Commitments and Contingencies (Unrecorded Purchase Obligation) (Details) $ in Millions	Sep. 30, 2020 USD ($)
Unrecorded Unconditional Purchase Obligation [Line Items]
Remainder of 2020	$ 304.2
2021	564.5
2022	262.6
2023	127.8
2024	73.0
2025	66.9
Thereafter	743.8
Total	2,142.8
Network and connectivity commitments
Unrecorded Unconditional Purchase Obligation [Line Items]
Remainder of 2020	45.5
2021	99.8
2022	70.3
2023	44.9
2024	38.5
2025	37.0
Thereafter	714.7
Total	1,050.7
Programming commitments
Unrecorded Unconditional Purchase Obligation [Line Items]
Remainder of 2020	108.9
2021	233.9
2022	139.7
2023	47.5
2024	14.9
2025	14.5
Thereafter	16.8
Total	576.2
Purchase commitments
Unrecorded Unconditional Purchase Obligation [Line Items]
Remainder of 2020	147.8
2021	227.8
2022	49.6
2023	33.6
2024	18.2
2025	15.0
Thereafter	11.2
Total	503.2
Other commitments
Unrecorded Unconditional Purchase Obligation [Line Items]
Remainder of 2020	2.0
2021	3.0
2022	3.0
2023	1.8
2024	1.4
2025	0.4
Thereafter	1.1
Total	12.7
U.K. J.V. Entities
Unrecorded Unconditional Purchase Obligation [Line Items]
Remainder of 2020	607.0
2021	1,210.2
2022	360.2
2023	14.6
2024	4.4
2025	3.7
Thereafter	16.4
Total	$ 2,216.5

Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121559207&loc=d3e25336-109308

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+ References

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Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121559207&loc=d3e25336-109308

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Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in remainder of current fiscal year.

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