Stock Incentive Plans - Stock appreciation rights activity (Details) - Stock Appreciation Rights (SARs) $ / shares in Units, $ in Millions	12 Months Ended
	Jun. 30, 2021 USD ($) $ / shares shares
Number of Shares
Beginning balance, outstanding (in shares) | shares	5,183,970
Granted (in shares) | shares	741,852
Exercised (in shares) | shares	(1,741,352)
Canceled (in shares) | shares	(35,884)
Ending balance, outstanding (in shares) | shares	4,148,586
Exercisable (in shares) | shares	2,677,757
Weighted-Average Exercise Price
Beginning balance, outstanding (in USD per share) | $ / shares	$ 132.42
Granted (in USD per share) | $ / shares	209.56
Exercised (in USD per share) | $ / shares	116.51
Canceled (in USD per share) | $ / shares	185.29
Ending balance, outstanding (in USD per share) | $ / shares	152.44
Exercisable (in USD per share) | $ / shares	$ 134.55
Weighted Average Remaining Contractual Term and Aggregate Intrinsic Value
Outstanding, weighted average remaining contractual term	6 years 3 months 18 days
Exercisable, weighted average remaining contractual term	5 years 1 month 6 days
Outstanding, aggregate intrinsic value | $	$ 641.7
Exercisable, aggregate intrinsic value | $	$ 462.1