Segment Reporting (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Net sales	$ 5,606	$ 5,553
Inventory costs (Purchase Accounting)	21
Earnings before income taxes	643	673
Eliminations/Interest	(54)	(54)
Pretax Charitable Contribution of Equity Investment	30
After-tax Charitable Contribution of Equity Investment	5
Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	5,745	5,697
Earnings before income taxes	825	800
Intersegment Eliminations [Member] | Industrial Automation [Member]
Segment Reporting Information [Line Items]
Net sales	116	121
Operating Segments [Member] | Process Management [Member]
Segment Reporting Information [Line Items]
Net sales	2,041	1,896
Earnings before income taxes	373	333
Operating Segments [Member] | Industrial Automation [Member]
Segment Reporting Information [Line Items]
Net sales	1,149	1,137
Earnings before income taxes	162	164
Operating Segments [Member] | Network Power [Member]
Segment Reporting Information [Line Items]
Net sales	1,303	1,459
Earnings before income taxes	83	105
Operating Segments [Member] | Climate Technologies [Member]
Segment Reporting Information [Line Items]
Net sales	786	752
Earnings before income taxes	107	101
Operating Segments [Member] | Commercial & Residential Solutions [Member]
Segment Reporting Information [Line Items]
Net sales	466	453
Earnings before income taxes	100	97
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Differences in accounting methods	57	50
Corporate and other	(185)	(123)
Eliminations/Interest	(54)	(54)
Consolidation, Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales		(144)
Consolidation, Eliminations [Member] | Corporate Segment [Member]
Segment Reporting Information [Line Items]
Net sales	$ (139)