Summary of Significant Accounting Policies - Reclassifications and Revisions (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017		Dec. 31, 2016		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Restatement
Valuation allowance on the outside basis deferred tax asset related to CWGS, LLC	$ 89,500				$ 102,700				$ 89,500		$ 102,700
Decrease in deferred tax asset due to remeasurement under the 2017 Tax Act									47,000
Assets
Inventories	1,415,915				902,711				1,415,915		902,711		$ 856,327
Total current assets	1,798,907				1,126,162				1,798,907		1,126,162		1,045,461
Deferred tax asset	155,551				24,433				155,551		24,433		6,234
Total assets	2,561,477				1,455,777				2,561,477		1,455,777		1,332,585
Liabilities and stockholders' equity
Deferred revenues and gains, current portion	77,669				71,128				77,669		71,128		65,621
Total current liabilities	1,320,169				868,422				1,320,169		868,422		865,103
Deferred revenues and gains, long-term portion	64,061				57,659				64,061		57,659		56,925
Total liabilities	2,470,640				1,599,914				2,470,640		1,599,914		1,639,744
Additional paid-in capital	49,941				(30,006)				49,941		(30,006)
Retained earnings	6,192				71				6,192		71
Stockholders'/members' equity (deficit) noncontrolling interest	90,837				(144,137)				90,837		(144,137)		(307,159)	$ (250,675)
Stockholders'/ members' equity (deficit)													(307,159)		$ 250,700
Total stockholders' equity attributable to Camping World Holdings, Inc.	56,505				(29,740)				56,505		(29,740)		(307,159)
Non-controlling interests	34,332				(114,397)				34,332		(114,397)
Total liabilities and stockholders' / members' equity (deficit)	2,561,477				1,455,777				2,561,477		1,455,777		1,332,585
Revenue:
Revenue	888,992	$ 1,235,602	$ 1,279,026	$ 881,635	668,903	$ 988,804	$ 1,065,259	$ 796,031	4,285,255		3,518,997		3,278,817
Costs applicable to revenue
Costs applicable to revenue									3,038,916		2,522,574		2,379,790
Income from operations	44,291	110,664	136,521	69,904	32,128	87,572	104,053	55,437	361,380		279,190		240,273
Income before taxes									389,956		206,966		175,649
Net income	(5,494)	83,752	105,093	49,623	11,528	68,247	84,108	37,176	232,974		201,059		174,293
Net income (loss) attributable to non-controlling interests									204,612		9,942
Net income attributable to Camping World Holdings, Inc.	(18,093)	$ 19,589	$ 19,344	$ 7,522	1,586	$ 68,247	$ 84,108	$ 37,176	28,362		191,117		174,293
Class A common stock
Liabilities and stockholders' equity
Stockholders'/members' equity (deficit) noncontrolling interest	$ 367				$ 189				367		189
Costs applicable to revenue
Net income									232,974		11,528
Net income (loss) attributable to non-controlling interests									$ 204,612		$ 9,942
Earnings (loss) per share of Class A common stock (1):
Basic	$ (0.52)	$ 0.66	$ 0.84	$ 0.40	$ 0.08				$ 1.07	[1]	$ 0.08	[1]
Diluted	$ (0.52)	$ 0.66	$ 0.84	$ 0.38	$ 0.07				$ 1.07	[1]	$ 0.07	[1]
Operating Segments
Assets
Total assets	$ 2,258,830				$ 1,381,396				$ 2,258,830		$ 1,381,396		1,277,460
Costs applicable to revenue
Income from operations									370,995		290,631		255,815
Retail
Revenue:
Revenue									4,089,641		3,334,224		3,104,217
Costs applicable to revenue
Costs applicable to revenue									2,957,094		2,443,302		2,298,041
Retail | New vehicles
Revenue:
Revenue									2,435,928		1,862,195		1,603,258
Costs applicable to revenue
Costs applicable to revenue									2,086,229		1,596,863		1,375,163
Retail | Used vehicles
Revenue:
Revenue									668,860		703,326		803,879
Costs applicable to revenue
Costs applicable to revenue									506,093		557,253		647,889
Retail | Finance and insurance, net
Revenue:
Revenue									332,034		228,684		189,270
Retail | Operating Segments
Assets
Total assets	$ 2,078,535				1,228,707				2,078,535		1,228,707		1,138,396
Revenue:
Revenue											3,334,224		3,104,217
Costs applicable to revenue
Costs applicable to revenue											2,443,302		2,298,041
Income from operations									$ 272,624		201,585		175,293
Retail | Operating Segments | New vehicles
Revenue:
Revenue											1,862,195		1,603,258
Costs applicable to revenue
Costs applicable to revenue											1,596,863		1,375,163
Retail | Operating Segments | Used vehicles
Revenue:
Revenue											703,326		803,879
Costs applicable to revenue
Costs applicable to revenue											557,253		647,889
Retail | Operating Segments | Finance and insurance, net
Revenue:
Revenue											228,684		189,270
As Reported
Assets
Inventories					909,254						909,254		861,847
Total current assets					1,132,705						1,132,705		1,050,981
Deferred tax asset					125,878						125,878		6,234
