Consolidated Statements of Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Net sales	$ 6,614	$ 6,341	$ 18,574	$ 17,276
Cost of sales	4,414	4,144	12,526	11,408
Gross profit	2,200	2,197	6,048	5,868
Selling, general and administrative expenses	(1,589)	(1,367)	(4,412)	(3,914)
Restructuring and impairment costs	(121)	(79)	(554)	(175)
Net financing charges	(49)	(56)	(153)	(159)
Equity income	63	74	175	188
Income from continuing operations before income taxes	504	769	1,104	1,808
Income tax provision	61	108	190	378
Income from continuing operations	443	661	914	1,430
Income from discontinued operations, net of tax (Note 4)	0	0	0	124
Net income	443	661	914	1,554
Income from continuing operations attributable to noncontrolling interests	64	87	143	186
Net income attributable to Johnson Controls	379	574	771	1,368
Amounts attributable to Johnson Controls ordinary shareholders
Income from continuing operations	379	574	771	1,244
Income from discontinued operations	$ 0	$ 0	$ 0	$ 124
Earnings per share
Basic earnings per share from continuing operations	$ 0.55	$ 0.80	$ 1.10	$ 1.73
Basic earnings per share from discontinued operations	0	0	0	0.17
Basic earnings per share	0.55	0.80	1.10	1.90
Diluted earnings per share from continuing operations	0.55	0.80	1.10	1.72
Diluted earnings per share from discontinued operations	0	0	0	0.17
Diluted earnings per share	$ 0.55	$ 0.80	$ 1.10	$ 1.89
Products and Systems [Member]
Net sales	$ 5,082	$ 4,700	$ 14,119	$ 12,531
Cost of sales	3,549	3,185	9,996	8,655
Services [Member]
Net sales	1,532	1,641	4,455	4,745
Cost of sales	$ 865	$ 959	$ 2,530	$ 2,753