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This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

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- Definition

Long-lived assets that are held for sale apart from normal operations and anticipated to be sold in less than one year.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 157

-Paragraph 33

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- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. Fair value of convertible debt at the balance sheet date.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Convertible Security

-URI http://asc.fasb.org/extlink&oid=6509036

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- Definition

Derivative instrument obligations meeting the definition of a liability which the Company is a party to as of the balance sheet date.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

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This item represents the amount of the total change in unrealized (holding) gains or losses for the period which are included in the statement of income (or changes in net assets) in other income. Such unrealized (holding) gains or losses relate to those assets still held at the reporting date for which fair value is measured on a recurring basis using significant unobservable inputs (Level 3).

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-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

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This item represents the amount of the total change in unrealized (holding) gains or losses for the period which are included in the statement of income (or changes in net assets) in other income. Such unrealized (holding) gains or losses relate to those liabilities still held at the reporting date for which fair value is measured on a recurring basis using significant unobservable inputs (Level 3).

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- Definition

Sales that have taken place during the period in relation to assets measured at fair value and categorized within Level 3 of the fair value hierarchy.

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Settlements that have taken place during the period in relation to assets measured at fair value and categorized within Level 3 of the fair value hierarchy.

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This element represents an asset measured at fair value using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances.

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Sales that have taken place during the period in relation to liabilities measured at fair value and categorized within Level 3 of the fair value hierarchy.

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Settlements that have taken place during the period in relation to liabilities measured at fair value and categorized within Level 3 of the fair value hierarchy.

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This element represents a liability measured at fair value using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances.

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This element represents the aggregate of the liabilities reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

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Fair Value Measurements (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 27, 2013 Warrant liability [Member]	Sep. 27, 2013 Assets held for sale [Member]	Sep. 27, 2013 Significant Other Observable Inputs (Level 2) [Member]	Sep. 27, 2013 Significant Unobservable Inputs (Level 3) [Member]	Sep. 27, 2013 Fair Value, Measurements, Recurring [Member] Quoted Prices In Active markets for Identical Assets (Level 1) [Member]	Dec. 28, 2012 Fair Value, Measurements, Recurring [Member] Quoted Prices In Active markets for Identical Assets (Level 1) [Member]	Sep. 27, 2013 Fair Value, Measurements, Recurring [Member] Significant Other Observable Inputs (Level 2) [Member]	Dec. 28, 2012 Fair Value, Measurements, Recurring [Member] Significant Other Observable Inputs (Level 2) [Member]	Sep. 27, 2013 Fair Value, Measurements, Recurring [Member] Significant Unobservable Inputs (Level 3) [Member]	Dec. 28, 2012 Fair Value, Measurements, Recurring [Member] Significant Unobservable Inputs (Level 3) [Member]
Assets [Abstract]
Long-lived assets held for sale					$ 0	$ 0	$ 0	$ 0	$ 1.8	$ 7.5
Total					0	0	0	0	1.8	7.5
Liabilities [Abstract]
Warrant liability						0		0		12.2
Total						0		0		12.2
Senior convertible notes			16.7
Estimated fair value of the Oaktree term loans				85.1
Reconciliation of warrant liability [Roll Forward]
Fair value at December 28, 2012	12.2
Change in fair value (included in other expense, net)	2.9
Settlement of warrant liability	(15.1)
Long-lived assets sold	0
Fair value at September 27, 2013	0
Reconciliation of assets held for sale [Roll Forward]
Fair value at December 28, 2012		7.5
Change in fair value (included in other expense, net)		0
Settlement of warrant liability		0
Long-lived assets sold		(5.7)
Fair value at September 27, 2013		$ 1.8