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Acquisitions and Divestitures - Divestitures (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Sep. 30, 2022
Business Acquisition [Line Items] |  |  |
Proceeds from sale of businesses, net of cash sold | $ 13 | $ 0 |
Discontinued Operations, Disposed of by Means Other than Sale, Spinoff | Food Safety Division Business |  |  |
Business Acquisition [Line Items] |  |  |
Operating income of businesses held for sale | $ 30 | $ 30 |
Forecast | Discontinued Operations, Disposed of by Means Other than Sale, Spinoff |  |  |
Business Acquisition [Line Items] |  |  |
Proceeds from sale of businesses, net of cash sold |  |  | $ 1,000
Forecast | Discontinued Operations, Disposed of by Means Other than Sale, Spinoff | Shareholders Of Three M |  |  |
Business Acquisition [Line Items] |  |  |
Ownership interest after spinoff (as a percent) |  |  | 50.10%
Forecast | Discontinued Operations, Disposed of by Means Other than Sale, Spinoff | Food Safety Division Business | NEOGEN Corporation |  |  |
Business Acquisition [Line Items] |  |  |
Ownership interest after spinoff (as a percent) |  |  | 49.90%

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