Commitments and Contingencies (Unrecorded Purchase Obligation) (Details) $ in Millions	Mar. 31, 2021 USD ($)
Unrecorded Unconditional Purchase Obligation [Line Items]
Remainder of 2021	$ 786.0
2022	510.1
2023	234.9
2024	110.1
2025	96.2
2026	62.7
Thereafter	701.3
Total	2,501.3
U.K. J.V. Entities
Unrecorded Unconditional Purchase Obligation [Line Items]
Remainder of 2021	1,415.5
2022	601.1
2023	58.9
2024	5.9
2025	4.6
2026	3.9
Thereafter	16.2
Total	2,106.1
Network and connectivity commitments
Unrecorded Unconditional Purchase Obligation [Line Items]
Remainder of 2021	154.6
2022	89.6
2023	85.5
2024	52.8
2025	50.9
2026	41.7
Thereafter	697.1
Total	1,172.2
Purchase commitments
Unrecorded Unconditional Purchase Obligation [Line Items]
Remainder of 2021	391.5
2022	185.4
2023	47.4
2024	16.0
2025	11.3
2026	5.5
Thereafter	0.0
Total	657.1
Programming commitments
Unrecorded Unconditional Purchase Obligation [Line Items]
Remainder of 2021	205.3
2022	177.7
2023	74.3
2024	39.5
2025	32.5
2026	14.6
Thereafter	2.4
Total	546.3
Other commitments
Unrecorded Unconditional Purchase Obligation [Line Items]
Remainder of 2021	34.6
2022	57.4
2023	27.7
2024	1.8
2025	1.5
2026	0.9
Thereafter	1.8
Total	$ 125.7

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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