Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		15 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2020
Income Tax [Line Items]
Income taxes	$ 158	$ 123	$ 390	$ 399
Effective income tax rate	21.00%	33.00%	21.00%	22.00%
Payroll tax deferral from CARES Act through December 2020					$ 73
Payroll Taxes Paid			$ 37	$ 37
Unfavorable impact of Russia divestiture, percentage impact		12.00%