Discontinued Operations and Disposal Groups (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended |
Mar. 31, 2023 | Mar. 31, 2022 | Jun. 30, 2023 | Mar. 31, 2023 | Mar. 31, 2022 | Sep. 30, 2022 |
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract] | | | | | | |
Disposal Group, Including Discontinued Operation, Revenue | $ 1,245 | $ 1,500 | | $ 2,358 | $ 2,817 | |
Disposal Group, Including Discontinued Operation, Costs of Goods Sold | 782 | 1,024 | | 1,513 | 1,934 | |
Disposal Group, Including Discontinued Operation, General and Administrative Expense | 127 | 161 | | 277 | 323 | |
Gain (loss) on sale of business | (3) | 0 | | (2,783) | 0 | |
Disposal Group, Including Discontinued Operations, Other (income) deductions, net | 35 | 13 | | 79 | 25 | |
Earnings before income taxes | 304 | 302 | | 3,272 | 535 | |
Discontinued operations taxes | 39 | 56 | | 1,005 | 140 | |
Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, Net of Tax | 265 | 246 | | 2,267 | 395 | |
Disposal Group, Including Discontinued Operation, Balance Sheet Disclosures [Abstract] | | | | | | |
Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net | 780 | | | 780 | | $ 815 |
Disposal Group, Including Discontinued Operation, Inventory, Current | 505 | | | 505 | | 530 |
Disposal Group, Including Discontinued Operation, Other Assets, Current | 62 | | | 62 | | 53 |
Disposal Group, Including Discontinued Operation, Property, Plant and Equipment, Current | 1,171 | | | 1,171 | | 1,263 |
Disposal Group, Including Discontinued Operation, Goodwill, Current | 720 | | | 720 | | 718 |
Disposal Group, Including Discontinued Operation, Other Assets, Noncurrent | 347 | | | 347 | | 277 |
Disposal Group, Including Discontinued Operation, Assets | 3,585 | | | 3,585 | | 3,656 |
Disposal Group, Including Discontinued Operation, Accounts Payable and Accrued Liabilities, Current [Abstract] | 644 | | | 644 | | 812 |
Disposal Group, Including Discontinued Operation, Other Liabilities, Current | 494 | | | 494 | | 536 |
Disposal Group, Including Discontinued Operation, Other Liabilities, Noncurrent | 149 | | | 149 | | 167 |
Disposal Group, Including Discontinued Operation, Liabilities | 1,287 | | | 1,287 | | 1,515 |
Cash Provided by (Used in) Operating Activities, Discontinued Operations | | | | | | |
Cash Provided by (Used in) Operating Activities, Discontinued Operations | | | | (391) | 209 | |
Cash Provided by (Used in) Investing Activities, Discontinued Operations | | | | 2,916 | (88) | |
InSinkErator [Member] | | | | | | |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | | | | | | |
Purchase price | 3,000 | | | | | |
Disposal Group, Pre-tax earnings | | | | | | 152 |
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax | | | | 2,800 | | |
(Loss) on sale of business, net of tax | | | | 2,100 | | |
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract] | | | | | | |
Disposal Group, Including Discontinued Operation, Revenue | | | | | | 630 |
Discontinued Operation, Tax Effect of Discontinued Operation | | | | 660 | | |
Climate Technologies (excluding Therm-O-Disc) | | | | | | |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | | | | | | |
Disposal Group, Pre-tax earnings | | | | | | 1,000 |
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract] | | | | | | |
Disposal Group, Including Discontinued Operation, Revenue | 1,245 | 1,255 | | 2,309 | 2,334 | 5,000 |
Disposal Group, Including Discontinued Operation, Costs of Goods Sold | 782 | 866 | | 1,484 | 1,628 | |
Disposal Group, Including Discontinued Operation, General and Administrative Expense | 127 | 127 | | 269 | 254 | |
Gain (loss) on sale of business | 0 | 0 | | 0 | 0 | |
Disposal Group, Including Discontinued Operations, Other (income) deductions, net | 35 | 6 | | 67 | 12 | |
Earnings before income taxes | 301 | 256 | | 489 | 440 | |
Discontinued operations taxes | 39 | 56 | | 352 | 95 | |
Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, Net of Tax | 262 | 200 | | 137 | 345 | |
Ceased Depreciation | 43 | | | 70 | | |
Discontinued operations costs | 28 | | | 55 | | |
Discontinued Operation, Tax Effect of Discontinued Operation | | | | 245 | | |
Disposal Group, Including Discontinued Operation, Balance Sheet Disclosures [Abstract] | | | | | | |
Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net | 780 | | | 780 | | 747 |
