Stockholders' Equity, Restricted Stock, Stock Options and Noncontrolling Interests (Narrative) (Details) (USD $)	12 Months Ended							12 Months Ended				3 Months Ended	12 Months Ended					12 Months Ended		12 Months Ended						1 Months Ended	12 Months Ended			12 Months Ended
	Dec. 31, 2012	Dec. 31, 2010	Dec. 31, 2011	Dec. 31, 2009	Dec. 31, 2012 Four Point Five Zero Percentage Cumulative Comvertible Preferred Stock [Member]	Dec. 31, 2012 Five Point Seven Five Percentage Cumulative Convertible Preferred Stock [Member]	Dec. 31, 2012 Five Point Zero Zero Percentage Cumulative Convertible Preferred Stock Series Two Thousand And Five B [Member]	Dec. 31, 2012 Restricted stock	Dec. 31, 2011 Restricted stock	Dec. 31, 2010 Restricted stock	Dec. 31, 2012 Unvested Stock Options	Dec. 31, 2011 Stock Options	Dec. 31, 2012 Stock Options	Dec. 31, 2011 Stock Options	Dec. 31, 2010 Deferred Charges	Dec. 31, 2012 Minimum Four Point Five Zero Percentage Cumulative Comvertible Preferred Stock [Member]	Dec. 31, 2012 Minimum Five Point Seven Five Percentage Cumulative Convertible Preferred Stock [Member]	Dec. 31, 2012 Long-Term Incentive Plan	Dec. 31, 2012 Long-Term Incentive Plan Maximum	Dec. 31, 2012 Long-Term Incentive Plan Non-Employee Director	Dec. 31, 2011 Long-Term Incentive Plan Non-Employee Director	Dec. 31, 2010 Long-Term Incentive Plan Non-Employee Director	Dec. 31, 2012 Long-Term Incentive Plan Employees and Consultants	Dec. 31, 2011 Long-Term Incentive Plan Employees and Consultants	Dec. 31, 2010 Long-Term Incentive Plan Employees and Consultants	Dec. 30, 2010 2003 Stock Incentive Plan	Dec. 31, 2012 2003 Stock Incentive Plan	Dec. 31, 2011 2003 Stock Incentive Plan	Dec. 31, 2012 2003 Stock Incentive Plan Maximum	Dec. 31, 2012 2003 Stock Award Plan	Dec. 31, 2012 2003 Stock Award Plan Non-Employee Director	Dec. 31, 2011 2003 Stock Award Plan Non-Employee Director	Dec. 31, 2010 2003 Stock Award Plan Non-Employee Director	Dec. 31, 2012 2003 Stock Award Plan Non-Employee Director Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Debt Conversion, Original Debt, Interest Rate of Debt		$ 11,000,000
Debt Conversion, Converted Instrument, Shares Issued		298,500
Debt Conversion, Converted Instrument, Amount		9,000,000
Gain (loss) on conversion/exchange of convertible senior note to common stock		2,000,000													0
Conversion of Stock, Company Market Trigger																$ 250,000	$ 25,000
Debt Instrument Interest Rate Percentage					4.50%	5.75%	5.00%
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures																				170,151	68,824	87,500	5,000,000	4,500,000	5,800,000	100,000	0	400,000			30,000	10,000	10,000
Remaining Shares Available For Issuance	82,500																	10,700,000												0
Common Stock, Shares, Issued	666,468,000	655,251,000	660,888,000	648,549,000																											10,000
Common Stock, Shares Authorized	1,000,000,000		1,000,000,000																49,500,000										10,000,000					100,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value								174,000,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized								289,000,000			0
Restricted Stock Vesting Period								2 years 4 months 20 days
Recognized reductions in tax benefits								$ 32,000,000	$ 23,000,000	$ 15,000,000		$ 0	$ 2,000,000	$ 3,000,000