Face (par) amount of debt instrument at time of issuance.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
-Section 55
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- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
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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.

+ References

No definition available.

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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/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 210
-Section S99
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-Subparagraph (SX 210.7-03(a)(16))
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- Definition

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

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

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- Definition

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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- 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.

+ References

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Long-Term Debt - Schedule of Long-Term Debt (Details) - USD ($)	Dec. 31, 2017	Nov. 15, 2017	Dec. 31, 2016	Dec. 19, 2016	Dec. 07, 2015	Jun. 06, 2013	Nov. 21, 2012	Sep. 30, 2009
Debt Instrument [Line Items]
Less unamortized debt issuance costs	$ (17,594,000)		$ (23,453,000)
Total debt	5,155,555,000		6,209,536,000
Less current portion, net of issuance costs	800,944,000		400,975,000
Long-term debt	4,354,611,000		5,808,561,000
2016 Facility
Debt Instrument [Line Items]
Long-term debt	1,270,000,000		1,930,000,000
Face amount of debt	1,300,000,000
$400 million 1.850% senior notes due 2017
Debt Instrument [Line Items]
Long-term debt	0		400,000,000
Face amount of debt	$ 400,000,000	$ 400,000,000
Interest rate	1.85%
$800 million 2.050% senior notes due 2018
Debt Instrument [Line Items]
Long-term debt	$ 800,000,000		800,000,000
Face amount of debt	$ 800,000,000					$ 800,000,000
Interest rate	2.05%					2.05%
$500 million 6.250% senior notes due 2019
Debt Instrument [Line Items]
Long-term debt	$ 500,000,000		500,000,000
Face amount of debt	$ 500,000,000							$ 500,000,000
Interest rate	6.25%							6.25%
$600 million 3.000% senior notes due 2020
Debt Instrument [Line Items]
Long-term debt	$ 600,000,000		600,000,000
Face amount of debt	$ 600,000,000				$ 600,000,000
Interest rate	3.00%				3.00%
$500 million 2.800% senior notes due 2021
Debt Instrument [Line Items]
Long-term debt	$ 500,000,000		500,000,000
Face amount of debt	$ 500,000,000			$ 500,000,000
Interest rate	2.80%			2.80%
$500 million 3.125% senior notes due 2022
Debt Instrument [Line Items]
Long-term debt	$ 500,000,000		500,000,000
Face amount of debt	$ 500,000,000						$ 500,000,000
Interest rate	3.125%						3.125%
$300 million 3.850% senior notes due 2025
Debt Instrument [Line Items]
Long-term debt	$ 300,000,000		300,000,000
Face amount of debt	$ 300,000,000				$ 300,000,000
Interest rate	3.85%				3.85%
$700 million 3.800% senior notes due 2026
Debt Instrument [Line Items]
Long-term debt	$ 700,000,000		700,000,000
Face amount of debt	$ 700,000,000			$ 700,000,000
Interest rate	3.80%			3.80%
Capital Lease Obligations And Foreign Letter Of Credit Issuance
Debt Instrument [Line Items]
Long-term debt	$ 3,149,000		$ 2,989,000
Face amount of debt	$ 3,100,000