Income taxes	6 Months Ended
	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Income taxes	Income taxesWe file income tax returns in the United States and in various foreign jurisdictions. In the normal course of business, we are subject to examination by taxing authorities throughout the world. We are open to assessment on our U.S. federal income tax returns by the Internal Revenue Service for fiscal years after 2013, and our state and local returns for fiscal years after 2016. We are also open to assessment for significant foreign jurisdictions for fiscal years after 2011. Unrecognized tax benefits reflect the difference between positions taken or expected to be taken on income tax returns and the amounts reflected in the financial statements. As of December 31, 2021, we had gross unrecognized tax benefits of $100 million, all of which, if recognized, would impact the effective tax rate. The accrued interest related to the gross unrecognized tax benefits, excluded from the amount above, is $20 million. It is reasonably possible that within the next 12 months the amount of gross unrecognized tax benefits could be reduced by up to approximately $40 million as a result of the revaluation of existing uncertain tax positions arising from developments in the examination process or the closure of tax statutes. Any increase in the amount of gross unrecognized tax benefits within the next 12 months is expected to be insignificant.