Noncontrolling Interests (Preferred Stockholders' Equity in Subsidiaries) (Details) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Noncontrolling Interest [Line Items]
Preferred stock voting power percentage	25.00%
Common stock voting power percentage	75.00%
Dividends in arrears	$ 0	$ 0
Redeemable Preferred Stock Member
Noncontrolling Interest [Line Items]
Shares outstanding	300,000
Value of shares outstanding	$ 300,000,000
Preferred stock, dividend rate	.06125
Dividend increase percentage each interval once shares become callable	50.00%

Preferred Stock, Dividend Rate, Increase if Outstanding Once Callable

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- Definition

The amount of noncontrolling interest in subsidiary represented by preferred securities issued by the subsidiary.

+ 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 210.5-02.31)

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

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 27

-Article 5

+ Details

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- Definition

Description of the rate or terms of the dividend requirements of preferred securities issued by the subsidiary and held by noncontrolling interest owners.

+ References

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- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

+ Details

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- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

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- Definition

Aggregate amount of cumulative preferred dividends in arrears.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 5

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21488-112644

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- Definition

Number of shares issued which are neither cancelled nor held in the treasury.

+ References

No definition available.

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