Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Income Tax Disclosure [Abstract]
Income tax expense	$ 22	$ 32	$ 153	$ 128
Income before income tax expense	$ 64	$ 91	436	347
Gross income tax paid			110	114
Income tax refunds			$ 9	$ 13