Debt (Debt Extinguishment) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2011		Jun. 30, 2010		Jun. 30, 2011		Jun. 30, 2010
Debt reductions	$ 0	[1]	$ 108	[1]	$ 129	[1]	$ 228	[1]
Pre-tax early debt extinguishment costs	$ 0	[2]	$ 21	[2]	$ 32	[2]	$ 26	[2]
Notes Interest Rates Ranging From 5.3% To 7.4% Due From 2010 to 2027 [Member] | Minimum [Member]
Interest rate			5.25%				5.25%
Original maturity period							2010
Notes Interest Rates Ranging From 5.3% To 7.4% Due From 2010 to 2027 [Member] | Maximum [Member]
Interest rate			9.375%				9.375%
Original maturity period							2027
Notes Interest Rates Ranging From 6.2% To 9.375% Due From 2018 to 2025 [Member] | Minimum [Member]
Interest rate	6.20%				6.20%
Original maturity period					2018
Notes Interest Rates Ranging From 6.2% To 9.375% Due From 2018 to 2025 [Member] | Maximum [Member]
Interest rate	9.375%				9.375%
Original maturity period					2025
Notes Interest Rates Ranging From 5.3% To 9.375% Due From 2015 to 2019 [Member] | Minimum [Member]
Interest rate			5.30%				5.30%
Original maturity period			2015
Notes Interest Rates Ranging From 5.3% To 9.375% Due From 2015 to 2019 [Member] | Maximum [Member]
Interest rate			9.375%				9.375%
Original maturity period			2019

[1] Reductions related to notes with interest rates ranging from 5.3% to 9.375% with original maturities from 2015 to 2019 for the three months ended June 30, 2010, and from 6.2% to 9.375% with original maturities from 2018 to 2025 and from 5.25% to 9.375% with original maturities from 2010 to 2027 for the six months ended June 30, 2011 and 2010, respectively.

[2] Amounts are included in Restructuring and Other Charges in the accompanying consolidated statements of operations.