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

Annual report pursuant to Section 13 and 15(d)

PENSIONS AND OTHER POSTRETIREMENT BENEFITS (Fair Values of Pension Plan Assets) (Details)

PENSIONS AND OTHER POSTRETIREMENT BENEFITS (Fair Values of Pension Plan Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	$ 215.6	$ 202.4	$ 193.4
Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	749.8	685.8	700.6
Equity Securities [Member] \| U S Large Cap [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	130.1	144.7	听
Equity Securities [Member] \| U S Small Mid Cap [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	35.5	39.9	听
Equity Securities [Member] \| International [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	160.9	111.8	听
Fixed Income Investments [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	202.4	181.2	听
Hedge Funds [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	37.4	40.6	40.7
Hedge Funds [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	37.4	40.6	听
Private Equity Funds [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	39.8	36.1	33.1
Private Equity Funds [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	39.8	36.1	听
Structured Finance [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	72.9	63.8	62.1
Structured Finance [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	72.9	63.8	听
Real Estate [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	65.5	61.9	$ 57.5
Real Estate [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	65.5	61.9	听
Cash [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	5.3	5.8	听
Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	505.4	459.7	听
Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member] \| Equity Securities [Member] \| U S Large Cap [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	130.1	144.7	听
Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member] \| Equity Securities [Member] \| U S Small Mid Cap [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	35.5	39.9	听
Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member] \| Equity Securities [Member] \| International [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	160.9	111.8	听
Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member] \| Fixed Income Investments [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	173.6	157.5	听
Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member] \| Hedge Funds [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	0.0	0.0	听
Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member] \| Private Equity Funds [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	0.0	0.0	听
Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member] \| Structured Finance [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	0.0	0.0	听
Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member] \| Real Estate [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	0.0	0.0	听
Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member] \| Cash [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	5.3	5.8	听
Fair Value, Inputs, Level 2 [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	28.8	23.7	听
Fair Value, Inputs, Level 2 [Member] \| Equity Securities [Member] \| U S Large Cap [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	0.0	0.0	听
Fair Value, Inputs, Level 2 [Member] \| Equity Securities [Member] \| U S Small Mid Cap [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	0.0	0.0	听
Fair Value, Inputs, Level 2 [Member] \| Equity Securities [Member] \| International [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	0.0	0.0	听
Fair Value, Inputs, Level 2 [Member] \| Fixed Income Investments [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	28.8	23.7	听
Fair Value, Inputs, Level 2 [Member] \| Hedge Funds [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	0.0	0.0	听
Fair Value, Inputs, Level 2 [Member] \| Private Equity Funds [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	0.0	0.0	听
Fair Value, Inputs, Level 2 [Member] \| Structured Finance [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	0.0	0.0	听
Fair Value, Inputs, Level 2 [Member] \| Real Estate [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	0.0	0.0	听
Fair Value, Inputs, Level 2 [Member] \| Cash [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	0.0	0.0	听
Significant Unobservable Inputs (Level 3) [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	215.6	202.4	听
Significant Unobservable Inputs (Level 3) [Member] \| Equity Securities [Member] \| U S Large Cap [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	0.0	0.0	听
Significant Unobservable Inputs (Level 3) [Member] \| Equity Securities [Member] \| U S Small Mid Cap [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	0.0	0.0	听
Significant Unobservable Inputs (Level 3) [Member] \| Equity Securities [Member] \| International [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	0.0	0.0	听
Significant Unobservable Inputs (Level 3) [Member] \| Fixed Income Investments [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	0.0	0.0	听
Significant Unobservable Inputs (Level 3) [Member] \| Hedge Funds [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	37.4	40.6	听
Significant Unobservable Inputs (Level 3) [Member] \| Private Equity Funds [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	39.8	36.1	听
Significant Unobservable Inputs (Level 3) [Member] \| Structured Finance [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	72.9	63.8	听
Significant Unobservable Inputs (Level 3) [Member] \| Real Estate [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	65.5	61.9	听
Significant Unobservable Inputs (Level 3) [Member] \| Cash [Member] \| Pension Benefits [Member]	听	听	听
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	听	听	听
Fair value of plan assets	$ 0.0	$ 0.0	听