Financial Instruments and Fair Value Measures (Details 2) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Interest rate swaps \| Fair value hedges
Gain (loss) on derivatives
Income (expense) and gain (loss) reclassified into income	$ (81)
Income (expense)	81
Foreign currency forward exchange contracts \| Not designated as hedging instrument
Gain (loss) on derivatives
Income (expense) and gain (loss) reclassified into income	(23)	30	30
Foreign currency forward exchange contracts \| Cash flow hedges
Gain (loss) on derivatives
(Loss) gain recognized in other comprehensive (loss) income	(11)	(2)	75
Income (expense) and gain (loss) reclassified into income	$ 24	$ 18	$ 45

The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

+ References+ Details

The amount of net gains and losses recognized in income during the period on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges, on derivative instruments designated and qualifying as hedging instruments in cash flow hedges, and on derivative instruments not designated as hedging instruments.

+ References+ Details

- Definition

The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

+ References+ Details