoring arrangements | $ 740 | $ 143 |
Amounts yet to be collected and remitted to the third parties | $ 314 |  | $ 323

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- Definition Transfers of financial assets during the period. + References No definition available. + Details
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Namespace Prefix: | bdx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
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Balance Type: | na
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- Definition Amount of derecognized financial assets from transactions which comprise an initial transfer and an agreement entered into in contemplation of the initial transfer resulting in retention of substantially all of the exposure to the economic return throughout the term of the transaction, at the date of derecognition. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4D -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=121570589&loc=SL51823488-111719 + Details
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Data Type: | xbrli:monetaryItemType
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Period Type: | instant