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Stock-Based Compensation - Summary of Incentive Equity Awards (Parenthetical) (Detail) (USD $)
In Millions, except Per Share data, unless otherwise specified
3 Months Ended
Sep. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Intrinsic values of stock options exercised $ 18.4
Outstanding "in the money" stock options using current period closing stock price $ 41.63
Shares, outstanding 5.9
Outstanding "in the money" stock options aggregate intrinsic value 121.1
Stock options outstanding, weighted-average remaining contractual life 5 years 8 months 6 days
Stock options exercisable 5.9
Performance-Based Restricted Stock Units And Time-Based Restricted Stock Units [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Intrinsic values of restricted stock units 0.2
Time-Based Restricted Stock Units [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Share price $ 41.63
Shares 1.7
Aggregate intrinsic value 72.2
Performance-Based Restricted Stock Units [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Share price $ 41.63
Shares 0.7
Aggregate intrinsic value $ 28.4