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

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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

The cash outflow from the repayment of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3291-108585

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Number of treasury shares (units) reissued during the period, excluding reissuance of shares (units) held in treasury used to satisfy equity-based compensation obligations exercised by the holders of such rights. Upon reissuance of shares (units) from treasury, either the common or preferred stock (unit) reissued is outstanding.

+ 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(29))
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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

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- Definition

The gross value of stock issued during the period upon the conversion of convertible securities.

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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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Debt (Senior Convertible Notes) (Narrative) (Details) - USD ($) $ in Millions	1 Months Ended		12 Months Ended
	Dec. 31, 2014	Jun. 30, 2014	Dec. 31, 2014
Treasury Stock, Common [Member]
Debt Instrument [Line Items]
Share reissuances, treasury stock (in shares)			6,590,975
4.25% Convertible Notes [Member]
Debt Instrument [Line Items]
Debt instrument, convertible, repayments (in dollars)	$ 97.0
4.0% Convertible Notes [Member]
Debt Instrument [Line Items]
Debt instrument, convertible, repayments (in dollars)		$ 105.0
Convertible Debt [Member] \| Treasury Stock, Common [Member]
Debt Instrument [Line Items]
Share reissuances, treasury stock (in shares)			6,600,000
Convertible Debt [Member] \| 4.25% Convertible Notes [Member]
Debt Instrument [Line Items]
Debt instrument, convertible, interest rate (percentage)	4.25%		4.25%
Value of premium shares upon conversion, convertible notes (in dollars)	$ 41.0
Convertible Debt [Member] \| 4.25% Convertible Notes [Member] \| Treasury Stock, Common [Member]
Debt Instrument [Line Items]
Share reissuances, treasury stock (in shares)	2,400,000
Convertible Debt [Member] \| 4.0% Convertible Notes [Member]
Debt Instrument [Line Items]
Debt instrument, convertible, interest rate (percentage)		4.00%
Value of premium shares upon conversion, convertible notes (in dollars)		$ 114.8
Convertible Debt [Member] \| 4.0% Convertible Notes [Member] \| Treasury Stock, Common [Member]
Debt Instrument [Line Items]
Share reissuances, treasury stock (in shares)		4,200,000