Financings And Capitalization (Conversions Of Contingently Convertible Securities) (Details) (USD $)	12 Months Ended
Dec. 31, 2014
February Debt Conversion [Member]
Debt Conversion [Line Items]
Conversion Date	2014-02
Principal Converted	$ 17,000,000
Conversion Value per $1,000 of Principal	1,968
Shares of Common Stock Issued on Settlement	605,531
Cash Paid on Settlement	17,000,000
Convertible debt, interest rate	5.50%
Convertible debt, maturity date	2029
June Debt Conversion [Member]
Debt Conversion [Line Items]
Conversion Date	2014-06
Principal Converted	155,000,000
Conversion Value per $1,000 of Principal	2,215
Shares of Common Stock Issued on Settlement	6,372,578
Cash Paid on Settlement	$ 155,000,000
Convertible debt, interest rate	5.50%
Convertible debt, maturity date	2029

Debt Conversion, Converted Instrument, Amount per principal amount of note

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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

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

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- Definition

The month and year (YYYY-MM) the financial instrument was issued in exchange for the original debt being converted 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

+ Details

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- Definition

The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period.

+ References

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- Definition

Year the original debt was scheduled to mature, in CCYY format.

+ References

+ Details

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- Definition

The rate of interest that was being paid on the original debt issue that is being converted in the 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

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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

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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