Revenue from Contracts with Customers - Costs of Obtaining Contracts (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Costs of Obtaining Contracts with Customers
Capitalized contract cost, Beginning of period	$ 37.3	$ 31.8	$ 20.9
Deferral	16.6	15.5	17.4
Amortization	(14.4)	(10.0)	(6.5)
Capitalized contract cost, End of period	39.5	37.3	31.8
Current costs of obtaining contracts with customers	15.6	14.1
Non-current costs of obtaining contracts with customers	23.9	23.2
Total costs of obtaining contracts with customers	$ 39.5	$ 37.3	$ 31.8
Residential Subscription | Minimum
Costs of Obtaining Contracts with Customers
Costs of contracts with customers, amortization period	3 years
Residential Subscription | Maximum
Costs of Obtaining Contracts with Customers
Costs of contracts with customers, amortization period	4 years
Business Subscription | Minimum
Costs of Obtaining Contracts with Customers
Costs of contracts with customers, amortization period	5 years
Business Subscription | Maximum
Costs of Obtaining Contracts with Customers
Costs of contracts with customers, amortization period	6 years