Commitments and Contingencies (Unrecorded Purchase Obligation) (Details) $ in Millions	Jun. 30, 2017 USD ($)
Unrecorded Unconditional Purchase Obligation [Line Items]
Remainder of 2017	$ 2,419.9
2018	1,979.4
2019	1,322.8
2020	786.6
2021	482.9
2022	192.1
Thereafter	1,233.2
Total	8,416.9
Network and Connectivity Commitments [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Remainder of 2017	773.7
2018	448.6
2019	364.7
2020	276.0
2021	251.2
2022	69.3
Thereafter	887.7
Total	3,071.2
Programming Commitments [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Remainder of 2017	622.1
2018	1,093.5
2019	600.8
2020	244.2
2021	74.5
2022	37.6
Thereafter	61.4
Total	2,734.1
Purchase Commitments [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Remainder of 2017	900.2
2018	292.6
2019	242.3
2020	176.9
2021	83.4
2022	22.6
Thereafter	62.2
Total	1,780.2
Operating Leases [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Remainder of 2017	75.0
2018	120.6
2019	100.9
2020	80.7
2021	65.8
2022	54.6
Thereafter	214.4
Total	712.0
Other Commitments [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Remainder of 2017	48.9
2018	24.1
2019	14.1
2020	8.8
2021	8.0
2022	8.0
Thereafter	7.5
Total	$ 119.4