v2.4.0.8
Equity-Based Compensation - Additional Information (Detail) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Jan. 01, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Partnership grant units         164,224,426
Compensation expense in relation to equity-based awards $ 202,800,000 $ 193,600,000 $ 584,353,000 $ 572,134,000  
Tax benefits in relation to equity-based awards 6,300,000 4,300,000 19,900,000 16,000,000  
Estimated unrecognized compensation expense related to unvested awards 788,400,000   788,400,000    
Weighted-average period for recognized compensation expense related to unvested awards, years     1 year 9 months 18 days    
Total vested and unvested outstanding units 1,157,195,487   1,157,195,487    
Phantom Share Units (PSUs)
         
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Total outstanding unvested phantom units 74,414   74,414    
Equity-Based Awards With Performance Conditions
         
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Compensation expense in relation to equity-based awards     $ 105,500,000    
Equity-Based Awards With Performance Conditions | Minimum
         
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Performance period of equity-based awards, in years     3 years    
Equity-Based Awards With Performance Conditions | Maximum
         
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Performance period of equity-based awards, in years     5 years