Rationalization Of Operations (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended			12 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended				9 Months Ended		9 Months Ended		9 Months Ended		9 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Sep. 30, 2012	Sep. 30, 2013 Minimum [Member]	Sep. 30, 2013 Maximum [Member]	Jun. 30, 2013 Process Management [Member]	Jun. 30, 2012 Process Management [Member]	Jun. 30, 2013 Process Management [Member]	Jun. 30, 2012 Process Management [Member]	Jun. 30, 2013 Industrial Automation [Member]	Jun. 30, 2012 Industrial Automation [Member]	Jun. 30, 2013 Industrial Automation [Member]	Jun. 30, 2012 Industrial Automation [Member]	Jun. 30, 2013 Network Power [Member]	Jun. 30, 2012 Network Power [Member]	Jun. 30, 2013 Network Power [Member]	Jun. 30, 2012 Network Power [Member]	Jun. 30, 2013 Climate Technologies [Member]	Jun. 30, 2012 Climate Technologies [Member]	Jun. 30, 2013 Climate Technologies [Member]	Jun. 30, 2012 Climate Technologies [Member]	Jun. 30, 2013 Commercial & Residential Solutions [Member]	Jun. 30, 2012 Commercial & Residential Solutions [Member]	Jun. 30, 2013 Commercial & Residential Solutions [Member]	Jun. 30, 2012 Commercial & Residential Solutions [Member]	Jun. 30, 2013 Severance and benefits [Member]	Sep. 30, 2012 Severance and benefits [Member]	Jun. 30, 2013 Lease and other contract terminations [Member]	Sep. 30, 2012 Lease and other contract terminations [Member]	Jun. 30, 2013 Fixed Asset Write Downs [Member]	Sep. 30, 2012 Fixed Asset Write Downs [Member]	Jun. 30, 2013 Vacant facility and other shutdown costs [Member]	Sep. 30, 2012 Vacant facility and other shutdown costs [Member]	Jun. 30, 2013 Start-up and moving costs [Member]	Sep. 30, 2012 Start-up and moving costs [Member]
Rationalization Of Operations [Line Items]
Rationalization of operations, liability	$ 38		$ 38		$ 32																							$ 31	$ 23	$ 4	$ 5	$ 0	$ 0	$ 2	$ 3	$ 1	$ 1
Rationalization of operations, expense	33	35	65	89				4	4	11	13	14	13	24	21	12	14	21	40	0	2	2	8	3	2	7	7	38		2		1		5		19
Rationalization of operations, paid/utilized during the period			59																									30		3		1		6		19
Expected fiscal year rationalization expense						$ 80	$ 85