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Subsequent Events (Details) - USD ($)
$ in Millions
1 Months Ended 6 Months Ended 12 Months Ended
Oct. 31, 2023
Jun. 30, 2023
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2020
Subsequent Event [Line Items]          
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal     $ 486 $ 0 $ 0
Scenario, Forecast [Member] | Climate Technologies (excluding Therm-O-Disc) [Member]          
Subsequent Event [Line Items]          
Noncontrolling Interest, Ownership Percentage by Parent   45.00%      
Climate Technologies (excluding Therm-O-Disc) [Member]          
Subsequent Event [Line Items]          
Disposal Group, including discountinued operation, revenue     5,000    
Disposal Group, Pre-tax earnings     1,000    
Climate Technologies (excluding Therm-O-Disc) [Member] | Scenario, Forecast [Member]          
Subsequent Event [Line Items]          
Purchase price   $ 14,000      
Proceeds from Divestiture of Businesses   9,500      
Proceeds from Sale and Collection of Notes Receivable   $ 2,250      
Interest on note receivable   5.00%      
InSinkErator [Member]          
Subsequent Event [Line Items]          
Disposal Group, including discountinued operation, revenue     630    
Disposal Group, Pre-tax earnings     $ 152    
InSinkErator [Member] | Scenario, Forecast [Member]          
Subsequent Event [Line Items]          
Purchase price $ 3,000