Income Taxes Reconciliation Between Statutory Federal Income Tax Rate and Effective Tax Rate (Detail)	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Reconciliation of Federal Statutory Tax Rates (as a percent)
U.S. Statutory Tax Rate	35.00%		35.00%		35.00%
Increase (Decrease) Due to State and Local Taxes	5.30%		6.80%		13.10%
Rate Benefits as a Limited Liability Company/Flow Through	(7.00%)		(6.90%)		(5.70%)
Foreign Taxes	3.20%		2.20%		4.30%
Non-Deductible Expenses	3.40%	[1]	9.40%	[1]	17.10%	[1]
Valuation Allowances	0.00%		(2.00%)		(0.90%)
Write Down of Deferred Tax Asset	6.80%		1.60%		0.00%
Other Adjustments	(0.70%)		(2.20%)		(1.00%)
Effective Income Tax Rate	46.00%		43.90%		61.90%

[1] (1)Primarily related to non-deductible share-based compensation expense.