Financing Receivables - Schedule of Financing Receivable Past Due (Details) - PSAs - USD ($) $ in Millions	Sep. 25, 2020	Dec. 31, 2019
Financing Receivable, Past Due [Line Items]
Past due financing receivables	$ 11.4	$ 12.8
Total not considered past due	307.6	314.7
Total	319.0	327.5
Greater than 90 days past due and accruing interest	6.7	7.2
30-59 days past due
Financing Receivable, Past Due [Line Items]
Past due financing receivables	3.1	3.7
60-90 days past due
Financing Receivable, Past Due [Line Items]
Past due financing receivables	1.6	1.9
Greater than 90 days past due
Financing Receivable, Past Due [Line Items]
Past due financing receivables	$ 6.7	$ 7.2