Income Taxes Deferred Tax Assets and Liabilities (Details) (USD $) In Millions, unless otherwise specified	Dec. 26, 2013	Dec. 27, 2012
Deferred tax assets:
Net operating loss carryforward	$ 9.8	$ 11.6
Excess of tax basis over book basis of fixed assets	13.6	14.2
Deferred revenue	9.5	9.6
Other	1.4	1.4
Total deferred tax assets before valuation allowance	34.3	36.8
Valuation allowance	(2.4)	(2.4)
Total deferred tax assets after valuation allowance	31.9	34.4
Deferred tax liabilities:
Deferred gain on sale of theatres	(22.7)	(26.4)
Excess of book basis over tax basis of intangible assets	(28.0)	(27.9)
Other	(2.4)	(1.9)
Total deferred tax liabilities	(53.1)	(56.2)
Net deferred tax liability	$ (21.2)	$ (21.8)