Subsequent Events (Details Textuals) (USD $)			0 Months Ended
	Mar. 31, 2014 8 1/4% Senior Subordinated Notes due 2020 [Member] Rate	Apr. 29, 2014 Subsequent Event [Member]	Apr. 30, 2014 Subsequent Event [Member] 5 1/2% Senior Subordinated Notes Due 2022 [Member] Rate	Apr. 30, 2014 Subsequent Event [Member] 5 1/2% Senior Subordinated Notes Due 2022 [Member] Debt Instrument, Redemption, Period One [Member] Rate	Apr. 30, 2014 Subsequent Event [Member] 5 1/2% Senior Subordinated Notes Due 2022 [Member] Debt Instrument, Redemption, Period Two [Member] Rate	Apr. 30, 2014 Subsequent Event [Member] 5 1/2% Senior Subordinated Notes Due 2022 [Member] Debt Instrument, Redemption, Period Three [Member] Rate	Apr. 30, 2014 Subsequent Event [Member] 5 1/2% Senior Subordinated Notes Due 2022 [Member] Debt Instrument, Redemption, Period Four [Member] Rate	Apr. 30, 2014 Subsequent Event [Member] 5 1/2% Senior Subordinated Notes Due 2022 [Member] Initial Redemption Period with Proceeds from Equity Offering [Member] Rate	Apr. 30, 2014 Subsequent Event [Member] 5 1/2% Senior Subordinated Notes Due 2022 [Member] Initial Redemption Period with Make-Whole Premium [Member] Rate	Apr. 30, 2014 Subsequent Event [Member] 8 1/4% Senior Subordinated Notes due 2020 [Member] Rate	May 30, 2014 Subsequent Event [Member] 8 1/4% Senior Subordinated Notes due 2020 [Member]
Subsequent Event [Line Items]
Face Value of Notes Issued			$ 1,250,000,000
Debt Instrument, Interest Rate, Stated Percentage	8.25%		5.50%
Selling Price Of Debt Instrument			100.00%
Proceeds From Issuance of Subordinated Long Term Debt Net of Commissions and Fees			1,230,000,000
Debt Instrument, Redemption Price, Percentage				104.125%	102.75%	101.375%	100.00%	105.50%	100.00%
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed								35.00%	100.00%
Debt Instrument, Repurchased Face Amount										$ 815,200,000	$ 181,100,000
Debt Instrument Redemption Price Percentage Make Whole Premium										100.00%
Common Stock, Dividends, Per Share, Declared		$ 0.0625