Long-Term Debt - Schedule of Long Term Debt (Details) (USD $) In Millions, unless otherwise specified																									9 Months Ended
	Sep. 30, 2011	Dec. 31, 2010	Sep. 30, 2011 Senior Secured Term Loan due 2014 (2.4961%, 2.4924%, and 11.5% as of September 30, 2011 and 2.5391%, 2.5391%, and 11.5% as of December 31, 2010 for the $1 billion, $400 million, and $280 million tranches, respectively) Term Loans	Dec. 31, 2010 Senior Secured Term Loan due 2014 (2.4961%, 2.4924%, and 11.5% as of September 30, 2011 and 2.5391%, 2.5391%, and 11.5% as of December 31, 2010 for the $1 billion, $400 million, and $280 million tranches, respectively) Term Loans	Sep. 30, 2011 Senior Secured Term Loan due 2014 (2.4961%, 2.4924%, and 11.5% as of September 30, 2011 and 2.5391%, 2.5391%, and 11.5% as of December 31, 2010 for the $1 billion, $400 million, and $280 million tranches, respectively) Term Loans Tranche A Term Loan ($100 billion)	Dec. 31, 2010 Senior Secured Term Loan due 2014 (2.4961%, 2.4924%, and 11.5% as of September 30, 2011 and 2.5391%, 2.5391%, and 11.5% as of December 31, 2010 for the $1 billion, $400 million, and $280 million tranches, respectively) Term Loans Tranche A Term Loan ($100 billion)	Sep. 30, 2011 Senior Secured Term Loan due 2014 (2.4961%, 2.4924%, and 11.5% as of September 30, 2011 and 2.5391%, 2.5391%, and 11.5% as of December 31, 2010 for the $1 billion, $400 million, and $280 million tranches, respectively) Term Loans Tranche A Term Loan ($400 million)	Dec. 31, 2010 Senior Secured Term Loan due 2014 (2.4961%, 2.4924%, and 11.5% as of September 30, 2011 and 2.5391%, 2.5391%, and 11.5% as of December 31, 2010 for the $1 billion, $400 million, and $280 million tranches, respectively) Term Loans Tranche A Term Loan ($400 million)	Sep. 30, 2011 Senior Secured Term Loan due 2014 (2.4961%, 2.4924%, and 11.5% as of September 30, 2011 and 2.5391%, 2.5391%, and 11.5% as of December 31, 2010 for the $1 billion, $400 million, and $280 million tranches, respectively) Term Loans Tranche B Term Loan	Dec. 31, 2010 Senior Secured Term Loan due 2014 (2.4961%, 2.4924%, and 11.5% as of September 30, 2011 and 2.5391%, 2.5391%, and 11.5% as of December 31, 2010 for the $1 billion, $400 million, and $280 million tranches, respectively) Term Loans Tranche B Term Loan	Sep. 30, 2011 Senior Notes due 2019 (8.125%) Senior Notes	Dec. 31, 2010 Senior Notes due 2019 (8.125%) Senior Notes	Sep. 30, 2011 Senior Notes due 2019 (11.875%) Senior Notes	Dec. 31, 2010 Senior Notes due 2019 (11.875%) Senior Notes	Sep. 30, 2011 Senior Notes due 2019 (9.375%) Senior Notes	Dec. 31, 2010 Senior Notes due 2019 (9.375%) Senior Notes	Sep. 30, 2011 Senior Notes Senior Notes due 2014 (9.25%)	Dec. 31, 2010 Senior Notes Senior Notes due 2014 (9.25%)	Sep. 30, 2011 Senior Notes Floating Rate Senior Notes due 2015 (4.2018% as of September 30, 2011 and 4.344% as of December 31, 2010)	Dec. 31, 2010 Senior Notes Floating Rate Senior Notes due 2015 (4.2018% as of September 30, 2011 and 4.344% as of December 31, 2010)	Sep. 30, 2011 Senior Notes Senior Notes due 2017 (8.75%)	Dec. 31, 2010 Senior Notes Senior Notes due 2017 (8.75%)	Sep. 30, 2011 Senior Notes Senior Notes due 2018 (10.0%)	Dec. 31, 2010 Senior Notes Senior Notes due 2018 (10.0%)	Sep. 30, 2011 Convertible Senior Notes due 2012 (3.5%) Convertible Senior