Quarterly report pursuant to Section 13 or 15(d)

Employee Benefits and Share Option Plans (Detail Textuals)

v2.4.1.9
Employee Benefits and Share Option Plans (Detail Textuals) (USD $)
3 Months Ended 0 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Jan. 08, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total intrinsic value of stock options exercised $ 44,800,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue    
Proceeds from the exercise of share options 51,790,000us-gaap_ProceedsFromStockOptionsExercised 340,000us-gaap_ProceedsFromStockOptionsExercised  
Share-based Compensation 12,005,000us-gaap_ShareBasedCompensation 1,835,000us-gaap_ShareBasedCompensation  
Marketing, general and administrative expense      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Acceleration of certain equity awards of the former President and Chief Executive Officer 8,200,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAcceleratedCompensationCost
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Separation Agreement | Kevin M. Sheehan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Previously approved bonus payment for fiscal year 2014     1,627,500us-gaap_AccruedBonusesCurrentAndNoncurrent
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Severance expense     $ 13,400,000us-gaap_SeveranceCosts1
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