Discontinued Operations Disposal Group - Assets Held For Sale (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2019	Jun. 30, 2019	Jun. 30, 2020	Sep. 30, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets held for sale			$ 89	$ 98
Noncurrent assets held for sale			199	60
Liabilities held for sale			38	44
Noncurrent liabilities held for sale			17	$ 0
Global Products
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total Long-Lived Asset Held-for-Sale Impairment			250
Impairment of Long-Lived Assets to be Disposed of	$ 15	$ 235
Building Solutions Asia Pacific | Individually immaterial disposal group [Domain]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Assets			$ 141