Notes	Dec. 31, 2010 Convertible Senior Notes due 2012 (3.5%) Convertible Senior Notes	Sep. 30, 2011 Convertible Senior Notes due 2016 (6.5%) Convertible Senior Notes	Dec. 31, 2010 Convertible Senior Notes due 2016 (6.5%) Convertible Senior Notes	Sep. 30, 2011 Convertible Senior Notes due 2011 (5.25%) Convertible Senior Notes	Dec. 31, 2010 Convertible Senior Notes due 2011 (5.25%) Convertible Senior Notes	Sep. 30, 2011 Convertible Senior Notes due 2015 (7.0%) Convertible Senior Notes	Dec. 31, 2010 Convertible Senior Notes due 2015 (7.0%) Convertible Senior Notes	Sep. 30, 2011 Convertible Senior Notes due 2015 Series B (7.0%) Convertible Senior Notes	Dec. 31, 2010 Convertible Senior Notes due 2015 Series B (7.0%) Convertible Senior Notes	Sep. 30, 2011 Convertible Senior Notes due 2013 (15.0%) Convertible Senior Notes	Dec. 31, 2010 Convertible Senior Notes due 2013 (15.0%) Convertible Senior Notes	Sep. 30, 2011 Convertible Senior Discount Notes due 2013 (9.0%) Convertible Senior Notes	Dec. 31, 2010 Convertible Senior Discount Notes due 2013 (9.0%) Convertible Senior Notes	Sep. 30, 2011 Commercial Mortgage Commercial Mortgage due 2015 (9.86%)	Dec. 31, 2010 Commercial Mortgage Commercial Mortgage due 2015 (9.86%)	Sep. 30, 2011 Capital Leases	Dec. 31, 2010 Capital Leases	Sep. 30, 2011 Senior Notes due 2014 (9.25%)	Sep. 30, 2011 Senior Notes due 2019 (11.875%)	Jan. 31, 2011 Senior Notes due 2019 (11.875%)	Sep. 30, 2011 Senior Notes due 2019 (9.375%)	Sep. 30, 2011 Senior Notes due 2019 (8.125%)	Sep. 30, 2011 Convertible Senior Notes due 2011 (5.25%)	Mar. 31, 2011 Convertible Senior Notes due 2011 (5.25%)	Mar. 31, 2010 Convertible Senior Notes due 2011 (5.25%)	Sep. 30, 2011 Convertible Senior Notes due 2012 (3.5%)	Sep. 30, 2011 Convertible Senior Notes due 2013 (15.0%)	Jul. 15, 2011 Convertible Senior Notes due 2013 (15.0%)	Sep. 30, 2011 Convertible Senior Discount Notes due 2013 (9.0%)	Mar. 31, 2011 Convertible Senior Discount Notes due 2013 (9.0%)	Sep. 30, 2011 Convertible Senior Notes due 2015 (7.0%)	Sep. 30, 2011 Convertible Senior Notes due 2015 Series B (7.0%)	Sep. 30, 2011 Convertible Senior Notes due 2016 (6.5%)	Sep. 30, 2011 Embedded derivative contracts	Dec. 31, 2010 Embedded derivative contracts
Long-term debt
Total Debt Obligations	$ 7,747	$ 6,527	$ 1,680	$ 1,680	$ 1,000		$ 400		$ 280		$ 1,200	$ 0	$ 605	$ 0	$ 500	$ 0	$ 807	$ 1,250	$ 300	$ 300	$ 700	$ 700	$ 640	$ 640	$ 274	$ 294	$ 201	$ 201	$ 0	$ 196	$ 200	$ 200	$ 275	$ 275	$ 272	$ 400	$ 0	$ 295	$ 65	$ 67	$ 28	$ 29											$ 272
Total Unamortized (Discount) Premium	(62.0)	(79.0)	(1.0)	(1.0)							(9.0)	0	(10.0)	0	(9.0)	0	4.0	7.0					(11.0)	(12.0)	(14.0)	(29.0)			0	(20.0)	(3.0)	(3.0)													(11.0)														(9.0)	(21.0)
Carrying Value of Debt	7,685	6,448
Less current portion	(265)	(180)
Long-Term Debt, less current portion	7,420	6,268
Reclassification to current portion of long-term debt																									$ 274
Debt instrument, stated interest rate (as a percent)											8.125%		11.875%		9.375%		9.25%				8.75%		10.00%		3.50%		6.50%		5.25%		7.00%		7.00%		15.00%		9.00%		9.86%				9.25%	11.875%		9.375%	8.125%	5.25%	5.25%	5.25%	3.50%	15.00%		9.00%	9.00%	7.00%	7.00%	6.50%
Debt instrument, effective interest rate at end of period (as a percent)					2.4961%	2.5391%	2.4924%	2.5391%	11.50%	11.50%									4.2018%	4.344%