星空传媒 Inc. Annual report pursuant to Section 13 and 15(d)

STOCK COMPENSATION PLANS (Narrative) (Details)

STOCK COMPENSATION PLANS (Narrative) (Details)	12 Months Ended
STOCK COMPENSATION PLANS (Narrative) (Details)	Dec. 31, 2016 USD ($) Agreement Plan shares	Dec. 31, 2015 USD ($) $ / shares shares	Dec. 31, 2014 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	听	听	听
Share-based Compensation Arrangement by Share-based Payment Award, Number of Plans \| Plan	2	听	听
Allocated Share-based Compensation Expense \| $	$ 14,200,000	$ 13,900,000	$ 21,500,000
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense \| $	$ 0	$ 0	$ 7,500,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Plan Year Agreements \| Agreement	3	听	听
Number of performance shares granted	3,571,337	听	听
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized \| $	$ 14,700,000	听	听
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	1 year 9 months 15 days	听	听
Option Indexed to Issuer's Equity, Strike Price \| $ / shares	听	$ 13.83	听
Common Stock, Shares Authorized	400,000,000	400,000,000	听
2015 Equity Plan [Member]	听	听	听
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	听	听	听
Performance/vesting period	27 months	听	听
2015 Equity Plan [Member] \| Maximum [Member]	听	听	听
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	听	听	听
Maximum number of shares that may be issued (in shares)	12,900,000	听	听
Two Thousand Twelve Equity Plan and Amended Equity Plan [Member]	听	听	听
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	听	听	听
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Available for Issuance Proposed to be added to the Plan	5,000,000	听	听
Directors Plan [Member]	听	听	听
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	听	听	听
Deferred Compensation Arrangement with Individual, Fair Value of Shares Issued \| $	$ 85,000	听	听
2012 Equity Plan [Member]	听	听	听
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	听	听	听
Performance/vesting period	3 years	听	听
Number of shares granted under the award	900,000	听	听
Number of performance shares granted	900,000	听	听
Number of restricted shares granted	400,000	听	听
Change in Control [Member]	听	听	听
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	听	听	听
Allocated Share-based Compensation Expense \| $	听	$ 11,700,000	听
2015 to 2017 Performance Period [Member] \| 2012 Equity Plan [Member] \| Minimum [Member]	听	听	听
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	听	听	听
Payout rate, as a percentage of the original grant	0.00%	听	听
2015 to 2017 Performance Period [Member] \| 2012 Equity Plan [Member] \| Maximum [Member]	听	听	听
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	听	听	听
Payout rate, as a percentage of the original grant	200.00%	听	听
Restricted Stock Units (RSUs) [Member] \| 2015 Equity Plan [Member]	听	听	听
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	听	听	听
Performance/vesting period	3 years	听	听
Number of restricted shares granted	3,400,000	1,500,000	听
Cliffs Natural Resource Inc. 2015 Employee Stock Purchase Plan [Member]	听	听	听
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	听	听	听
Common Stock, Shares Authorized	10,000,000	听	听