Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

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Contractual interest rate for funds borrowed, under the debt agreement.

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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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No definition available.

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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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
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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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Publisher SEC
-Name Regulation S-X (SX)
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-Paragraph 20, 22
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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 remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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Debt (Summary Of Long-Term Debt) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 17, 2012	Jun. 30, 2011
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 2,706,000	$ 2,780,000
Debt Instrument, Unamortized Discount	(17,911)	(20,434)
Unamortized Debt Issuance Expense	(20,281)	(26,761)	$ (3,719)
Long-term Debt, Net	2,667,808	2,732,805
Current portion of long-term debt	148,000	74,000
Long-term debt, net	2,519,808	2,658,805
Term-A Facility [Member]
Debt Instrument [Line Items]
Unamortized Debt Issuance Expense			$ (288)
Long-term Debt, Net	$ 1,386,869	1,454,321
7.75% Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.75%				7.75%
Long-term Debt, Gross					$ 700,000
Debt Instrument, Unamortized Discount					$ (14,000)
Long-term Debt, Net	$ 689,910	688,512
4.75% Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.75%			4.75%
Long-term Debt, Gross				$ 600,000
Debt Instrument, Unamortized Discount				$ (10,500)
Long-term Debt, Net	$ 591,029	589,972
Senior Notes [Member] \| 7.75% Senior Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	700,000	700,000
Senior Notes [Member] \| 4.75% Senior Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	600,000	600,000
Secured Debt [Member] \| Term-A Facility [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 1,406,000	$ 1,480,000