Rationalization Of Operations (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Restructuring Reserve [Roll Forward]
Beginning rationalization of operations liability	$ 32
Rationalization of operations, expense	13	16
Rationalization of operations, paid	17
Ending rationalization of operations liability	28
Minimum [Member]
Restructuring Reserve [Roll Forward]
Expected fiscal year rationalization expense	80
Maximum [Member]
Restructuring Reserve [Roll Forward]
Expected fiscal year rationalization expense	90
Process Management [Member]
Restructuring Reserve [Roll Forward]
Rationalization of operations, expense	3	3
Industrial Automation [Member]
Restructuring Reserve [Roll Forward]
Rationalization of operations, expense	2	5
Network Power [Member]
Restructuring Reserve [Roll Forward]
Rationalization of operations, expense	4	4
Climate Technologies [Member]
Restructuring Reserve [Roll Forward]
Rationalization of operations, expense	3	1
Commercial & Residential Solutions [Member]
Restructuring Reserve [Roll Forward]
Rationalization of operations, expense	1
Severance and benefits [Member]
Restructuring Reserve [Roll Forward]
Beginning rationalization of operations liability	27
Rationalization of operations, expense	7
Rationalization of operations, paid	11
Ending rationalization of operations liability	23
Lease and other contract terminations [Member]
Restructuring Reserve [Roll Forward]
Beginning rationalization of operations liability	3
Rationalization of operations, expense	0
Rationalization of operations, paid	0
Ending rationalization of operations liability	3
Vacant facility and other shutdown costs [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
Start-up and moving costs [Member]
Restructuring Reserve [Roll Forward]
Beginning rationalization of operations liability	1
Rationalization of operations, expense	4
Rationalization of operations, paid	4
Ending rationalization of operations liability	$ 1