Short And Long-Term Debt Unsecured Notes (Details) (USD $)	3 Months Ended	12 Months Ended												3 Months Ended			3 Months Ended
	Dec. 31, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Apr. 10, 2007 Senior Notes [Member]	Dec. 31, 2012 Senior Notes [Member] 11.50% Senior Notes		Jan. 05, 2011 Senior Notes [Member] 11.50% Senior Notes		Dec. 31, 2012 Senior Notes [Member] 12.00% Senior Notes		Jan. 05, 2011 Senior Notes [Member] 12.00% Senior Notes		Dec. 31, 2012 Senior Notes [Member] 10.50% Senior Notes	Oct. 16, 2012 Senior Notes [Member] 10.50% Senior Notes	Apr. 10, 2007 Senior Toggle Notes [Member]	Dec. 31, 2012 Senior Toggle Notes [Member] 11.00%/11.75% Senior Toggle Notes	Oct. 16, 2012 Senior Toggle Notes [Member] 11.00% Interest Rate	Oct. 16, 2012 Senior Toggle Notes [Member] 11.75% Interest Rate	Jan. 05, 2011 Senior Subordinated Notes [Member]		Apr. 10, 2007 Senior Subordinated Notes [Member]	Dec. 31, 2012 Senior Subordinated Notes [Member] 13.375% Senior Subordinated Notes	Jan. 05, 2011 Senior Subordinated Notes [Member] 13.375% Senior Subordinated Notes
Debt Instrument [Line Items]
Debt instrument, principal amount					$ 1,700,000,000	$ 492,000,000		$ 492,000,000		$ 130,000,000		$ 130,000,000				$ 550,000,000						$ 875,000,000	$ 10,000,000	$ 10,000,000
Interest rate, stated percentage						11.50%	[1]	11.50%	[1]	12.00%	[2]	12.00%	[2]		10.50%			11.00%	11.75%	12.375%	[3]		13.375%	13.375%
Repayments of senior debt		745,000,000	706,000,000	32,000,000										64,000,000			41,000,000
Aggregate amount paid to redeem notes	$ 109,000,000

[1] Consists of $492 million of 11.50% Senior Notes due 2017, less a discount of $3 million.

[2] Consists of $130 million of 12.00% Senior Notes due 2017, less a discount of $1 million.

[3] Consists of $190 million of 12.375% Senior Subordinated Notes due 2015, less a discount of $2 million.