Consolidated Statements of Shareholders' Equity Attributable to Johnson Controls, Inc. - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital [Member]	Retained Earnings	Treasury Stock [Member]	AOCI Attributable to Parent [Member]
Beginning balance at Sep. 30, 2013	$ 12,273	$ 7	$ 3,092	$ 9,287	$ (531)	$ 418
Comprehensive income (loss)	560	0	0	1,215	0	(655)
Common stock dividend	586	0	0	586	0	0
Repurchases of common stock	(1,249)	0	0	0	(1,249)	0
Other, including options exercised	(272)	0	(277)	1	4	0
Ending balance at Sep. 30, 2014	11,270	7	3,369	9,915	(1,784)	(237)
Comprehensive income (loss)	743	0	0	1,563	0	(820)
Common stock dividend	(681)	0	0	(681)	0	0
Repurchases of common stock	(1,362)	0	0	0	(1,362)	0
Other, including options exercised	(365)	0	(371)	0	6	0
Ending balance at Sep. 30, 2015	10,335	7	3,740	10,797	(3,152)	(1,057)
Comprehensive income (loss)	(877)	0	0	(847)	0	(30)
Common stock dividend	(752)	0	0	(752)	0	0
Repurchases of common stock	(501)	0	0	0	(501)	0
Stockholders Equity, Change due to Merger	(6,500)	(7)	(3,657)	(6,500)	3,664	0
Other, including options exercised	(157)	0	(168)	0	11	0
Ending balance at Sep. 30, 2016	$ 1,862	$ 0	$ 251	$ 2,698	$ 0	$ (1,087)