Consolidated Statements of Income (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended				6 Months Ended
	Mar. 31, 2013		Mar. 31, 2012		Mar. 31, 2013		Mar. 31, 2012
Net sales
Products and systems	$ 8,407	[1]	$ 8,495	[1]	$ 16,764	[1]	$ 16,829	[1]
Services	2,023	[1]	2,070	[1]	4,088	[1]	4,153	[1]
Net sales	10,430		10,565		20,852		20,982
Cost of sales
Products and systems	7,263	[1]	7,299	[1]	14,478	[1]	14,458	[1]
Services	1,679	[1]	1,713	[1]	3,378	[1]	3,435	[1]
Cost of sales	8,942		9,012		17,856		17,893
Gross profit	1,488		1,553		2,996		3,089
Selling, general and administrative expenses	(1,091)		(1,050)		(2,143)		(2,085)
Restructuring costs	(84)				(84)
Net financing charges	(66)		(63)		(127)		(112)
Equity income	148		79		233		199
Income before income taxes	395		519		875		1,091
Provision for income taxes	217		102		313		215
Net income	178		417		562		876
Income attributable to noncontrolling interests	30		38		60		73
Net income attributable to Johnson Controls, Inc.	$ 148		$ 379		$ 502		$ 803
Earnings per share
Basic (in dollars per share)	$ 0.22		$ 0.56		$ 0.73		$ 1.18
Diluted (in dollars per share)	$ 0.21		$ 0.55		$ 0.73		$ 1.17

[1] *Products and systems consist of Automotive Experience and Power Solutions products and systems and Building Efficiency installed systems. Services are Building Efficiency technical and Global Workplace Solutions.