Restructuring - Restructuring Activities and Related Reserves (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Jun. 30, 2024
Restructuring Cost and Reserve [Line Items]
Reserve balance	$ 4	$ 2	$ 0	$ 0
Charges	1	3	9	13
Costs charged against assets			(6)
Cash paid	(3)	(1)	(1)
Reserve balance	2	4	2	2
Severance and Employee Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Reserve balance	3	2	0	0
Charges		2	3
Cash paid	(2)	(1)	(1)
Reserve balance	1	3	2	1
Accelerated Depreciation on Assets [Member]
Restructuring Cost and Reserve [Line Items]
Reserve balance			0	0
Charges, Accelerated depreciation on assets			6
Costs charged against assets			$ (6)
Other [Member]
Restructuring Cost and Reserve [Line Items]
Reserve balance	1
Charges	1	1
Cash paid	(1)
Reserve balance	$ 1	$ 1		$ 1