Consolidated Statements of Shareholders' Equity Attributable to Johnson Controls Ordinary Shareholders Consolidated Statements of Shareholders' Equity Attributable to Johnson Controls Ordinary Shareholders (Parenthetical) - $ / shares	3 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Dividend declared	$ 0.26	$ 0.26
Retained Earnings
Dividend declared	$ 0.26	$ 0.26