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v3.21.1

Segment Reporting (Revenue by Major Category) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Segment Reporting Information [Line Items] |  |
Revenue | $ 3,615.3 | $ 2,875.8
Total residential cable revenue |  |
Segment Reporting Information [Line Items] |  |
Revenue | 2,085.8 | 1,871.1
Total subscription revenue |  |
Segment Reporting Information [Line Items] |  |
Revenue | 2,029.1 | 1,818.1
Broadband internet |  |
Segment Reporting Information [Line Items] |  |
Revenue | 926.8 | 796.8
Video |  |
Segment Reporting Information [Line Items] |  |
Revenue | 745.1 | 683.1
Fixed-line telephony |  |
Segment Reporting Information [Line Items] |  |
Revenue | 357.2 | 338.2
Non-subscription revenue |  |
Segment Reporting Information [Line Items] |  |
Revenue | 56.7 | 53.0
Total residential revenue |  |
Segment Reporting Information [Line Items] |  |
Revenue | 2,847.5 | 2,252.3
Total residential mobile revenue |  |
Segment Reporting Information [Line Items] |  |
Revenue | 761.7 | 381.2
Subscription revenue |  |
Segment Reporting Information [Line Items] |  |
Revenue | 481.3 | 235.9
Non-subscription revenue |  |
Segment Reporting Information [Line Items] |  |
Revenue | 280.4 | 145.3
Total B2B revenue |  |
Segment Reporting Information [Line Items] |  |
Revenue | 604.2 | 474.1
Subscription revenue |  |
Segment Reporting Information [Line Items] |  |
Revenue | 147.9 | 124.6
Non-subscription revenue |  |
Segment Reporting Information [Line Items] |  |
Revenue | 456.3 | 349.5
Other revenue |  |
Segment Reporting Information [Line Items] |  |
Revenue | $ 163.6 | $ 149.4

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