Other income (Schedule of Other Income) (Details) - USD ($) $ in Millions |
3 Months Ended | |
---|---|---|
Mar. 31, 2020 |
Mar. 31, 2019 |
|
Disaggregation of Revenue [Line Items] | ||
Other income | $ 14.3 | $ 19.7 |
Ancillary Product Profit Sharing [Member] | ||
Disaggregation of Revenue [Line Items] | ||
Other income | 8.2 | 10.4 |
Remarketing Fees [Member] | ||
Disaggregation of Revenue [Line Items] | ||
Other income | 2.8 | 3.4 |
Interest [Member] | ||
Disaggregation of Revenue [Line Items] | ||
Other income | 1.7 | 2.3 |
Dealer Enrollment Fees [Member] | ||
Disaggregation of Revenue [Line Items] | ||
Other income | 0.9 | 1.0 |
Dealer Support Products And Services [Member] | ||
Disaggregation of Revenue [Line Items] | ||
Other income | 0.5 | 0.7 |
GPS-SID Fees [Member] | ||
Disaggregation of Revenue [Line Items] | ||
Other income | 0.0 | 1.4 |
Other [Member] | ||
Disaggregation of Revenue [Line Items] | ||
Other income | $ 0.2 | $ 0.5 |