Rationalization Of Operations (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Sep. 30, 2016
Restructuring Reserve [Roll Forward]
Beginning rationalization of operations liability			$ 112
Rationalization of operations, expense	$ 15	$ 36	43	$ 89
Rationalization of operations, paid			111
Ending rationalization of operations liability	44		44
Severance and benefits [Member]
Restructuring Reserve [Roll Forward]
Beginning rationalization of operations liability			105
Rationalization of operations, expense			23
Rationalization of operations, paid			88
Ending rationalization of operations liability	40		40
Lease and other contract terminations [Member]
Restructuring Reserve [Roll Forward]
Beginning rationalization of operations liability			1
Rationalization of operations, expense			2
Rationalization of operations, paid			2
Ending rationalization of operations liability	1		1
Vacant facility and other shutdown costs [Member]
Restructuring Reserve [Roll Forward]
Beginning rationalization of operations liability			3
Rationalization of operations, expense			6
Rationalization of operations, paid			8
Ending rationalization of operations liability	1		1
Start-up and moving costs [Member]
Restructuring Reserve [Roll Forward]
Beginning rationalization of operations liability			3
Rationalization of operations, expense			12
Rationalization of operations, paid			13
Ending rationalization of operations liability	2		2
Process Management [Member]
Restructuring Reserve [Roll Forward]
Rationalization of operations, expense	7	12	20	37
Industrial Automation [Member]
Restructuring Reserve [Roll Forward]
Rationalization of operations, expense	5	4	9	8
Network Power [Member]
Restructuring Reserve [Roll Forward]
Rationalization of operations, expense	(1)	17	5	31
Climate Technologies [Member]
Restructuring Reserve [Roll Forward]
Rationalization of operations, expense	1	2	4	8
Commercial & Residential Solutions [Member]
Restructuring Reserve [Roll Forward]
Rationalization of operations, expense	0	1	2	5
Corporate [Member]
Restructuring Reserve [Roll Forward]
Rationalization of operations, expense	$ 3	$ 0	$ 3	$ 0
Minimum [Member] | Scenario, Forecast [Member]
Restructuring Reserve [Roll Forward]
Expected fiscal year rationalization expense					$ 90
Maximum [Member] | Scenario, Forecast [Member]
Restructuring Reserve [Roll Forward]
Expected fiscal year rationalization expense					$ 100