Disposal Group, Including Discontinued Operation, Inventory, Current | 505 | | | 505 | | 449 |
Disposal Group, Including Discontinued Operation, Other Assets, Current | 62 | | | 62 | | 49 |
Disposal Group, Including Discontinued Operation, Property, Plant and Equipment, Current | 1,171 | | | 1,171 | | 1,122 |
Disposal Group, Including Discontinued Operation, Goodwill, Current | 720 | | | 720 | | 716 |
Disposal Group, Including Discontinued Operation, Other Assets, Noncurrent | 347 | | | 347 | | 265 |
Disposal Group, Including Discontinued Operation, Assets | 3,585 | | | 3,585 | | 3,348 |
Disposal Group, Including Discontinued Operation, Accounts Payable and Accrued Liabilities, Current [Abstract] | 644 | | | 644 | | 752 |
Disposal Group, Including Discontinued Operation, Other Liabilities, Current | 494 | | | 494 | | 475 |
Disposal Group, Including Discontinued Operation, Other Liabilities, Noncurrent | 149 | | | 149 | | 154 |
Disposal Group, Including Discontinued Operation, Liabilities | 1,287 | | | 1,287 | | 1,381 |
Cash Provided by (Used in) Operating Activities, Discontinued Operations | | | | | | |
Cash Provided by (Used in) Operating Activities, Discontinued Operations | | | | 44 | 234 | |
Cash Provided by (Used in) Investing Activities, Discontinued Operations | | | | (139) | (69) | |
Therm-O-Disc | | | | | | |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | | | | | | |
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax | | | | | | 486 |
(Loss) on sale of business, net of tax | | | | | | 429 |
Therm-O-Disc &/or InSinkErator | | | | | | |
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract] | | | | | | |
Disposal Group, Including Discontinued Operation, Revenue | 0 | 245 | | 49 | 483 | |
Disposal Group, Including Discontinued Operation, Costs of Goods Sold | 0 | 158 | | 29 | 306 | |
Disposal Group, Including Discontinued Operation, General and Administrative Expense | 0 | 34 | | 8 | 69 | |
Gain (loss) on sale of business | (3) | 0 | | (2,783) | 0 | |
Disposal Group, Including Discontinued Operations, Other (income) deductions, net | 0 | 7 | | 12 | 13 | |
Earnings before income taxes | 3 | 46 | | 2,783 | 95 | |
Discontinued operations taxes | 0 | 0 | | 653 | 45 | |
Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, Net of Tax | 3 | $ 46 | | 2,130 | 50 | |
Disposal Group, Including Discontinued Operation, Balance Sheet Disclosures [Abstract] | | | | | | |
Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net | 0 | | | 0 | | 68 |
Disposal Group, Including Discontinued Operation, Inventory, Current | 0 | | | 0 | | 81 |
Disposal Group, Including Discontinued Operation, Other Assets, Current | 0 | | | 0 | | 4 |
Disposal Group, Including Discontinued Operation, Property, Plant and Equipment, Current | 0 | | | 0 | | 141 |
Disposal Group, Including Discontinued Operation, Goodwill, Current | 0 | | | 0 | | 2 |
Disposal Group, Including Discontinued Operation, Other Assets, Noncurrent | 0 | | | 0 | | 12 |
Disposal Group, Including Discontinued Operation, Assets | 0 | | | 0 | | 308 |
Disposal Group, Including Discontinued Operation, Accounts Payable and Accrued Liabilities, Current [Abstract] | 0 | | | 0 | | 60 |
Disposal Group, Including Discontinued Operation, Other Liabilities, Current | 0 | | | 0 | | 61 |
Disposal Group, Including Discontinued Operation, Other Liabilities, Noncurrent | 0 | | | 0 | | 13 |
Disposal Group, Including Discontinued Operation, Liabilities | $ 0 | | | 0 | | $ 134 |
Cash Provided by (Used in) Operating Activities, Discontinued Operations | | | | | | |
Cash Provided by (Used in) Operating Activities, Discontinued Operations | | | | (435) | (25) | |
Cash Provided by (Used in) Investing Activities, Discontinued Operations | | | | $ 3,055 | $ (19) | |
Forecast [Member] | Climate Technologies (excluding Therm-O-Disc) | | | | | | |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | | | | | | |
Noncontrolling Interest, Ownership Percentage by Parent | | | 45% | | | |
Forecast [Member] | Climate Technologies (excluding Therm-O-Disc) | | | | | | |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | | | | | | |
Proceeds from Divestiture of Businesses | | | $ 9,500 | | | |
Purchase price | | | 14,000 | | | |
Proceeds from Sale and Collection of Notes Receivable | | | $ 2,250 | | | |