Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Income tax expense	$ 94	$ 61	$ 131	$ 96
Income before income tax expense	$ 277	$ 155	372	256
Gross income tax paid			74	81
Income tax refunds			$ 9	$ 1