Total assets					1,563,765						1,563,765		1,338,105
Liabilities and stockholders' equity
Deferred revenues and gains, current portion					68,643						68,643		63,616
Total current liabilities					865,937						865,937		863,098
Deferred revenues and gains, long-term portion					52,210						52,210		52,151
Total liabilities					1,591,980						1,591,980		1,632,965
Additional paid-in capital					74,239						74,239
Retained earnings					544						544
Stockholders'/members' equity (deficit) noncontrolling interest					(28,215)						(28,215)
Stockholders'/ members' equity (deficit)													(294,860)	242,600
Total stockholders' equity attributable to Camping World Holdings, Inc.					74,978						74,978		(294,860)
Non-controlling interests					(103,193)						(103,193)
Total liabilities and stockholders' / members' equity (deficit)					1,563,765						1,563,765		1,338,105
Revenue:
Revenue											3,526,706		3,286,094
Costs applicable to revenue
Costs applicable to revenue											2,528,105		2,382,830
Income from operations											281,368		244,510
Income before taxes											209,144		179,886
Net income											203,237		178,530
Net income (loss) attributable to non-controlling interests											11,576
Net income attributable to Camping World Holdings, Inc.											$ 191,661		178,530
As Reported | Class A common stock
Earnings (loss) per share of Class A common stock (1):
Basic											$ 0.11
Diluted											$ 0.09
As Reported | Retail | Operating Segments
Revenue:
Revenue											$ 3,341,933		3,111,494
Costs applicable to revenue
Costs applicable to revenue											2,448,833		2,301,081
Income from operations											203,800		179,500
As Reported | Retail | Operating Segments | New vehicles
Revenue:
Revenue											1,866,182		1,606,465
Costs applicable to revenue
Costs applicable to revenue											1,604,534		1,379,156
As Reported | Retail | Operating Segments | Used vehicles
Revenue:
Revenue											705,893		806,399
Costs applicable to revenue
Costs applicable to revenue											555,113		646,936
As Reported | Retail | Operating Segments | Finance and insurance, net
Revenue:
Revenue											229,839		190,820
Adjustment
Assets
Inventories					(6,543)						(6,543)		(5,520)
Total current assets					(6,543)						(6,543)		(5,520)
Deferred tax asset					(101,445)						(101,445)
Total assets					(107,988)						(107,988)		(5,520)
Liabilities and stockholders' equity
Deferred revenues and gains, current portion					2,485						2,485		2,005
Total current liabilities					2,485						2,485		2,005
Deferred revenues and gains, long-term portion					5,449						5,449		4,774
Total liabilities					7,934						7,934		6,779
Additional paid-in capital					(104,245)						(104,245)
Retained earnings					(473)						(473)
Stockholders'/members' equity (deficit) noncontrolling interest					(115,922)						(115,922)
Stockholders'/ members' equity (deficit)													(12,299)	$ 8,100
Total stockholders' equity attributable to Camping World Holdings, Inc.					(104,718)						(104,718)		(12,299)
Non-controlling interests					(11,204)						(11,204)
Total liabilities and stockholders' / members' equity (deficit)					(107,988)						(107,988)		(5,520)
Revenue:
Revenue											(7,709)		(7,277)
Costs applicable to revenue
Costs applicable to revenue											(5,531)		(3,040)
Income from operations											(2,178)		(4,237)
Income before taxes											(2,178)		(4,237)
Net income											(2,178)		(4,237)
Net income (loss) attributable to non-controlling interests											(1,634)
Net income attributable to Camping World Holdings, Inc.											$ (544)		(4,237)
Adjustment | Class A common stock
Earnings (loss) per share of Class A common stock (1):
Basic											$ (0.03)
Diluted											$ (0.02)
Adjustment | Retail | Operating Segments
Assets
Total assets					$ (5,300)						$ (5,300)		5,500
Revenue:
Revenue											(7,709)		(7,277)
Costs applicable to revenue
Costs applicable to revenue											(5,531)		(3,040)
Income from operations											2,200		4,200
Adjustment | Retail | Operating Segments | New vehicles
Revenue:
Revenue											(3,987)		(3,207)
Costs applicable to revenue
Costs applicable to revenue											(7,671)		(3,993)
Adjustment | Retail | Operating Segments | Used vehicles
Revenue:
Revenue											(2,567)		(2,520)
Costs applicable to revenue
Costs applicable to revenue											2,140		953
Adjustment | Retail | Operating Segments | Finance and insurance, net
Revenue:
Revenue											$ (1,155)		$ (1,550)

[1] Basic and diluted earnings per Class A common stock is applicable only for periods after the Company’s IPO. See Note 21 — Earnings Per Share.