Revenue from Contracts with Customers (Tables)

3 Months Ended

Mar. 31, 2021

Revenue from Contracts with Customers

Schedule of revenue by service offering

The following table presents revenue by service offering for the three months ended March 31, 2021 and 2020:

	Three months ended March 31, 2021						Three months ended March 31, 2020
	Residential		Business		Total			Residential		Business		Total
	Subscription		Subscription		Revenue			Subscription		Subscription		Revenue
	(in millions)
HSD	$	129.8	$	22.9	$	152.7	$	115.3	$	21.3	$	136.6
Video		89.6		3.7		93.3		99.5		3.9		103.4
Telephony		11.6		10.2		21.8		14.0		10.6		24.6
Total subscription services revenue	$	231.0	$	36.8	$	267.8	$	228.8	$	35.8	$	264.6
Other business services revenue(1)		—		—		6.2		—		—		6.5
Other revenue		—		—		12.3		—		—		13.4
Total revenue	$	231.0	$	36.8	$	286.3	$	228.8	$	35.8	$	284.5

(1) Includes wholesale and colocation revenue of $5.4 million for both the three months ended March 31, 2021 and 2020.

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

	Three months ended
	March 31,
	2021		2020
	(in millions)
Balance at beginning of period	$	49.6	$	40.7
Deferral		4.9		5.7
Amortization		(3.6)		(2.7)
Balance at end of period	$	50.9	$	43.7

	March 31,  2021		December 31,  2020
	(in millions)
Current costs of obtaining contracts with customers	$	16.7	$	15.3
Non-current costs of obtaining contracts with customers		34.2		34.3
Total costs of obtaining contracts with customers	$	50.9	$	49.6

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

	Three months ended
	March 31,
	2021		2020
	(in millions)
Balance at beginning of period	$	4.2	$	4.2
Deferral		4.6		3.7
Revenue recognized		(4.2)		(4.0)
Balance at end of period	$	4.6	$	3.9

	March 31,  2021		December 31,  2020
	(in millions)
Current contract liabilities	$	4.0	$	3.6
Non-current contract liabilities		0.6		0.6
Total contract liabilities	$	4.6	$	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	$	54.2	$	41.5	$	16.3	$	6.1	$	118.1
Other business services		2.8		2.1		0.7		0.1		5.7
Total expected revenue	$	57.0	$	43.6	$	17.0	$	6.2	$	123.8

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

	Three months ended
	March 31,
	2021		2020
	(in millions)
Balance at beginning of period	$	8.6	$	7.5
Provision charged to expense		2.9		5.3
Accounts written off, net of recoveries		(2.4)		(3.8)
Balance at end of period	$	9.1	$	9.0