Derivative Financial Instruments and Hedging Activities (Details 1) (USD $) In Millions	Jun. 30, 2011
US dollar [Member]
Foreign Currency Derivatives Cashflow Hedges, Sell
Foreign currency derivatives cashflow hedges, Sell	$ 325
Foreign currency derivatives cashflow hedges, Fair value	10
Euro [Member]
Foreign Currency Derivatives Cashflow Hedges, Sell
Foreign currency derivatives cashflow hedges, Sell	161
Foreign currency derivatives cashflow hedges, Fair value	(5)
Japanese yen [Member]
Foreign Currency Derivatives Cashflow Hedges, Sell
Foreign currency derivatives cashflow hedges, Sell	64
Foreign currency derivatives cashflow hedges, Fair value	$ (4)