End date of current fiscal year in the format --MM-DD.

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- Definition

contingent cash interest paid per stated liquidation amount

+ References

No definition available.

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- Definition

Contingent Interest, Payment Date

+ References

No definition available.

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- Definition

Contingent Interest, Trading Price Period End Date

+ References

No definition available.

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- Definition

Convertible Debt, initial conversion rate

+ References

No definition available.

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- Definition

Debt insturment, convertible, contingent interest rate

+ References

No definition available.

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- Definition

Remaining Liquidation Amount of Old Trust Piers

+ References

No definition available.

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- Definition

The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586

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-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 3

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

-Article 5

Reference 2: 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)

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

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- Definition

The price per share of the conversion feature embedded in the debt instrument.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 20

-Section 50

-Paragraph 5

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6928298&loc=SL6031898-161870

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: 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))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

For an unclassified balance sheet, the amount as of the balance sheet date of capitalized costs associated with the issuance of debt instruments (for example, legal, accounting, underwriting, printing, and registration costs) that will be charged against earnings over the life of the debt instruments to which such costs pertain. Such amount is before the consideration of accumulated amortization.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28555-108399

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- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 50

-Section 40

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6850294&loc=d3e12317-112629

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-Name Accounting Standards Codification

-Topic 470

-SubTopic 50

-Section 40

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6850294&loc=d3e12355-112629

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- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.8)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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Debt 4.00% Junior Subordinated Convertible Debentures (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Long-term Debt, Gross	$ 2,346,488,000us-gaap_DebtInstrumentCarryingAmount	$ 2,500,434,000us-gaap_DebtInstrumentCarryingAmount
Gains (Losses) on Extinguishment of Debt	69,381,000	56,280,000	47,558,000
Current Fiscal Year End Date	--12-31
4.00% Junior Subordinated Convertible Debentures, due 2033 [Member]
Long-term Debt, Gross	306,683,000	307,153,000
Debt Instrument, Interest Rate, Stated Percentage	4.00%
Debt Conversion, Converted Instrument, Amount	334,000,000
Gains (Losses) on Extinguishment of Debt		1,000,000
Convertible Debt, initial conversion rate	1.22
Remaining Liquidation Amount of Old Trust Piers	10,000,000
Debt Instrument, Convertible, Conversion Price	$ 40.82
Deferred Finance Costs, Gross	6,000,000
4% debt Series B [Member]
Write off of Deferred Debt Issuance Cost	1,000,000
June 15, 2013 - September 14, 2013 [Domain]
Debt instrument, convertible, contingent interest rate	0.125%
Contingent Interest, Trading Price Period End Date		Jun. 13, 2013
contingent cash interest paid per stated liquidation amount		0.07
Contingent Interest, Payment Date		Sep. 16, 2013
September 15, 2013 - December 14, 2013 [Domain]
Contingent Interest, Trading Price Period End Date		Sep. 12, 2013
contingent cash interest paid per stated liquidation amount		0.09
Contingent Interest, Payment Date		Dec. 16, 2013
December 15, 2013 - March 14, 2014 [Domain]
Contingent Interest, Trading Price Period End Date	Dec. 12, 2013
contingent cash interest paid per stated liquidation amount	0.09
Contingent Interest, Payment Date	Mar. 17, 2014
March 15, 2014 - June 14, 2014 [Domain]
Contingent Interest, Trading Price Period End Date	Mar. 13, 2014
contingent cash interest paid per stated liquidation amount	0.09
Contingent Interest, Payment Date	Jun. 16, 2014
June 15, 2014 - September 15, 2015 [Domain]
Contingent Interest, Trading Price Period End Date	Jun. 12, 2014
contingent cash interest paid per stated liquidation amount	0.09
Contingent Interest, Payment Date	Sep. 15, 2014
September 14, 2014 - December 14, 2014 [Domain]
Contingent Interest, Trading Price Period End Date	Sep. 12, 2014
contingent cash interest paid per stated liquidation amount	0.10
Contingent Interest, Payment Date	Dec. 15, 2014
December 15, 2014 - March 14, 2015 [Domain]
Contingent Interest, Trading Price Period End Date	Dec. 11, 2014
contingent cash interest paid per stated liquidation amount	0.11
Contingent Interest, Payment Date	Mar. 16, 2015
4% debt Series B [Member] \| 4.00% Junior Subordinated Convertible Debentures, due 2033 [Member]
Long-term Debt, Gross	297,000,000
Debt Conversion, Converted Instrument, Amount	400,000	37,000,000
4% Debt Series A [Member] \| 4.00% Junior Subordinated Convertible Debentures, due 2033 [Member]
Debt Conversion, Converted Instrument, Amount		$ 1,000,000