Equity-Based Compensation - Summary of Activity from Continuing and Discontinued Operations Related to Target PSUs and RSUs Settled in Shares (Parenthetical) (Detail) - USD ($) shares in Thousands, $ in Millions		12 Months Ended
		Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares, Granted	[1]	5,445	3,510	4,502
Number of shares, Cancelled	[2]	972	1,354	1,236
Fair value of PSUs and RSUs vested during the period		$ 52	$ 25	$ 44
Intrinsic value of unvested RSUs and target PSUs		$ 139
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares, Cancelled		100	100	100
Restricted Stock Units [Member] | Settled in Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares, Granted		1,100	300	400
Performance Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares, Granted		6,000	4,400	5,500
Payout adjustment of performance share units		300	700	400
Performance Stock Units [Member] | 2018 Fiscal [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payout adjustment of performance share units		500
Performance Stock Units [Member] | Settled in Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares, Granted		3,800	3,200	4,100
Payout adjustment of performance share units		600	600	700

[1] For fiscal 2019, includes 3.8 million target PSUs and 1.1 million RSUs granted and a payout adjustment of 0.5 million PSUs due to the actual performance level achieved for PSUs granted in fiscal 2018 that vested during fiscal 2019. For fiscal 2018, includes 3.2 million target PSUs and 0.3 million RSUs granted. For fiscal 2017, includes 4.1 million target PSUs and 0.4 million RSUs granted.

[2] For fiscal 2019, includes 0.6 million of target PSUs and 0.1 million RSUs cancelled and a payout adjustment of 0.7 million PSUs due to the actual performance level achieved for PSUs granted in fiscal 2016 that vested during fiscal 2019. For fiscal 2018, includes 0.6 million of target PSUs and 0.1 million RSUs cancelled and a payout adjustment of 0.7 million PSUs due to the actual performance level achieved for PSUs granted in fiscal 2015 that vested during fiscal 2018. For fiscal 2017, includes 0.7 million of target PSUs and 0.1 million RSUs cancelled and a payout adjustment of 0.4 million PSUs due to the actual performance level achieved for PSUs granted in fiscal 2014 that vested during fiscal 2017.