Impairment of Long-Lived Assets (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Dec. 31, 2017	Mar. 31, 2019	Mar. 31, 2018
Impairment of Long Lived Assets [Line Items]
Asset Impairment Charges		$ 0	$ 28
2018 Restructuring Plan
Impairment of Long Lived Assets [Line Items]
Asset Impairment Charges	$ 28
2018 Restructuring Plan | Global Products
Impairment of Long Lived Assets [Line Items]
Asset Impairment Charges	23
2018 Restructuring Plan | Corporate Segment
Impairment of Long Lived Assets [Line Items]
Asset Impairment Charges	5
2018 Restructuring Plan | Power Solutions
Impairment of Long Lived Assets [Line Items]
Asset Impairment Charges	$ 2