External financing (Details 1) (USD $) In Thousands, unless otherwise specified	Jun. 29, 2013	Dec. 29, 2012	Jun. 30, 2012
Components of long-term debt
Subtotal	$ 1,209,579		$ 1,274,456
Discount on notes	(2,586)		(2,471)
Long-term debt net of current portion	1,206,993		1,271,985
5.875% Notes due March 15, 2014
Debt Instrument [Line Items]
Senior notes	0		300,000
Interest rate of senior notes	5.875%		5.875%
6.00% Notes due September 1, 2015
Debt Instrument [Line Items]
Senior notes	250,000		250,000
Interest rate of senior notes	6.00%		6.00%
6.625% Notes due September 15, 2016
Debt Instrument [Line Items]
Senior notes	300,000		300,000
Interest rate of senior notes	6.625%		6.625%
5.875% Notes due June 15, 2020
Debt Instrument [Line Items]
Senior notes	300,000		300,000
Interest rate of senior notes	5.875%		5.875%
4.875% Notes due December 1, 2022
Debt Instrument [Line Items]
Senior notes	350,000	350,000	0
Interest rate of senior notes	4.875%	4.875%	0.00%
Other long-term debt
Debt Instrument [Line Items]
Other long-term debt	$ 9,579		$ 124,456

Long term debt noncurrent before discount on notes.

No definition available.

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- Definition

The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount.

+ References

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-Publisher FASB

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- Definition

Interest rate stated in the contractual debt agreement.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

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- Definition

The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

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-Publisher FASB

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- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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- Definition

Carrying value as of the balance sheet date of debt not otherwise defined (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

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