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, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount, after accumulated amortization, of debt discount.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts 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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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, 2018	Dec. 31, 2017	Jul. 28, 2017	Mar. 30, 2016	Dec. 17, 2012
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 3,152,584	$ 3,150,000
Debt Instrument, Unamortized Discount	(29,181)	(33,776)
Unamortized Debt Issuance Expense	(13,848)	(16,967)	$ (9,400)
Long-term Debt, Net	3,109,555	3,099,257
Current portion of long-term debt	21,334	0
Long-term debt, net	3,088,221	3,099,257
Term-A Facility [Member]
Debt Instrument [Line Items]
Long-term Debt, Net	739,710	737,140
4.75% Senior Notes Due 2025 [Member]
Debt Instrument [Line Items]
Long-term Debt, Net	786,458	784,757
5.00% Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Unamortized Discount				$ (17,500)
Long-term Debt, Net	986,275	984,056
4.75% Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Unamortized Discount					$ (10,500)
Long-term Debt, Net	594,528	593,304
Other Debt [Member]
Debt Instrument [Line Items]
Long-term Debt, Net	2,584
Senior Notes [Member] \| 4.75% Senior Notes Due 2025 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	800,000	800,000
Senior Notes [Member] \| 5.00% Senior Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	1,000,000	1,000,000
Senior Notes [Member] \| 4.75% Senior Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	600,000	600,000
Senior Notes [Member] \| Other Debt [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	2,584	0
Secured Debt [Member] \| Term-A Facility [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 750,000	$ 750,000	$ 750,000