Equity Method Investment and Note Receivable - Summarized Financial Information (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Schedule of Equity Method Investments [Line Items]
Current assets	$ 13,819				$ 8,506				$ 13,819	$ 8,506
Current liabilities	5,032				7,777				5,032	7,777
Gross profit	2,012	$ 1,994	$ 1,801	$ 1,620	1,829	$ 1,586	$ 1,476	$ 1,415	7,427	6,306
Income (loss) from continuing operations									2,127	1,883	$ 1,416
Net income (loss)									13,200	3,230	2,327
Net income (loss) attributable to shareholders	744	$ 9,352	$ 792	$ 2,331	$ 740	$ 921	$ 674	$ 896	13,219	$ 3,231	$ 2,303
Copeland | Equity Method Investment, Nonconsolidated Investee or Group of Investees
Schedule of Equity Method Investments [Line Items]
Current assets	1,737								1,737
Noncurrent assets	13,818								13,818
Current liabilities	1,371								1,371
Noncurrent liabilities	8,007								8,007
Noncontrolling interests	$ 215								215
Net sales									1,677
Gross profit									479
Income (loss) from continuing operations									(442)
Net income (loss)									(442)
Net income (loss) attributable to shareholders									$ (442)