Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Operating Activities of Continuing Operations
Net income attributable to Johnson Controls	$ 118	$ 381
Income attributable to noncontrolling interests	38	38
Net income	156	419
Adjustments to reconcile net income to cash provided (used) by operating activities:
Depreciation and amortization	203	224
Pension and postretirement benefit income	(6)	(82)
Pension and postretirement contributions	(9)	(41)
Equity in earnings of partially-owned affiliates, net of dividends received	(56)	(18)
Deferred income taxes	(92)	(32)
Noncash restructuring and impairment charges	294	0
Equity-based compensation	30	29
Other - net	(27)	(28)
Changes in assets and liabilities, excluding acquisitions and divestitures:
Accounts receivable	(88)	(75)
Inventories	(348)	(376)
Other assets	(68)	(63)
Restructuring reserves	14	19
Accounts payable and accrued liabilities	(338)	333
Accrued income taxes	39	83
Cash provided (used) by operating activities from continuing operations	(296)	392
Investing Activities of Continuing Operations
Capital expenditures	(134)	(135)
Sale of property, plant and equipment	27	7
Acquisition of businesses, net of cash acquired	(79)	(108)
Business divestitures, net of cash divested	0	16
Changes in long-term investments	(3)	2
Cash used by investing activities from continuing operations	(189)	(218)
Financing Activities of Continuing Operations
Increase in short-term debt - net	267	394
Increase in long-term debt	154	0
Stock repurchases and retirements	(154)	(526)
Payment of cash dividends	(241)	(191)
Employee equity-based compensation withholding taxes	(30)	(47)
Other - net	13	13
Cash provided (used) by financing activities from continuing operations	9	(357)
Discontinued Operations
Cash used by operating activities	0	(4)
Cash used by discontinued operations	0	(4)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(14)	67
Decrease in cash, cash equivalents and restricted cash	(490)	(120)
Cash, cash equivalents and restricted cash at beginning of period	2,066	1,342
Cash, cash equivalents and restricted cash at end of period	1,576	1,222
Less: Restricted cash	67	15
Cash and cash equivalents at end of period	$ 1,509	$ 1,207