Rationalization Of Operations (Details) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Sep. 30, 2015 USD ($)
Restructuring Reserve [Roll Forward]
Beginning rationalization of operations liability			$ 22
Rationalization of operations, expense	$ 36	$ 11	89	$ 45
Rationalization of operations, paid			63
Ending rationalization of operations liability	48		$ 48
Total number of facilities exited			8
Total number of forcecount reduced			2,300
Severance and benefits [Member]
Restructuring Reserve [Roll Forward]
Beginning rationalization of operations liability			$ 20
Rationalization of operations, expense			72
Rationalization of operations, paid			47
Ending rationalization of operations liability	45		45
Lease and other contract terminations [Member]
Restructuring Reserve [Roll Forward]
Beginning rationalization of operations liability			1
Rationalization of operations, expense			1
Rationalization of operations, paid			2
Ending rationalization of operations liability	0		0
Fixed assets write downs [Member]
Restructuring Reserve [Roll Forward]
Beginning rationalization of operations liability			0
Rationalization of operations, expense			2
Rationalization of operations, paid			2
Ending rationalization of operations liability	0		0
Vacant facility and other shutdown costs [Member]
Restructuring Reserve [Roll Forward]
Beginning rationalization of operations liability			0
Rationalization of operations, expense			4
Rationalization of operations, paid			2
Ending rationalization of operations liability	2		2
Start-up and moving costs [Member]
Restructuring Reserve [Roll Forward]
Beginning rationalization of operations liability			1
Rationalization of operations, expense			10
Rationalization of operations, paid			10
Ending rationalization of operations liability	1		1
Process Management [Member]
Restructuring Reserve [Roll Forward]
Rationalization of operations, expense	12	4	37	12
Industrial Automation [Member]
Restructuring Reserve [Roll Forward]
Rationalization of operations, expense	4	2	8	7
Network Power [Member]
Restructuring Reserve [Roll Forward]
Rationalization of operations, expense	17	3	31	13
Climate Technologies [Member]
Restructuring Reserve [Roll Forward]
Rationalization of operations, expense	2	1	8	11
Commercial & Residential Solutions [Member]
Restructuring Reserve [Roll Forward]
Rationalization of operations, expense	$ 1	$ 1	$ 5	$ 2
Minimum [Member] | Scenario, Forecast [Member]
Restructuring Reserve [Roll Forward]
Expected fiscal year rationalization expense					$ 160
Maximum [Member] | Scenario, Forecast [Member]
Restructuring Reserve [Roll Forward]
Expected fiscal year rationalization expense					$ 180