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Consolidated Statements of Shareholders' Equity Attributable to Johnson Controls Ordinary Shareholders Consolidated Statements of Shareholders' Equity Attributable to Johnson Controls Ordinary Shareholders - USD ($) $ in Millions	Total	Ordinary Shares	Capital in excess of par value	Retained Earnings	Treasury Stock, at Cost	Accumulated Other Comprehensive Loss	Power Solutions	Power Solutions Ordinary Shares	Power Solutions Capital in excess of par value	Power Solutions Retained Earnings	Power Solutions Treasury Stock, at Cost	Power Solutions Accumulated Other Comprehensive Loss
Beginning balance at Sep. 30, 2017	$ 20,447	$ 9	$ 16,390	$ 5,231	$ (710)	$ (473)
Comprehensive income (loss)	1,056	0	0	1,391	0	(335)
Cash dividends - ordinary shares	(722)	0	0	(722)	0	0
Repurchase of ordinary shares	(255)	0	0	0	(255)	0
Accounting Pronouncement | Adoption of ASU 2016-09	179	0	0	179	0	0
Accounting Pronouncement | Adoption of ASU 2016-01						0
Other, including options exercised	68	0	111	(4)	(39)	0
Ending balance at Jun. 30, 2018	20,773	9	16,501	6,075	(1,004)	(808)
Beginning balance at Mar. 31, 2018	20,874	9	16,471	5,594	(946)	(254)
Comprehensive income (loss)	169	0	0	723	0	(554)
Cash dividends - ordinary shares	(240)	0	0	(240)	0	0
Repurchase of ordinary shares	(56)	0	0	0	(56)	0
Other, including options exercised	26	0	30	(2)	(2)	0
Ending balance at Jun. 30, 2018	20,773	9	16,501	6,075	(1,004)	(808)
Beginning balance at Sep. 30, 2018	21,164	10	16,549	6,604	(1,053)	(946)
Comprehensive income (loss)	4,969	0	0	5,062	0	(93)
Cash dividends - ordinary shares	(683)	0	0	(683)	0	0
Repurchases and retirements of ordinary shares	(5,122)
Repurchase of ordinary shares	(1,087)		0		(1,087)	0
Stock Repurchased and Retired During Period, Value	(4,035)	(1)		(4,034)
Divestiture of Power Solutions							$ 483	$ 0	$ 0	$ 0	$ 0	$ 483
Accounting Pronouncement | Adoption of ASC 606	(45)	0	0	(45)	0	0
Accounting Pronouncement | Adoption of ASU 2016-01	0	0	0	8	0	(8)
Accounting Pronouncement | Adoption of ASU 2016-16	(546)	0	0	(546)	0	0
Other, including options exercised	143	0	171	0	(28)	0
Ending balance at Jun. 30, 2019	20,363	9	16,720	6,366	(2,168)	(564)
Beginning balance at Mar. 31, 2019	20,036	10	16,640	6,416	(2,078)	(952)
Comprehensive income (loss)	4,097	0	0	4,192	0	(95)
Cash dividends - ordinary shares	(208)	0	0	(208)	0	0
Repurchases and retirements of ordinary shares	(4,122)
Repurchase of ordinary shares	(87)		0		(87)	0
Stock Repurchased and Retired During Period, Value		(1)		(4,034)
Divestiture of Power Solutions							$ 483	$ 0	$ 0	$ 0	$ 0	$ 483
Other, including options exercised	77	0	80	0	(3)	0
Ending balance at Jun. 30, 2019	$ 20,363	$ 9	$ 16,720	$ 6,366	$ (2,168)	$ (564)

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