v3.10.0.1

Segment Reporting (Revenue by Major Category) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Segment Reporting Information [Line Items]
Revenue	$ 3,045.1	$ 2,774.9	$ 6,139.6	$ 5,444.7
Total residential cable revenue
Segment Reporting Information [Line Items]
Revenue	2,040.3	1,914.9	4,159.8	3,782.3
Total subscription revenue
Segment Reporting Information [Line Items]
Revenue	1,967.9	1,838.0	4,005.7	3,624.5
Video
Segment Reporting Information [Line Items]
Revenue	743.5	717.3	1,518.1	1,406.2
Broadband internet
Segment Reporting Information [Line Items]
Revenue	816.7	724.8	1,657.9	1,430.7
Fixed-line telephony
Segment Reporting Information [Line Items]
Revenue	407.7	395.9	829.7	787.6
Non-subscription revenue
Segment Reporting Information [Line Items]
Revenue	72.4	76.9	154.1	157.8
Total residential revenue
Segment Reporting Information [Line Items]
Revenue	2,465.1	2,295.0	5,007.9	4,525.3
Subscription revenue
Segment Reporting Information [Line Items]
Revenue	249.6	245.8	493.4	482.1
Non-subscription revenue
Segment Reporting Information [Line Items]
Revenue	175.2	134.3	354.7	260.9
Total residential mobile revenue
Segment Reporting Information [Line Items]
Revenue	424.8	380.1	848.1	743.0
Total B2B revenue
Segment Reporting Information [Line Items]
Revenue	503.1	429.1	991.0	821.2
Subscription revenue
Segment Reporting Information [Line Items]
Revenue	102.9	91.2	219.6	168.5
Non-subscription revenue
Segment Reporting Information [Line Items]
Revenue	400.2	337.9	771.4	652.7
Other revenue
Segment Reporting Information [Line Items]
Revenue	$ 76.9	$ 50.8	$ 140.7	$ 98.2

X

- Definition

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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