|
Summary of Significant Accounting Policies (Details) (USD $)
In Millions, unless otherwise specified
|
12 Months Ended |
|
Dec. 25, 2013
|
Dec. 26, 2012
|
Dec. 28, 2011
|
| Concentration Risk [Line Items] |
|
|
|
| Short-term investments |
$ 5.3 |
$ 11.8 |
|
| Net gain/(loss) on investments (less than $0.1 million in 2011) |
1.1 |
0.7 |
(0.1) |
| Deferred compensation plan investments |
8.2 |
6.4 |
|
| Cash overdrafts |
1.6 |
6.3 |
|
| Maximum self-insurance retention levels, minimum per individual claim |
0.5 |
|
|
| Maximum self-insurance retention levels, maximum per individual claim |
1.0 |
|
|
| Discounted insurance liabilities |
23.8 |
23.2 |
|
| Self insurance liabilities, discount rate |
1.00% |
1.00% |
|
| Undiscounted insurance liabilities |
24.4 |
23.8 |
|
| Revenue recognized in breakage on gift cards |
0.3 |
0.3 |
|
| Initial franchise fees |
1.6 |
3.0 |
3.1 |
| Deferred fees |
1.1 |
1.2 |
|
| Advertising expense |
11.7 |
13.4 |
16.1 |
| Advertising contributions from franchisees |
$ 66.6 |
$ 65.1 |
$ 60.5 |
|
Revenue from franchises and licenses risk [Member]
|
|
|
|
| Concentration Risk [Line Items] |
|
|
|
| Franchise revenue, percentage |
32.00% |
32.00% |
34.00% |