Derivative Instruments and Hedging Activities Outstanding Commodity Hedge Contracts (Details) - T	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Derivative [Line Items]
Document Period End Date	Sep. 30, 2019
Copper [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount, Mass	3,561	3,175
Lead [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount, Mass	0	49,066
Polypropylene [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount, Mass	0	15,868
Aluminum [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount, Mass	2,967	3,381
Tin [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount, Mass	0	3,076