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Share-Based Compensation - Schedule of Share-Based Compensation Arrangement by Share Based Payment Award Options Outstanding (Detail)
shares in Millions
 6 Months Ended
Dec. 31, 2019
$ / shares
shares
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]  
Options outstanding at beginning of period, Number of shares | shares 5.5
Options granted, Number of shares | shares 0.0
Options exercised, Number of shares | shares (0.4)
Options canceled or expired, Number of shares | shares (0.2)
Options outstanding at end of year, Number of shares | shares 4.9
Options exercisable at end of period, Number of shares | shares 4.9
Options outstanding at beginning of period, Weighted average exercise price | $ / shares $ 24.45
Options granted, Weighted average exercise price | $ / shares 0
Options exercised, Weighted average exercise price | $ / shares 22.83
Options canceled or expired, Weighted average exercise price | $ / shares 29.08
Options outstanding at end of year, Weighted average exercise price | $ / shares 24.40
Options exercisable at end of period, Weighted average exercise price | $ / shares $ 24.40