Goodwill And Other Intangibles (Schedule Of Change In Carry Amount Of Goodwill By Business Segment) (Details) (USD $) In Millions	12 Months Ended
Sep. 30, 2011	Sep. 30, 2010
Goodwill [Line Items]
Goodwill, beginning balance	$ 8,656	$ 7,078
Acquisitions	125	1,633
Divestitures	(15)	(46)
Impairment	(19)
Foreign currency translation and other	24	(9)
Goodwill, ending balance	8,771	8,656
Process Management [Member]
Goodwill [Line Items]
Goodwill, beginning balance	2,274	2,279
Acquisitions	110	27
Foreign currency translation and other	(16)	(32)
Goodwill, ending balance	2,368	2,274
Industrial Automation [Member]
Goodwill [Line Items]
Goodwill, beginning balance	1,379	1,304
Acquisitions		97
Divestitures	(1)
Impairment	(19)
Foreign currency translation and other	34	(22)
Goodwill, ending balance	1,393	1,379
Network Power [Member]
Goodwill [Line Items]
Goodwill, beginning balance	3,997	2,417
Acquisitions		1,509
Divestitures	(8)	(2)
Foreign currency translation and other	1	73
Goodwill, ending balance	3,990	3,997
Climate Technologies [Member]
Goodwill [Line Items]
Goodwill, beginning balance	464	473
Acquisitions	15
Foreign currency translation and other	4	(9)
Goodwill, ending balance	483	464
Tools And Storage [Member]
Goodwill [Line Items]
Goodwill, beginning balance	542	605
Divestitures	(6)	(44)
Foreign currency translation and other	1	(19)
Goodwill, ending balance	$ 537	$ 542

Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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+ Details

- Definition

Loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. Goodwill is assessed at least annually for impairment.

+ References

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+ Details

- Definition

The increase (decrease) in the recorded value of goodwill for foreign currency translation adjustments and purchase accounting adjustments needed to revise the carrying amount of goodwill to fair value.

+ References

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