Share-Based Compensation - Schedule of Share-Based Compensation Arrangement by Share Based Payment Award Options Outstanding (Detail) shares in Millions	9 Months Ended
	Mar. 31, 2016 $ / shares shares
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Options outstanding at beginning of period, Number of shares | shares	12.5
Options granted, Number of shares | shares	0.0
Options exercised, Number of shares | shares	(4.1)
Options canceled or expired, Number of shares | shares	0.0
Options outstanding at end of year, Number of shares | shares	8.4
Options exercisable at end of period, Number of shares | shares	6.9
Options outstanding at beginning of period, Weighted average exercise price | $ / shares	$ 23.49
Options granted, Weighted average exercise price | $ / shares	0
Options exercised, Weighted average exercise price | $ / shares	21.39
Options canceled or expired, Weighted average exercise price | $ / shares	0
Options outstanding at end of year, Weighted average exercise price | $ / shares	24.51
Options exercisable at end of period, Weighted average exercise price | $ / shares	$ 24.02