CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2021	Jun. 30, 2021
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Treasury stock, shares	233,353,672	229,115,665
Common Class A
Common stock, shares authorized	1,300,000,000	1,300,000,000
Common stock, shares issued	466,381,223	462,633,034
Common Class B
Common stock, shares authorized	304,000,000	304,000,000
Common stock, shares issued	126,242,029	128,242,029
Common stock, shares outstanding	126,242,029	128,242,029