Financial Instruments, Derivatives and Fair Value Measures (Details 3) (USD $)	Sep. 30, 2012	Dec. 31, 2011
Fair value, asset and liability measures
Long-term Investment Securities	$ 380,383,000	$ 378,225,000
Equity securities
Fair value, asset and liability measures
Long-term Investment Securities	319,000,000	317,000,000
Carrying value
Fair value, asset and liability measures
Total long-term debt	(13,073,000,000)	(13,067,000,000)
Foreign currency forward exchange contracts, assets	131,000,000	280,000,000
Foreign currency forward exchange contracts, liabilities	(182,000,000)	(181,000,000)
Interest rate swap derivative financial instruments, assets	759,000,000	598,000,000
Carrying value | Equity securities
Fair value, asset and liability measures
Long-term Investment Securities	319,000,000	317,000,000
Carrying value | Other
Fair value, asset and liability measures
Long-term Investment Securities	61,000,000	61,000,000
Fair value
Fair value, asset and liability measures
Total long-term debt	(15,555,000,000)	(15,129,000,000)
Foreign currency forward exchange contracts, assets	131,000,000	280,000,000
Foreign currency forward exchange contracts, liabilities	(182,000,000)	(181,000,000)
Interest rate swap derivative financial instruments, assets	759,000,000	598,000,000
Fair value | Equity securities
Fair value, asset and liability measures
Long-term Investment Securities	319,000,000	317,000,000
Fair value | Other
Fair value, asset and liability measures
Long-term Investment Securities	$ 50,000,000	$ 42,000,000