Consolidated Statements of Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Net sales	$ 7,231	$ 7,133	$ 20,024	$ 19,887
Cost of sales	4,743	4,702	13,363	13,124
Gross profit	2,488	2,431	6,661	6,763
Selling, general and administrative expenses	1,090	1,555	4,854	4,705
Restructuring and impairment costs	106	81	399	844
Net financing charges	71	80	263	218
Equity income	58	78	176	190
Income before income taxes	1,279	793	1,321	1,186
Income tax provision (benefit)	227	(329)	99	(266)
Net income	1,052	1,122	1,222	1,452
Less: Income attributable to noncontrolling interests	77	73	150	152
Net income attributable to Johnson Controls	$ 975	$ 1,049	$ 1,072	$ 1,300
Earnings per share attributable to Johnson Controls
Basic (in dollars per share)	$ 1.45	$ 1.54	$ 1.58	$ 1.90
Diluted (in dollars per share)	$ 1.45	$ 1.53	$ 1.58	$ 1.89
Products and systems
Net sales	$ 5,422	$ 5,431	$ 14,896	$ 15,070
Cost of sales	3,652	3,708	10,273	10,337
Services
Net sales	1,809	1,702	5,128	4,817
Cost of sales	$ 1,091	$ 994	$ 3,090	$ 2,787