Long-term Debt and Other Financing (Details2) (USD $)	3 Months Ended		3 Months Ended
	Mar. 31, 2014 Revolving Credit Facility [Member]	Dec. 31, 2013 Revolving Credit Facility [Member]	Mar. 31, 2014 Replaced Credit Facility [Member]	Apr. 30, 2014 Subsequent Event [Member] Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	$ 1,100,000,000.0		$ 1,100,000,000.0
Line of Credit Facility, Expiration Date	Mar. 31, 2019		Apr. 28, 2016
Minimum amount of borrowing capacity for a fixed charge coverage ratio applies	110,000,000
Line of Credit Facility, Current Borrowing Capacity	1,064,500,000.0
Outstanding borrowings on revolving credit facility	240,000,000	90,000,000
Letters of credit, outstanding	67,500,000
Line of credit facility, remaining borrowing capacity	757,000,000
Line Of Credit Facility, Additional Borrowing Capacity				$ 30,000,000