Equity-Based Compensation - Summary of Stock Option Transactions (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Share-based Payment Arrangement [Abstract]
Options, Outstanding at the beginning of the year	335	473	666
Options, Exercised	(103)	(136)	(189)
Options, Cancelled	0	(2)	(4)
Options, Outstanding at the end of the year	232	335	473
Options, Exercisable at the end of the year	232	335	470
Weighted average exercise price, Outstanding at the beginning of the year	$ 8.04	$ 7.61	$ 7.74
Weighted average exercise price, Exercised	8.25	6.58	8.04
Weighted average exercise price, Cancelled	0	5.90	9.04
Weighted average exercise price, Outstanding at the end of the year	$ 8.45	$ 8.04	$ 7.61
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value	$ 1	$ 1	$ 1

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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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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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Weighted average price of options that were either forfeited or expired.

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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 option holders acquired shares when converting their stock options into shares.

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

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