Debt Instrument, Discount Rate, Stated Percentage

No definition available.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

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+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
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+ Details

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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.

+ Details

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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-Subparagraph (SX 210.5-02.22(a)(2))
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+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Amount of the required periodic payments applied to interest.

+ References

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

Amount of the cost of borrowed funds accounted for as interest expense.

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- Definition

Amount of interest payable on debt, including, but not limited to, trade payables.

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- Definition

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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-Glossary Financing Activities
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Debt (Senior Notes) (Details) - USD ($)										1 Months Ended	12 Months Ended
Debt (Senior Notes) (Details) - USD ($)	Sep. 15, 2015	Aug. 15, 2015	Mar. 15, 2015	Feb. 15, 2015	Sep. 15, 2014	Aug. 15, 2014	Mar. 15, 2014	Feb. 15, 2014	Mar. 28, 2013	Feb. 29, 2004	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Net proceeds from issuance of long-term debt											$ 0	$ 0	$ 698,093,000
Senior notes interest expense											55,116,000	58,395,000	77,735,000
Senior Notes 2013
Debt Instrument [Line Items]
Senior notes interest payment	$ 11,375,000		$ 11,375,000		$ 11,375,000		$ 11,375,000
Senior Notes 2004
Debt Instrument [Line Items]
Senior notes interest payment		$ 16,031,000		$ 16,031,000		$ 16,031,000		$ 30,094,000
Senior Notes \| Senior Notes 2013
Debt Instrument [Line Items]
Debt instrument, face amount									$ 700,000,000
Net proceeds from issuance of long-term debt									698,093,000
Senior notes unamortized discount									1,907,000
Senior notes interest expense											22,988,000	22,981,000	17,357,000
Accrued interest											$ 6,635,000	6,635,000
Senior Notes \| Senior Notes 2013, First Series
Debt Instrument [Line Items]
Debt instrument, face amount									$ 350,000,000
Senior notes interest rate									2.50%
Senior notes maturity date											Mar. 15, 2018
Senior notes discount rate									0.18%
Senior Notes \| Senior Notes 2013, Second Series
Debt Instrument [Line Items]
Debt instrument, face amount									$ 350,000,000
Senior notes interest rate									4.00%
Senior notes maturity date											Mar. 15, 2023
Senior notes discount rate									0.37%
Senior Notes \| Senior Notes 2004
Debt Instrument [Line Items]
Debt instrument, face amount										$ 975,000,000
Net proceeds from issuance of long-term debt										971,537,000
Senior notes unamortized discount										3,463,000
Senior notes interest expense											$ 32,127,000	35,414,000	$ 59,414,000
Accrued interest											$ 12,023,000	$ 12,023,000
Senior Notes \| Senior Notes 2004, First Series
Debt Instrument [Line Items]
Debt instrument, face amount										$ 500,000,000
Senior notes interest rate										5.63%
Senior notes maturity date											Feb. 18, 2014
Senior notes discount rate										0.11%
Senior Notes \| Senior Notes 2004, Second Series
Debt Instrument [Line Items]
Debt instrument, face amount										$ 475,000,000
Senior notes interest rate										6.75%
Senior notes maturity date											Feb. 15, 2034
Senior notes discount rate										0.61%