Current Expected Credit Losses ("CECL") - Changes in the Allowance for Credit Losses (Details) $ in Millions	3 Months Ended
	Mar. 31, 2022 USD ($)
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance, December 31, 2021	$ 11.9
Bad debt (credit) expense	(0.3)
Advertising provision adjustment	(0.2)
Write-offs	(0.7)
Recoveries	0.1
Balance, March 31, 2022	10.8
Accounts Receivable
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance, December 31, 2021	1.0
Bad debt (credit) expense	(0.1)
Advertising provision adjustment	(0.0)
Write-offs	(0.2)
Recoveries	0.1
Balance, March 31, 2022	0.8
Notes receivable, short-term
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance, December 31, 2021	3.8
Bad debt (credit) expense	0.1
Advertising provision adjustment	(0.0)
Write-offs	(0.3)
Recoveries	0.0
Balance, March 31, 2022	3.6
Notes receivable, long-term
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance, December 31, 2021	6.6
Bad debt (credit) expense	(0.3)
Advertising provision adjustment	(0.2)
Write-offs	0.0
Recoveries	0.0
Balance, March 31, 2022	6.1
Lease Receivables
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance, December 31, 2021	0.2
Bad debt (credit) expense	(0.0)
Advertising provision adjustment	0.0
Write-offs	0.0
Recoveries	0.0
Balance, March 31, 2022	0.2
Equipment Notes
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance, December 31, 2021	0.1
Bad debt (credit) expense	0.0
Advertising provision adjustment	0.0
Write-offs	0.0
Recoveries	0.0
Balance, March 31, 2022	0.1
Other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance, December 31, 2021	0.2
Bad debt (credit) expense	0.0
Advertising provision adjustment	0.0
Write-offs	(0.2)
Recoveries	0.0
Balance, March 31, 2022	$ 0.0