Income Taxes - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax [Line Items]
Deferred tax asset pertaining to basis step-up for payments made under the tax receivable agreement	$ 5,942	$ 6,694
Valuation allowance amount	1,225,305	1,238,765
Net decrease in valuation allowance	13,460
Valuation allowance charged to income tax expense	13,375
Valuation allowance charged to stockholders' equity	22,010
Valuation allowance credited to income tax expense	48,845
Indefinite-lived net operating loss and tax credit carryforwards	74,619
Net operating loss and tax credit carryforwards	266,243
Operating loss and tax credit carryforwards begin to expire	2029
Deferred tax assets pertaining to tax deductions related to equity compensation in excess of compensation recognized for financial reporting	30,200	19,900
Amount of deferred tax assets for unrecognized tax benefits recorded	8,600
Basis step-up assets	652,000
Net operating losses due to amortization of step-up assets	257,000
Provision (benefit) pursuant to tax receivable agreement	1,249	0	429
LFCM Holdings [Member]
Income Tax [Line Items]
Percentage of cash savings required to pay under the tax receivable agreement	85.00%
Tax Basis Step-Up on Certain U.K. Assets [Member]
Income Tax [Line Items]
Deferred tax asset basis adjustments on certain U.K. assets	6,538	16,083
Separation and Recapitalization [Member]
Income Tax [Line Items]
Basis adjustments relating to deferred tax assets for purchases and redemptions of historical and working members interests	123,027	158,459
Exchangeable Interests and Secondary Offerings [Member]
Income Tax [Line Items]
Deferred tax asset basis adjustments as a resulting from exchange of exchangeable interests and secondary offerings	$ 603,552	$ 638,993