Cash Interest Payments, Expected Payments in Year Five

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Cash Interest Payments, Expected Payments in Year Four

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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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Cash Interest Payments, Expected Payments in Year Three

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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.

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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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Including the current and noncurrent portions, carrying amount of debt identified as being convertible into another form of financial instrument (typically the entity's common stock) as of the balance sheet date, which originally required full repayment more than twelve months after issuance or greater than the normal operating cycle of the company.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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

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Weighted average interest rate of debt outstanding.

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Gross amount of debt extinguished.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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The amount of cash paid for interest during the period.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Amount of increase (decrease) of the credit facility.

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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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Amount of long-term debt and capital leases due within one year or the normal operating cycle, if longer.

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Amount of long-term debt, after 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 payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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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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The total amount due within more than 12 month, or the operating cycle if longer, on all notes payable to banks paid on an installment. This can include the amount of any loans from the applicant firm. This does not, however, include any mortgage balances.

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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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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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The cash outflow for the obligation for a lease meeting the criteria for capitalization (with maturities exceeding one year or beyond the operating cycle of the entity, if longer).

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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The cash outflow for the payment of other borrowing 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 ($) $ in Thousands	3 Months Ended	12 Months Ended
Debt Level 4 (Details) - USD ($) $ in Thousands	Mar. 31, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Line of Credit Facility, Increase (Decrease), Net	$ 110,000	$ 135,000	$ 95,000
Repayments of Long-term Capital Lease Obligations		28,601	29,380	$ 26,280
Repayments of Debt		357,600	993,400	31,800
Repayments of Long-term Debt		160,220	230,561	90,466
Repayments of Other Debt		200	500	600
(Losses) gains on early extinguishment of debt, net		(6,918)	(29,158)	468
Notes Payable to Bank, Noncurrent		310,000	370,000
Bank credit facility due March 2016			86,600
Total debt		3,166,919	3,054,725
Current maturities of long-term debt		(95,181)	(90,931)
Less current maturities		95,181	90,931
Total long-term debt		$ 3,071,738	$ 2,963,794
Debt, Weighted Average Interest Rate		5.18%	5.21%
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate		76.00%	75.00%
2012		$ 95,181
2013		437,575
2014		727,315
2015		16,695
2016		225,364
2017 and thereafter		1,664,789
Line of Credit Facility, Maximum Borrowing Capacity		500,000
Letters of Credit, Maximum Borrowing Capacity		31,000		175,000
Interest Paid		164,748	$ 175,327	$ 125,022
Payments in 2016		161,896
Payments in 2017		150,012
Payments in 2018		128,239
Payments in 2019		106,210
Payments in 2020		104,706
Payments in 2021 and thereafter		291,116
Debt Instrument, Unamortized Premium		11,300
April 2015 [Member]
Debt Instrument [Line Items]
Repayments of Debt			136,500
April 2016 [Member]
Debt Instrument [Line Items]
Repayments of Debt		197,400
July 2016 [Member]
Debt Instrument [Line Items]
Extinguishment of Debt, Amount			59,100
Repayments of Debt			45,000
Repayments of Other Debt			14,200
Convertible Debt			46,279
April 2019 [Member]
Debt Instrument [Line Items]
Repayments of Debt			200,000
Repayments of Other Debt			9,100
Convertible Debt			200,000
July 2018 [Member]
Debt Instrument [Line Items]
Repayments of Debt		60,000	230,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Repayments of Debt		100,000
Discount (premium) [Member]
Debt Instrument [Line Items]
Extinguishment of Debt, Amount			167,000
Unsecured Debt [Member]
Debt Instrument [Line Items]
Unamortized pricing discounts and other		8,636	(2,905)
Unsecured Debt [Member] \| February 2013 [Member]
Debt Instrument [Line Items]
Senior Notes			4,800
Unsecured Debt [Member] \| April 2016 [Member]
Debt Instrument [Line Items]
Senior Notes		0	197,377
Unsecured Debt [Member] \| June 2017 [Member]
Debt Instrument [Line Items]
Senior Notes		295,000	295,000
Unsecured Debt [Member] \| October 2018 [Member]
Debt Instrument [Line Items]
Senior Notes		250,000	250,000
Unsecured Debt [Member] \| November 2020 [Member]
Debt Instrument [Line Items]
Senior Notes		200,000	200,000
Unsecured Debt [Member] \| November 2021 [Member]
Debt Instrument [Line Items]
Senior Notes		150,000	150,000
Unsecured Debt [Member] \| January 2022 [Member]
Debt Instrument [Line Items]
Senior Notes		425,000	425,000
Unsecured Debt [Member] \| April 2027 [Member]
Debt Instrument [Line Items]
Senior Notes		200,000	200,000
Unsecured Debt [Member] \| May 2024 [Member]
Debt Instrument [Line Items]
Senior Notes		850,000	550,000
Unsecured Debt [Member] \| July 2018 [Member]
Debt Instrument [Line Items]
Bank credit facility due March 2016		270,000	235,000
Capital Lease Obligations [Member]
Debt Instrument [Line Items]
Obligations under capital leases		204,246	181,002
Mortgages [Member]
Debt Instrument [Line Items]
Mortgage notes and other debt, maturities through 2047		$ 4,037	$ 4,251