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Schedule of Share-Based Compensation Arrangement by Share Based Payment Award Options Outstanding (Detail) (USD $)
 3 Months Ended
Sep. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Options outstanding at beginning of period, Number of shares 14,238,603
Options granted, Number of shares 1,000
Options exercised, Number of shares 705,944
Options canceled or expired, Number of shares 83,785
Options outstanding at end of period, Number of shares 13,449,874
Options outstanding at beginning of period, Weighted average exercise price $ 23.30
Options granted, Weighted average exercise price $ 37.17
Options exercised, Weighted average exercise price $ 21.39
Options canceled or expired, Weighted average exercise price $ 24.41
Options outstanding at end of period, Weighted average exercise price $ 23.39