Commitments and Contingencies (Details) $ in Millions |
6 Months Ended | ||
|---|---|---|---|
|
Jun. 30, 2019
CAD ($)
|
Jun. 30, 2019
USD ($)
|
Dec. 31, 2018
USD ($)
|
|
| Other Commitments [Line Items] | |||
| Event of default, loan due In full, term | 90 days | ||
| Portion that company might be obligated to repay in the event franchisees defaulted | $ 35.4 | ||
| Fair value of franchisee-related borrowings | 0.4 | $ 0.3 | |
| Loan facility to franchisees, maximum commitment amount | 55.0 | ||
| Loss contingency accrual | 1.2 | 1.4 | |
| Reserve for unfunded loan commitments | 0.6 | 0.5 | |
| Unused credit card lines | |||
| Other Commitments [Line Items] | |||
| Remaining credit available | 307.5 | $ 316.4 | |
| Minimum | |||
| Other Commitments [Line Items] | |||
| Range of possible loss not accrued | 0.0 | ||
| Loss contingency, estimate of possible loss | 1.5 | ||
| Maximum | |||
| Other Commitments [Line Items] | |||
| Range of possible loss not accrued | 1.4 | ||
| Loss contingency, estimate of possible loss | $ 3.0 | ||
| Franchise Loan Facility | |||
| Other Commitments [Line Items] | |||
| Loan facility maximum Canadian sub facility commitment amount | $ 25,000,000.0 |