Long-Term Borrowings (Narrative) (Details) (USD $)	6 Months Ended						3 Months Ended				3 Months Ended		6 Months Ended			3 Months Ended				3 Months Ended		1 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010		Mar. 31, 2011	Mar. 31, 2011 3 Year 5.25% Fixed Rate Notes [Member]	Mar. 31, 2011 7 year 6.625% Fixed Rate Notes [Member]	Jun. 30, 2011 2013 Series A Notes [Member]	Mar. 31, 2011 2013 Series A Notes [Member]	May 02, 2011 2013 Series A Notes [Member]	May 02, 2011 2013 Series A Notes [Member] Series A Notes [Member]	Jun. 30, 2011 2014 Series A Notes [Member]	May 02, 2011 2014 Series A Notes [Member]	Jun. 30, 2011 Senior Secured First Lien Term Loan [Member]	Jun. 30, 2011 Minimum [Member]	Jun. 30, 2011 Maximum [Member]	Jun. 30, 2011 Series A Notes [Member]	Mar. 31, 2011 Series A Notes [Member]	May 02, 2011 Series A Notes [Member]	Jun. 30, 2011 Series B Notes [Member]	Mar. 31, 2011 Series C Notes [Member]	Jun. 30, 2011 Series C Notes [Member]	Jun. 30, 2011 7% Series A Notes [Member]	Jun. 30, 2011 7% Series C Notes [Member]	Jun. 30, 2011 First Lien Facility [Member]	Jun. 30, 2011 Voting Stock [Member]	Jun. 30, 2011 Non-Voting stock [Member]
Refinanced portion of the first lien facility																								$ 3,000,000,000
Amended First Lien Facility, expiration date																								August 2015
LIBOR Basis spread																								4.50%
LIBOR floor																								1.75%
Percentage of first tier subsidiaries securing Amended First Lien Facility																									65.00%	100.00%
Percentage of non-regulated entities														44.00%	65.00%
Repurchase all or portion of the notes at purchase price, Series A and C notes																	101.00%			101.00%
Repayments of term debt	6,275,600,000	7,887,100,000	[1]										500,000,000
Redemption of notes								1,000,000,000	1,100,000,000			1,400,000,000						2,500,000,000
Acceleration of FSA amortization							66,000,000	25,000,000			47,000,000		15,000,000			113,000,000
Separate consents received from holders																						10,900,000,000
Series A Notes tendered and accepted for exchange																						8,760,000,000
Series A Notes separately consented including a majority of each maturity																						2,170,000,000
Principal amount of Series C Notes																							8,760,000,000
Issuance of notes																				2,000,000,000
Face amount					1,300,000,000	700,000,000
Debt instrument stated interest rate				5.25%		6.625%		7.00%								7.00%			10.25%		7.00%
Percentage of aggregate principal amount redeemed								102.00%		102.00%
Concent Fees Paid To Series A Note Holders	$ 27,000,000

[1] These restated balances were disclosed in Note 26 of the Company's Form 10-K for the year ended December 31, 2010.