Long-Term Debt Long Term Debt (Schedule of Equity Units) (Details) (USD $) Share data in Millions, unless otherwise specified	12 Months Ended		0 Months Ended				0 Months Ended
	Dec. 31, 2013		Jun. 07, 2013 Capital Unit, Class A		Sep. 30, 2013 Capital Unit, Class A Remarketable Subordinated Notes	Jun. 07, 2013 Capital Unit, Class A Remarketable Subordinated Notes	Jun. 07, 2013 Capital Unit, Class B		Sep. 30, 2013 Capital Unit, Class B Remarketable Subordinated Notes	Jun. 07, 2013 Capital Unit, Class B Remarketable Subordinated Notes
Capital Unit [Line Items]
Units Issued			0				0
Total Net Proceeds			$ 533,500,000				$ 553,500,000
Total Long-term Debt						550,000,000				550,000,000
RSN Annual Interest Rate					1.07%				1.18%
Stock Purchase Contract Annual Rate			5.055%				4.82%
Stock Purchase Contract Liability	139,000,000	[1]	76,700,000	[1]			79,300,000	[1]
Total payments	$ 17,000,000

[1] Payments of $17 million were made in 2013. The stock purchase contract liability was $139 million at December 31, 2013.