Stock Incentive Plans - Stock appreciation rights activity (Details) - Stock Appreciation Rights (SARs) $ / shares in Units, $ in Millions	12 Months Ended
Jun. 30, 2020 USD ($) $ / shares shares
Number of Shares
Beginning balance, outstanding (in shares) \| shares	5,749,455
Granted (in shares) \| shares	815,035
Exercised (in shares) \| shares	(1,341,539)
Canceled (in shares) \| shares	(38,981)
Ending balance, outstanding (in shares) \| shares	5,183,970
Exercisable (in shares) \| shares	3,644,468
Weighted-Average Exercise Price
Beginning balance, outstanding (in USD per share) \| $ / shares	$ 119.29
Granted (in USD per share) \| $ / shares	158.90
Exercised (in USD per share) \| $ / shares	91.37
Canceled (in USD per share) \| $ / shares	161.10
Ending balance, outstanding (in USD per share) \| $ / shares	132.42
Exercisable (in USD per share) \| $ / shares	$ 120.28
Weighted Average Remaining Contractual Term and Aggregate Intrinsic Value
Outstanding, weighted average remaining contractual term	6 years
Exercisable, weighted average remaining contractual term	5 years
Outstanding, aggregate intrinsic value \| $	$ 263.6
Exercisable, aggregate intrinsic value \| $	$ 229.6

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Number of share options (or share units) exercised during the current period.

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