Rationalization Of Operations (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Rationalization Of Operations [Line Items]
Rationalization of operations, expense	$ 35	$ 21	$ 89	$ 54
Rationalization of operations, liability	31		31			30
Rationalization of operations, paid/utilized during the period			88
Expected fiscal year rationalization expense					125
Severance and benefits [Member]
Rationalization Of Operations [Line Items]
Rationalization of operations, expense			47
Rationalization of operations, liability	24		24			24
Rationalization of operations, paid/utilized during the period			47
Lease and other contract terminations [Member]
Rationalization Of Operations [Line Items]
Rationalization of operations, expense			9
Rationalization of operations, liability	5		5			3
Rationalization of operations, paid/utilized during the period			7
Fixed asset write downs [Member]
Rationalization Of Operations [Line Items]
Rationalization of operations, expense			2
Rationalization of operations, liability	0		0			0
Rationalization of operations, paid/utilized during the period			2
Vacant facility and other shutdown costs [Member]
Rationalization Of Operations [Line Items]
Rationalization of operations, expense			9
Rationalization of operations, liability	2		2			2
Rationalization of operations, paid/utilized during the period			9
Start-up and moving costs [Member]
Rationalization Of Operations [Line Items]
Rationalization of operations, expense			22
Rationalization of operations, liability	0		0			1
Rationalization of operations, paid/utilized during the period			23
Process Management [Member]
Rationalization Of Operations [Line Items]
Rationalization of operations, expense	4	4	13	8
Industrial Automation [Member]
Rationalization Of Operations [Line Items]
Rationalization of operations, expense	13	8	21	18
Network Power [Member]
Rationalization Of Operations [Line Items]
Rationalization of operations, expense	14	6	40	16
Climate Technologies [Member]
Rationalization Of Operations [Line Items]
Rationalization of operations, expense	2	2	8	8
Commercial & Residential Solutions [Member]
Rationalization Of Operations [Line Items]
Rationalization of operations, expense	$ 2	$ 1	$ 7	$ 4