CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2025	Sep. 30, 2024
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 42	$ 68
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, shares authorized (in shares)	450,000,000	450,000,000
Common stock, shares issued (in shares)	217,033,282	216,124,332