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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%