Income Taxes - Deferred Taxes (Details) (Details) (USD $) In Millions, unless otherwise specified	Dec. 29, 2013	Dec. 30, 2012
Deferred tax assets:
Allowance for doubtful accounts	$ 0.7	$ 0.4
Sundry accruals	2.8	3.3
Vacation accrual	5.2	5.1
Stock-based compensation	6.1	4.6
Payroll related accruals	3.3	2.7
Lease accruals	9.1	9.7
Investments	1.9	1.9
Net operating loss carryforwards	118.2	124.8
Tax credit carryforwards	5.1	3.7
Deferred revenue	2.4	2.1
Reserves and other	10.2	10.2
Gross deferred tax assets	165.0	168.5
Valuation allowance	(123.1)	(110.4)
Total deferred tax assets, net of allowance	41.9	58.1
Deferred tax liabilities:
Unearned revenue	(35.8)	(42.0)
Other intangibles	(4.7)	(15.7)
Property and equipment, principally due to differences in depreciation	(7.7)	(7.9)
Other	(0.9)	0
Total deferred tax liabilities	(49.1)	(65.6)
Net deferred tax asset (liability)	$ (7.2)	$ (7.5)