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Share-Based Compensation - Schedule of Share-Based Compensation Arrangement by Share Based Payment Award Options Outstanding and Options Exercisable (Detail)
shares in Millions
12 Months Ended
Jun. 30, 2017
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Outstanding at June 30,2016, Option outstanding | shares 8.0
Average remaining contractual life (years), Options outstanding 3 years 9 months 22 days
Weighted average exercise price, Options outstanding $ 24.67
Exercisable at June 30, 2016, Options exercisable | shares 7.5
Weighted average exercise price, Options exercisable $ 24.55
$ 13.28 - 21.66 [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Range of exercise prices, minimum 13.28
Range of exercise prices, maximum $ 21.66
Outstanding at June 30,2016, Option outstanding | shares 2.1
Average remaining contractual life (years), Options outstanding 3 years 8 months 23 days
Weighted average exercise price, Options outstanding $ 18.66
Exercisable at June 30, 2016, Options exercisable | shares 2.1
Weighted average exercise price, Options exercisable $ 18.66
$ 21.73 - 26.49 [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Range of exercise prices, minimum 21.73
Range of exercise prices, maximum $ 26.49
Outstanding at June 30,2016, Option outstanding | shares 3.2
Average remaining contractual life (years), Options outstanding 3 years 8 months 19 days
Weighted average exercise price, Options outstanding $ 25.42
Exercisable at June 30, 2016, Options exercisable | shares 2.7
Weighted average exercise price, Options exercisable $ 25.23
$ 27.07 - 30.12 [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Range of exercise prices, minimum 27.07
Range of exercise prices, maximum $ 30.12
Outstanding at June 30,2016, Option outstanding | shares 2.2
Average remaining contractual life (years), Options outstanding 4 years 4 months 20 days
Weighted average exercise price, Options outstanding $ 27.81
Exercisable at June 30, 2016, Options exercisable | shares 2.2
Weighted average exercise price, Options exercisable $ 27.81
$ 30.34 - 37.73 [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Range of exercise prices, minimum 30.34
Range of exercise prices, maximum $ 37.73
Outstanding at June 30,2016, Option outstanding | shares 0.5
Average remaining contractual life (years), Options outstanding 2 years 3 months 8 days
Weighted average exercise price, Options outstanding $ 30.46
Exercisable at June 30, 2016, Options exercisable | shares 0.5
Weighted average exercise price, Options exercisable $ 30.44