Consolidated Statements of Comprehensive Income (Loss) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Statement of Other Comprehensive Income [Abstract]
Net income	$ 594	$ 456	$ 1,156	$ 1,332
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(52)	(344)	(188)	(398)
Realized and unrealized gains (losses) on derivatives	(3)	(1)	(11)	28
Unrealized gains (losses) on marketable common stock	(7)	(3)	(1)	5
Pension and postretirement plans	(3)	9	(15)	9
Other comprehensive loss	(65)	(339)	(215)	(356)
Total comprehensive income	529	117	941	976
Comprehensive income attributable to noncontrolling interests	22	28	82	100
Comprehensive income attributable to Johnson Controls, Inc.	$ 507	$ 89	$ 859	$ 876