Retirement Plans (Tables)

3 Months Ended

Dec. 31, 2023

Retirement Benefits [Abstract]

Schedule of Net Periodic Benefit Cost

The following table contains the components of net periodic benefit cost:

	Three Months Ended December 31,
(in millions)	2023		2022
Service cost	$	1	$	1
Interest cost	5		4
Expected return on plan assets	(3)		(3)
Net actuarial and settlement/curtailment (gain) loss	—		8
Net periodic benefit cost	$	3	$	10