SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 2) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2015 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($) arrangement	Dec. 31, 2013 USD ($) arrangement	Oct. 01, 2015 USD ($)
Intangible Assets and Goodwill
Write-down of goodwill		$ 14,056	$ 0	$ 0
Advertising Costs
Advertising expense		$ 1,200,000	$ 994,700	$ 850,400
Amortization period for capitalized access fees (in months)		18 months
Redeemable Noncontrolling Interest
Number of put and call arrangements that became exercisable | arrangement			0	2
Adjustment of redeemable noncontrolling interests and noncontrolling interests to fair value		$ 23,155	$ 27,750	$ 40,638
Minimum
Intangible Assets and Goodwill
Royalty rates used for impairment assessment of indefinite-lived intangible assets (as a percent)		1.00%	1.00%
Maximum
Intangible Assets and Goodwill
Royalty rates used for impairment assessment of indefinite-lived intangible assets (as a percent)		9.00%	9.00%
Indefinite-lived Intangible Assets | Minimum
Intangible Assets and Goodwill
Discount rate		11.00%	10.00%
Indefinite-lived Intangible Assets | Maximum
Intangible Assets and Goodwill
Discount rate		16.00%	20.00%
Goodwill | Minimum
Intangible Assets and Goodwill
Discount rate		12.00%	13.00%
Goodwill | Maximum
Intangible Assets and Goodwill
Discount rate		22.00%	19.00%
Operating Segments
Intangible Assets and Goodwill
Write-down of goodwill		$ 14,056
Nonoperating Income (Expense)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax [Abstract]
Translation gains and losses related to foreign entities		2,200
Publishing | Operating Segments
Intangible Assets and Goodwill
Write-down of indefinite-lived intangible assets		88,000
Write-down of goodwill		0
Publishing | Operating Segments | Minimum
Intangible Assets and Goodwill
Hypothetical amount of carrying value in excess of fair value, effect of 10 percent decrease in estimated fair value					$ 20,000
Publishing | Operating Segments | Maximum
Intangible Assets and Goodwill
Hypothetical amount of carrying value in excess of fair value, effect of 20 percent decrease in estimated fair value					60,000
Other | Operating Segments
Intangible Assets and Goodwill
Write-down of goodwill	$ 14,100	14,056
Other | ShoeBuy | Operating Segments
Intangible Assets and Goodwill
Write-down of goodwill		$ 14,056
Other | ShoeBuy | Operating Segments | Minimum
Intangible Assets and Goodwill
Hypothetical amount of carrying value in excess of fair value, effect of 10 percent decrease in estimated fair value					1,000
Other | ShoeBuy | Operating Segments | Maximum
Intangible Assets and Goodwill
Hypothetical amount of carrying value in excess of fair value, effect of 20 percent decrease in estimated fair value					$ 5,000