Fair Value (Significance Of Input To The Fair Value Measurement) (Details) (USD $) In Millions	Sep. 30, 2011		Dec. 31, 2010
Recurring Basis [Member]
Derivative asset included in other current assets	$ 20		$ 5
Derivative asset included in other non-current assets	7		168
Derivative liabilities included in long-term debt	16		162
Derivative liabilities included in other current liabilities	11		12
Derivative liabilities included in other non-current liabilities	14		27
Recurring Basis [Member] | Estimate of Fair Value [Member]
Total assets	33		179
Total liabilities	41	[1]	201
Recurring Basis [Member] | Estimate of Fair Value [Member] | Bifurcated Conversion Feature [Member]
Derivative liabilities, fair value	16	[1]	162	[2]
Recurring Basis [Member] | Estimate of Fair Value [Member] | Interest Rate Contract [Member]
Derivative assets	7	[3]	7	[4]
Derivative liabilities, fair value	14	[1]	27	[2]
Recurring Basis [Member] | Estimate of Fair Value [Member] | Foreign Exchange Contract [Member]
Derivative assets	4	[3]	4	[4]
Derivative liabilities, fair value	11	[1]	12	[2]
Recurring Basis [Member] | Estimate of Fair Value [Member] | Securities Available-For-Sale [Member]
Securities available-for-sale	6	[5]	6	[5]
Recurring Basis [Member] | Estimate of Fair Value [Member] | Call Options [Member]
Derivative assets	16	[3]	162	[4]
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member]
Total assets	11		11
Total liabilities	25	[1]	39
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Interest Rate Contract [Member]
Derivative assets	7	[3]	7	[4]
Derivative liabilities, fair value	14	[1]	27	[2]
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Foreign Exchange Contract [Member]
Derivative assets	4	[3]	4	[4]
Derivative liabilities, fair value	11	[1]	12	[2]
Recurring Basis [Member] | Significant Unobservable Inputs (Level 3) [Member]
Total assets	22		168
Total liabilities	16	[1]	162
Recurring Basis [Member] | Significant Unobservable Inputs (Level 3) [Member] | Bifurcated Conversion Feature [Member]
Derivative liabilities, fair value	16	[1]	162	[2]
Recurring Basis [Member] | Significant Unobservable Inputs (Level 3) [Member] | Securities Available-For-Sale [Member]
Securities available-for-sale	6	[5]	6	[5]
Recurring Basis [Member] | Significant Unobservable Inputs (Level 3) [Member] | Call Options [Member]
Derivative assets	16	[3]	162	[4]
Bifurcated Conversion Feature [Member]
Derivative liabilities, fair value	16		162
Interest Rate Contract [Member]
Derivative assets	7	[6]	7	[6]
Derivative liabilities, fair value	14	[6]	27	[6]
Foreign Exchange Contract [Member]
Derivative assets	4	[6]	4	[6]
Derivative liabilities, fair value	11	[6]	12	[6]
Call Options [Member]
Derivative assets	$ 16		$ 162

[1] Included in current portion of long-term debt ($16 million), accrued expenses and other current liabilities ($11 million) and other non- current liabilities ($14 million) on the Consolidated Balance Sheet.

[2] Included in long-term debt ($162 million), accrued expenses and other current liabilities ($12 million) and other non-current liabilities ($27 million) on the Consolidated Balance Sheet.

[3] Included in other current assets ($20 million) and other non-current assets ($7 million) on the Consolidated Balance Sheet.

[4] Included in other current assets ($5 million) and other non-current assets ($168 million) on the Consolidated Balance Sheet.

[5] Included in other non-current assets on the Consolidated Balance Sheet.

[6] Instruments are in net loss positions as of September 30, 2011 and December 31, 2010.