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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

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

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-Topic 210
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- Definition

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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- Definition

Amount of unamortized debt discount (premium) and debt issuance costs.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(3)
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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
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-Subparagraph (b)
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- Definition

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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Indebtedness - Outstanding Debt (Details) - USD ($) $ in Thousands	Jan. 20, 2020	Jul. 15, 2019	Feb. 11, 2019	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Long term debt gross				$ 2,386,209	$ 3,311,262
Unamortized debt premiums, discounts and issuance costs				(45,756)	(56,372)
Total debt				$ 2,340,453	3,254,890
Senior unsecured notes, 3.600% interest rate, due in 2020
Debt Instrument [Line Items]
Interest rate (as a percent)				3.60%
Senior unsecured notes, 4.000% interest rate, due in 2022
Debt Instrument [Line Items]
Interest rate (as a percent)				4.00%
Senior unsecured notes, 4.150% interest rate, due in 2022
Debt Instrument [Line Items]
Interest rate (as a percent)				4.15%
Senior unsecured notes, 4.250% interest rate, due in 2024
Debt Instrument [Line Items]
Interest rate (as a percent)				4.25%
Senior unsecured notes, 4.500% interest rate, due in 2025
Debt Instrument [Line Items]
Interest rate (as a percent)				4.50%
Unsecured Term Loan \| Unsecured term loan, due in 2020
Debt Instrument [Line Items]
Long term debt gross				$ 0	300,000
Unsecured Term Loan \| Unsecured term loan, due in 2022
Debt Instrument [Line Items]
Long term debt gross				0	88,000
Repayments of debt			$ 88,000
Senior Unsecured Notes \| Senior unsecured notes, 3.750% interest rate, due in 2019
Debt Instrument [Line Items]
Long term debt gross				0	$ 350,000
Repayments of debt		$ 350
Interest rate (as a percent)					3.75%
Senior Unsecured Notes \| Senior unsecured notes, 3.600% interest rate, due in 2020
Debt Instrument [Line Items]
Long term debt gross				$ 400,000	$ 400,000
Interest rate (as a percent)				3.60%
Senior Unsecured Notes \| Senior unsecured notes, 4.000% interest rate, due in 2022
Debt Instrument [Line Items]
Long term debt gross				$ 300,000	300,000
Interest rate (as a percent)				4.00%
Senior Unsecured Notes \| Senior unsecured notes, 4.150% interest rate, due in 2022
Debt Instrument [Line Items]
Long term debt gross				$ 300,000	300,000
Interest rate (as a percent)				4.15%
Senior Unsecured Notes \| Senior unsecured notes, 4.250% interest rate, due in 2024
Debt Instrument [Line Items]
Long term debt gross				$ 350,000	350,000
Interest rate (as a percent)				4.25%
Senior Unsecured Notes \| Senior unsecured notes, 4.500% interest rate, due in 2025
Debt Instrument [Line Items]
Long term debt gross				$ 400,000	400,000
Interest rate (as a percent)				4.50%
Senior Unsecured Notes \| Senior unsecured notes, 5.875% interest rate, due in 2046
Debt Instrument [Line Items]
Long term debt gross				$ 310,000	310,000
Interest rate (as a percent)				5.875%
Mortgage Note Payable \| Mortgage note payable, 7.000% interest rate, due in 2019
Debt Instrument [Line Items]
Long term debt gross				$ 0	$ 7,939
Interest rate (as a percent)					7.00%
Mortgage Note Payable \| Mortgage note payable, 5.720% interest rate, due in 2020
Debt Instrument [Line Items]
Long term debt gross				$ 32,888	$ 33,703
Interest rate (as a percent)				5.72%
Mortgage Note Payable \| Mortgage note payable, 4.160% interest rate, due in 2020
Debt Instrument [Line Items]
Long term debt gross				$ 40,062	40,772
Interest rate (as a percent)				4.16%
Mortgage Note Payable \| Mortgage note payable, 8.150% interest rate, due in 2021
Debt Instrument [Line Items]
Long term debt gross				$ 1,683	2,912
Interest rate (as a percent)				8.15%
Mortgage Note Payable \| Mortgage note payable, 5.877% interest rate, due in 2021
Debt Instrument [Line Items]
Long term debt gross				$ 13,166	13,437
Interest rate (as a percent)				5.877%
Mortgage Note Payable \| Mortgage note payable, 4.220% interest rate, due in 2022
Debt Instrument [Line Items]
Long term debt gross				$ 26,522	27,210
Interest rate (as a percent)				4.22%
Mortgage Note Payable \| Mortgage note payable, 3.550% interest rate, due in 2023
Debt Instrument [Line Items]
Long term debt gross				$ 71,000	71,000
Interest rate (as a percent)				3.55%
Mortgage Note Payable \| Mortgage note payable, 3.700% interest rate, due in 2023
Debt Instrument [Line Items]
Long term debt gross				$ 50,000	50,000
Interest rate (as a percent)				3.70%
Mortgage Note Payable \| Mortgage note payable, 4.800% interest rate, due in 2023
Debt Instrument [Line Items]
Long term debt gross				$ 24,108	24,509
Interest rate (as a percent)				4.80%
Mortgage Note Payable \| Mortgage note payable, 4.050% interest rate, due in 2030
Debt Instrument [Line Items]
Long term debt gross				$ 66,780	66,780
Interest rate (as a percent)				4.05%
Revolving credit facility, due in 2023 \| Line of Credit
Debt Instrument [Line Items]
Long term debt gross				$ 0	$ 175,000
Subsequent Event \| Senior Unsecured Notes \| Senior unsecured notes, 3.600% interest rate, due in 2020
Debt Instrument [Line Items]
Repayments of debt	$ 400,000
Interest rate (as a percent)	3.60%
Disposal Group, Held-for-sale \| Mortgage Note Payable
Debt Instrument [Line Items]
Total debt				13,128
Unamortized debt issuance expense				$ 38