Cash Interest Payments, Expected Payments in Year Five

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- Definition

Cash Interest Payments, Expected Payments in Year Four

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No definition available.

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- Definition

Cash Interest Payments, Expected Payments in Year One

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- Definition

Cash Interest Payments, Expected Payments in Year Six and Thereafter

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No definition available.

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- Definition

Cash Interest Payments, Expected Payments in Year Three

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No definition available.

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- Definition

Cash Interest Payments, Expected Payments in Year Two

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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- Definition

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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-Topic 840

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

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Reflects the calculation as of the balance sheet date of the average interest rate weighted by the amount of debt outstanding by type or by instrument at that time.

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No definition available.

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The amount of cash paid for interest during the period.

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Amount borrowed under the credit facility as of the balance sheet date.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year.

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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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The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate.

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Including the current and noncurrent portions, the carrying value of notes payable which were initially due after one year or beyond the normal operating cycle, if longer, and which are not otherwise defined in the taxonomy.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

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Debt Level 4 (Details) (USD $)	12 Months Ended
Debt Level 4 (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Debt Instrument [Line Items]
Bank credit facility due March 2016	$ 86,600,000	$ 65,000,000
Total debt	1,948,050,000	1,884,670,000
Less current maturities	(31,429,000)	(23,554,000)
Total long-term debt	1,916,621,000	1,861,116,000
Debt, Weighted Average Interest Rate	6.28%	6.69%
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	87.00%	89.00%
2012	31,429,000
2013	32,404,000
2014	181,888,000
2015	297,176,000
2016	327,509,000
2017 and thereafter	1,077,644,000
Line of Credit Facility, Maximum Borrowing Capacity	500,000,000		400,000,000
Letters of Credit, Maximum Borrowing Capacity			175,000,000
Interest Paid	131,723,000	129,105,000	125,138,000
Payments in 2012	124,173,000
Payments in 2013	123,508,000
Payments in 2014	115,323,000
Payments in 2015	100,121,000
Payments in 2016	83,993,000
Payments in 2017 and thereafter	255,978,000
Unsecured Debt [Member]
Debt Instrument [Line Items]
Unamortized pricing discounts and other	(4,292,000)	(4,888,000)
Unsecured Debt [Member] \| February 2013 [Member]
Debt Instrument [Line Items]
Senior Notes	4,757,000	4,757,000
Unsecured Debt [Member] \| October 2014 [Member]
Debt Instrument [Line Items]
Senior Notes	0	180,692,000
Unsecured Debt [Member] \| April 2015 [Member]
Debt Instrument [Line Items]
Senior Notes	136,465,000	136,465,000
Unsecured Debt [Member] \| April 2016 [Member]
Debt Instrument [Line Items]
Senior Notes	197,377,000	197,377,000
Unsecured Debt [Member] \| June 2017 [Member]
Debt Instrument [Line Items]
Senior Notes	295,000,000	295,000,000
Unsecured Debt [Member] \| October 2018 [Member]
Debt Instrument [Line Items]
Senior Notes	250,000,000	250,000,000
Unsecured Debt [Member] \| May 2019 [Member]
Debt Instrument [Line Items]
Senior Notes	250,000,000	250,000,000
Unsecured Debt [Member] \| November 2020 [Member]
Debt Instrument [Line Items]
Senior Notes	200,000,000	0
Unsecured Debt [Member] \| November 2021 [Member]
Debt Instrument [Line Items]
Senior Notes	150,000,000	150,000,000
Unsecured Debt [Member] \| April 2027 [Member]
Debt Instrument [Line Items]
Senior Notes	200,000,000	200,000,000
Capital Lease Obligations [Member]
Debt Instrument [Line Items]
Obligations under capital leases	176,445,000	124,330,000
Mortgages [Member]
Debt Instrument [Line Items]
Mortgage notes and other debt, maturities through 2047	$ 5,698,000	$ 35,937,000