CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2021	Jun. 30, 2021
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 74,000	$ 77,518
Accumulated depreciation and amortization	$ 857,096	$ 842,861
Common stock, stated value per share (in usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	800,000,000	800,000,000
Common stock, shares issued (in shares)	209,853,951	216,655,616
Treasury stock, shares (in shares)	34,342,194	34,842,125