Summary of Significant Accounting Policies - Additional Information (Detail)	3 Months Ended		12 Months Ended
	Dec. 31, 2016 USD ($) Entity	Dec. 31, 2015 USD ($)	Dec. 31, 2016 USD ($) Entity	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Mar. 31, 2015	Feb. 28, 2014	Mar. 18, 2013
Significant Accounting Policies [Line Items]
Number of consolidated joint ventures | Entity	15		15
Allowance for doubtful accounts	$ 19,400,000	$ 8,400,000	$ 19,400,000	$ 8,400,000
Derivative instruments, fair value	0	0	0	0
Impairment of long-lived assets			0	0	$ 0
Non-cash impairment charge	18,300,000	35,100,000	18,331,000	35,132,000	0
Impairment of intangible assets, indefinite-lived	424,900,000	402,400,000	424,890,000	402,392,000	0
Advertising expenses			31,800,000	32,300,000	$ 29,700,000
Reduction in Redeemable non-controlling interest	(56,729,000)	(48,646,000)	(56,729,000)	(48,646,000)
Addition in non-controlling interest	$ 119,291,000	125,371,000	$ 119,291,000	125,371,000
Restatement Adjustment
Significant Accounting Policies [Line Items]
Reduction in Redeemable non-controlling interest		21,300,000		21,300,000
Addition in non-controlling interest		21,300,000		21,300,000
ASU 2015-17
Significant Accounting Policies [Line Items]
Reclassification of net current deferred tax assets to net non-current deferred tax liability				2,400,000
ASU 2015-03
Significant Accounting Policies [Line Items]
Unamortized debt issuance costs previously recorded as other assets		$ 15,000,000		$ 15,000,000
Minimum
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life			3 years
Finite-lived intangible assets, useful life			1 year
Maximum
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life			7 years
Finite-lived intangible assets, useful life			15 years
Convertible Notes | 1.50% Senior Subordinated Notes Due March 15, 2018
Significant Accounting Policies [Line Items]
Debt instrument, interest rate, stated percentage	1.50%	1.50%	1.50%	1.50%	1.50%			1.50%
Sales Revenue, Services, Net | Customer One | Customer Concentration Risk
Significant Accounting Policies [Line Items]
Concentration risk, percentage			13.00%	14.00%	14.00%
Accounts Receivable | Customer One | Customer Concentration Risk
Significant Accounting Policies [Line Items]
Concentration risk, percentage			11.00%	10.00%
Subsidiaries | Non U.S
Significant Accounting Policies [Line Items]
Cash including restricted cash	$ 68,500,000		$ 68,500,000
Percentage of cash including restricted cash held in foreign subsidiaries	21.00%		21.00%
LC Partners US
Significant Accounting Policies [Line Items]
Interest acquired, including previously acquired interest	100.00%		100.00%
Iconix China
Significant Accounting Policies [Line Items]
Interest acquired, including previously acquired interest		100.00%		100.00%		100.00%
Iconix Latin America
Significant Accounting Policies [Line Items]
Interest acquired, including previously acquired interest							100.00%