Income Taxes - Income Tax Provision Reconciliation (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2012	Sep. 25, 2011	Sep. 30, 2012	Sep. 25, 2011
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract]
Federal statutory income tax rate	35.00%	35.00%	35.00%	35.00%
Income tax benefit at federal statutory rate	$ (0.9)	$ (1.9)	$ (6.3)	$ (5.2)
State and foreign taxes, net of federal benefit and valuation allowance	1.0	1.5	3.5	3.1
Nondeductible expenses and other	1.3	0.6	2.0	2.2
Release of valuation allowance due to acquisitions	0	0	0	(0.1)
Impact of indefinite lived deferred tax liabilities and state law changes	0.1	0	0.2	0.3
Settlement with IRS	0	0	0	(2.1)
Increase/(Decrease) in reserves for uncertain tax positions	0.1	0.1	0.1	0.1
Increase/(Decrease) in federal valuation allowance	(0.3)	1.3	4.3	3.0
Total	$ 1.3	$ 1.6	$ 3.8	$ 1.3

Income Tax Reconciliation Release Of Valuation Allowance, Acquisitions

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Current State And Foreign Tax Expense Benefit

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The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.

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The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to pretax Income or Loss from continuing operations; income tax expense or benefit may include interest and penalties on tax uncertainties based on the entity's accounting policy.

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The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to changes in the valuation allowance for deferred tax assets in the period.

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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The portion of the difference between total income tax expense or benefit as reported in the Income Statement for the period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to nondeductible expenses under enacted tax laws, or differences in the methodologies used to determine expense amounts for financial statements prepared in accordance with generally accepted accounting principles, not otherwise listed in the existing taxonomy.

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The portion of the difference, between total income tax expense or benefit as reported in the Income Statement for the year/accounting period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations, that is attributable to all other items not otherwise listed in the existing taxonomy.

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The sum of the differences between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to changes in all income tax contingencies, whether recorded or adjusted, during the period.

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