CONSOLIDATED STATEMENT OF CHANGES IN SHAREHOLDERS' EQUITY (UNAUDITED) (Parenthetical) $ in Millions	12 Months Ended
Sep. 30, 2020 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Increase in total equity balance	$ 5,639
BioPharma
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
After tax gain (loss) in discontinued operations	11,214
Baker Hughes
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
After-tax change in unrealized loss	$ (3,679)

Equity Securities, FV-NI, Unrealized Gain (Loss), Net Of Tax

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Amount after tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

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The increase (decrease) in stockholders' equity during the period.

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