Amount received upon termination of the swaps due to de-designation as hedged items.

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The number of interest rate swap transactions entered into.

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- Definition

Amount of the hedged item as of the balance sheet date related to the derivative. For example, the hedged balance on a debt instrument.

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- Definition

Cap rate on an interest rate derivative such as an interest rate cap or collar. If market rates exceed the cap rate, a payment or receipt is triggered on the contract.

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- Definition

The reference rate for the variable rate of the interest rate derivative, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

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- Definition

Fair value of derivative asset, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4B

-Subparagraph (a),(c)

-URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5624163-113959

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 44C

-Subparagraph a

-Clause 1

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB

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-Number 133

-Paragraph 205G

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

Fixed interest rate related to the interest rate derivative.

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- Definition

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- Definition

The net gain (loss) recognized in earnings during the period due to the ineffectiveness on interest rate fair value hedges.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 45

-Subparagraph a(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Name Accounting Standards Codification

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-SubTopic 25

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Amount of unrealized gain (loss) included in earnings for the period related to the fair value of the hedged item in an interest rate fair value hedge, which was offset by the gain (loss) on the hedging instrument to the extent that the fair value hedge is determined to be effective.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 45

-Subparagraph a(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Name Accounting Standards Codification

-Topic 815

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- Definition

Aggregate notional amount of foreign currency exchange rate derivatives. Notional amount refers to the number of currency units specified in the foreign currency derivative contract.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Notional Amount

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DERIVATIVES Part I (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended																			12 Months Ended		3 Months Ended	12 Months Ended
	Mar. 31, 2012 Interger	Apr. 02, 2011	Dec. 31, 2011	Mar. 31, 2012 Designated as Hedging Instrument [Member]	Dec. 31, 2011 Designated as Hedging Instrument [Member]	Apr. 02, 2011 Designated as Hedging Instrument [Member]	Mar. 31, 2012 Not Designated as Hedging Instrument [Member]	Dec. 31, 2011 Not Designated as Hedging Instrument [Member]	Apr. 02, 2011 Not Designated as Hedging Instrument [Member]	Mar. 31, 2012 Interest Rate Swap Contracts [Member] Other Long-term Liabilities [Member] Designated as Hedging Instrument [Member]	Apr. 02, 2011 Interest Rate Swap Contracts [Member] Other Long-term Liabilities [Member] Designated as Hedging Instrument [Member]	Mar. 31, 2012 Interest Rate Swap Contracts [Member] Other Long Term Assets [Member] Designated as Hedging Instrument [Member]	Dec. 31, 2011 Interest Rate Swap Contracts [Member] Other Long Term Assets [Member] Designated as Hedging Instrument [Member]	Mar. 31, 2012 Foreign Exchange Contract [Member] Accrued Expenses and Other Current Liabilities [Member] Designated as Hedging Instrument [Member]	Apr. 02, 2011 Foreign Exchange Contract [Member] Accrued Expenses and Other Current Liabilities [Member] Designated as Hedging Instrument [Member]	Dec. 31, 2011 Foreign Exchange Contract [Member] Prepaid expenses and other current assets [Member] Designated as Hedging Instrument [Member]	Mar. 31, 2012 Interest Rate Cap Contract [Member] Other Long Term Assets [Member] Not Designated as Hedging Instrument [Member]	Dec. 31, 2011 Interest Rate Cap Contract [Member] Other Long Term Assets [Member] Not Designated as Hedging Instrument [Member]	Apr. 02, 2011 Interest Rate Cap Contract [Member] Other Long Term Assets [Member] Not Designated as Hedging Instrument [Member]	Dec. 31, 2010 Interest Rate Swaps on 2014 Notes [Member]	Dec. 17, 2010 Interest Rate Swaps on 2014 Notes [Member] Interger	Mar. 31, 2012 Interest Rate Swaps on 2019 Notes [Member]	Dec. 31, 2011 Interest Rate Swaps on 2019 Notes [Member]	Mar. 21, 2012 Interest Rate Swaps on 2019 Notes [Member] Interger	Mar. 07, 2011 Interest Rate Swaps on 2019 Notes [Member] Interger
Derivative [Line Items]
Number of interest rate swap transactions	3																				3			3	3
Amount of hedged item related to derivative																					$ 250.0			$ 150.0	$ 150.0
Fixed interest rate related to derivative																					5.125%			6.875%	6.875%
Variable interest rate related to derivative																				three-month LIBOR rates (which are reset on the 15th day of each calendar quarter) plus 3.46%		one-month LIBOR rates (which are reset on the 15th day of each calendar quarter) plus 5.195%	three-month LIBOR rates (which are reset on the 15th day of each calendar quarter) plus 3.73%
Interest rate cap																					5.00%
Amount received upon termination of swaps																							8.1
Change in interest expense related to ineffectiveness of swap	(1.5)	(2.1)
Change in interest expense related to changes in the fair value of interest rate cap	(0.1)	(0.1)
Notional amounts of Canadian Dollar - US Dollar forward exchange contracts outstanding	15.2	15.9	5.3
Derivatives, Fair Value [Line Items]
Total derivative assets				5.9	5.6		0.1	0.2	1.2			5.9	5.5			0.1	0.1	0.2	1.2
Total derivative liabilities				$ 0.4		$ 3.2				$ 0.3	$ 2.4			$ 0.1	$ 0.8