Revenue from Contracts with Customers (Tables)

12 Months Ended

Dec. 31, 2020

Revenue from Contracts with Customers

Schedule of revenue by service offering

The following table presents revenue by service offering for the years ended December 31, 2020, 2019 and 2018, respectively:

	Year ended December 31,
	2020		2019		2018
	(in millions)
Residential subscription
HSD	$	480.1	$	440.7	$	393.6
Video		393.8		417.4		465.3
Telephony		52.5		59.9		74.4
Total Residential subscription	$	926.4	$	918.0	$	933.3
Business subscription
HSD	$	87.1	$	80.3	$	73.5
Video		15.0		14.6		14.1
Telephony		41.6		42.8		41.9
Total business subscription	$	143.7	$	137.7	$	129.5
Total subscription services revenue		1,070.1		1,055.7		1,062.8
Other business services revenue(1)		25.3		27.4		28.1
Other revenue		53.0		62.7		62.9
Total revenue	$	1,148.4	$	1,145.8	$	1,153.8

(1) Includes wholesale and colocation revenue of $21.3 million, $21.6 million and $21.9 million for the years ended December 31, 2020, 2019 and 2018, respectively.

Schedule of activity and costs of current and non-current costs of obtaining contracts

	2020		2019		2018
	(in millions)
Balance at beginning of period	$	40.7	$	26.3	$	—
Impact of change in accounting policy		—		—		11.4
Deferral		21.1		22.2		19.0
Amortization		(12.2)		(7.8)		(4.1)
Balance at end of period	$	49.6	$	40.7	$	26.3

	December 31,  2020		December 31,  2019
	(in millions)
Current costs of obtaining contracts with customers	$	15.3	$	10.0
Non-current costs of obtaining contracts with customers		34.3		30.7
Total costs of obtaining contracts with customers	$	49.6	$	40.7

Schedule of activity of contract liabilities and current and non-current portion of contract liabilities

	2020		2019		2018
	(in millions)
Balance at beginning of period	$	4.2	$	3.9	$	—
Impact of change in accounting policy		—		—		2.1
Deferral		14.3		16.1		17.5
Revenue recognized		(14.3)		(15.8)		(15.7)
Balance at end of period	$	4.2	$	4.2	$	3.9

	December 31,  2020		December 31,  2019
	(in millions)
Current contract liabilities	$	3.6	$	3.6
Non-current contract liabilities		0.6		0.6
Total contract liabilities	$	4.2	$	4.2

Summary of expected revenue to be recognized in future periods related to performance obligations which have not been satisfied or are partially unsatisfied

	2021		2022		2023		Thereafter		Total
	(in millions)
Subscription services	$	68.9	$	35.7	$	11.6	$	7.1	$	123.3
Other business services		3.5		1.7		0.4		—		5.6
Total expected revenue	$	72.4	$	37.4	$	12.0	$	7.1	$	128.9

Schedule of change in the allowance for doubtful accounts for trade accounts receivable

	Year ended
	December 31,
	2020		2019
	(in millions)
Balance at beginning of period	$	7.5	$	7.5
Provision charged to expense		16.4		16.9
Accounts written off, net of recoveries		(15.3)		(16.9)
Balance at end of period	$	8.6	$	7.5