Series A Preferred Stock (Details) - USD ($)	3 Months Ended
	Mar. 31, 2016	Dec. 31, 2015	Dec. 04, 2015
Series A Preferred Stock [Abstract]
Series A convertible preferred stock, issued	820,000.00	820,000.00	820,000
Financial instruments subject to redemption, settlement terms, maximum number of shares	27,800,000	27,400,000
Payments of Ordinary Dividends, Preferred Stock and Preference Stock	$ 12,000,000
Dividends, Preferred Stock, Stock	$ 12,133
Accrued Dividends		$ 4,000,000
Conversion Price Per Share At Option Of Holder	$ 30.00
Conversion rate per preferred share	33.333
Aggregate purchase price of preferred shares			$ 820,000,000
Stated Value Of Preferred Shares Per Share			$ 1,000
Direct Issuance Expenses	$ 26,000,000
Dividend rate	5.50%