v2.4.0.8
Equity-Based Compensation - Additional Information (Detail) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Dec. 31, 2012
Share Based Compensation [Line Items]          
Partnership grant units         163,217,431
Compensation expense in relation to equity-based awards $ 193,600,000 $ 223,600,000 $ 572,134,000 $ 690,617,000  
Tax benefits in relation to equity-based awards 4,300,000 2,300,000 16,000,000 15,000,000  
Estimated unrecognized compensation expense related to unvested awards 1,400,000,000   1,400,000,000    
Weighted-average period for recognized compensation expense related to unvested awards, years     2 years 1 month 6 days    
Total vested and unvested outstanding units 1,149,898,936   1,149,898,936    
Total outstanding unvested phantom units 150,725   150,725    
Equity-Based Awards With Performance Conditions | Minimum
         
Share Based Compensation [Line Items]          
Performance period of equity-based awards, in years     3    
Equity-Based Awards With Performance Conditions | Maximum
         
Share Based Compensation [Line Items]          
Performance period of equity-based awards, in years     5    
Equity-Based Awards With Performance Conditions | Equity Awards
         
Share Based Compensation [Line Items]          
Compensation expense in relation to equity-based awards     $ 57,300,000