Stockholders Equity (Dividend Distributions) (Details) (USD $) In Millions, except Share data, unless otherwise specified	9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013
Dividends Payable [Line Items]
Preferred Stock, Declared	$ 6.1		$ 6.1
Common stock, Declared	25.0	[1]	16.0	[1]
Total, Declared	31.1	[2]	22.1	[2]
Preferred Stock, Paid	6.1		6.1
Common Stock, Paid	22.3	[1]	10.2	[1]
Total, Paid	28.4	[2]	16.3	[2]
Common Stock, Par or Stated Value Per Share	$ 0.0001
Common Stock, Shares Authorized	200,000,000		125,000,000
Cumulative preferred stock subject to mandatory redemption SeriesA [Member]
Dividends Payable [Line Items]
Preferred Stock, Dividend Rate, Percentage	6.00%
Preferred Stock, Shares Issued	100,000		100,000
Preferred Stock, Shares Outstanding	100,000		100,000
Cumulative preferred stock subject to mandatory redemption Series B [Member]
Dividends Payable [Line Items]
Preferred Stock, Dividend Rate, Percentage	6.45%
Preferred Stock, Shares Issued	32,550		32,550
Preferred Stock, Shares Outstanding	32,550		32,550
Series A Preferred Stock [Member]
Dividends Payable [Line Items]
Preferred Stock, Declared	4.5	[3]	4.5	[3]
Preferred Stock, Paid	4.5	[3]	4.5	[3]
Series B Preferred Stock [Member]
Dividends Payable [Line Items]
Preferred Stock, Declared	1.6	[4]	1.6	[4]
Preferred Stock, Paid	$ 1.6	[4]	$ 1.6	[4]

[1] $0.0001 par value per share, 200,000,000 and 125,000,000 shares authorized as of September 30, 2014 and 2013, respectively.

[2] Common stock dividends were declared at the end of each quarter and paid in the following quarter. The amount declared and not paid is accrued on the consolidated balance sheet.

[3] 6.00% Series A, 100,000 shares issued and outstanding as of September 30, 2014 and 2013, mandatorily convertible on May 19, 2015, or earlier at the option of the holders thereof.

[4] 6.45% Series B, 32,550 shares issued and outstanding as of September 30, 2014 and 2013, mandatorily convertible on November 3, 2018, or earlier at the option of the holders thereof, or, in certain circumstances, at our election on or after May 3, 2017.