Financing and Trade Receivables - Financing Receivable, Allowance for Credit Loss (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses, beginning of year	$ 65.9	$ 66.8
Provision for credit losses	17.9	29.1
Write-offs	(27.7)	(33.1)
Recoveries of amounts previously charged off	1.8	3.1
Allowance for credit losses, end of period	57.9	65.9
PSAs
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses, beginning of year	54.1	54.3
Provision for credit losses	14.4	24.9
Write-offs	(23.9)	(27.5)
Recoveries of amounts previously charged off	1.7	2.4
Allowance for credit losses, end of period	46.3	54.1
Franchisee Notes
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses, beginning of year	11.8	12.5
Provision for credit losses	3.5	4.2
Write-offs	(3.8)	(5.6)
Recoveries of amounts previously charged off	0.1	0.7
Allowance for credit losses, end of period	$ 11.6	$ 11.8