Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net earnings	$ 1,955	$ 13,200	$ 3,230
Other comprehensive income (loss), net of tax:
Foreign currency translation	400	254	(644)
Pension and postretirement	2	(25)	37
Cash flow hedges	(13)	4	(14)
Total other comprehensive income (loss)	389	233	(621)
Comprehensive income	2,344	13,433	2,609
Less: Noncontrolling interests in comprehensive income of subsidiaries	(9)	(18)	(9)
Comprehensive income common stockholders	$ 2,353	$ 13,451	$ 2,618