Revenue from Contracts with Customers (Tables)

12 Months Ended

Dec. 31, 2021

Revenue from Contracts with Customers

Schedule of revenue by service offering

The following table presents revenue by service offering:

	Year ended December 31,
	2021		2020		2019
	(in millions)
Residential subscription
HSD	$	329.0	$	294.5	$	270.3
Video		204.1		236.4		251.2
Telephony		28.5		35.6		41.0
Total Residential subscription	$	561.6	$	566.5	$	562.5
Business subscription
HSD	$	70.1	$	64.5	$	59.0
Video		11.4		11.4		11.0
Telephony		28.9		29.7		30.7
Total business subscription	$	110.4	$	105.6	$	100.7
Total subscription services revenue		672.0		672.1		663.2
Other business services revenue(1)		22.3		23.4		24.6
Other revenue		31.4		34.7		39.2
Total revenue	$	725.7	$	730.2	$	727.0

(1) Includes wholesale and colocation lease revenue of $19.4 million for both years ended December 31, 2021 and 2020 and $18.8 million for the year ended 2019.

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

	2021		2020		2019
	(in millions)
Balance at beginning of period	$	31.8	$	20.9	$	6.5
Deferral		15.5		17.4		18.1
Amortization		(10.0)		(6.5)		(3.7)
Balance at end of period	$	37.3	$	31.8	$	20.9

	December 31,  2021		December 31,  2020
	(in millions)
Current costs of obtaining contracts with customers	$	14.1	$	3.6
Non-current costs of obtaining contracts with customers		23.2		28.2
Total costs of obtaining contracts with customers	$	37.3	$	31.8

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

	2021		2020		2019
	(in millions)
Balance at beginning of period	$	2.9	$	2.8	$	2.6
Deferral		12.4		8.8		9.7
Revenue recognized		(12.0)		(8.7)		(9.5)
Balance at end of period	$	3.3	$	2.9	$	2.8

	December 31,  2021		December 31,  2020
	(in millions)
Current contract liabilities	$	2.9	$	2.4
Non-current contract liabilities		0.4		0.5
Total contract liabilities	$	3.3	$	2.9

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

	2022		2023		2024		Thereafter		Total
	(in millions)
Subscription services	$	39.2	$	20.2	$	8.0	$	2.5	$	69.9
Other business services		3.3		1.5		0.6		—		5.4
Total expected revenue	$	42.5	$	21.7	$	8.6	$	2.5	$	75.3

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

	Year ended
	December 31,
	2021		2020
	(in millions)
Balance at beginning of period	$	6.7	$	6.4
Provision charged to expense		8.3		11.6
Accounts written off, net of recoveries		(10.7)		(11.3)
Balance at end of period	$	4.3	$	6.7