Derivative Financial Instruments And Hedging Activities Derivative (Narrative) (Details) In Millions, unless otherwise specified	Sep. 30, 2013 USD ($)	Dec. 31, 2012 USD ($)	Sep. 30, 2013 Foreign Exchange Contract [Member] Other Assets [Member] EUR (€)	Sep. 30, 2013 Foreign Exchange Contract [Member] Other Assets [Member] GBP (£)	Sep. 30, 2013 Foreign Exchange Contract [Member] Other Assets [Member] SEK	Sep. 30, 2013 Foreign Exchange Contract [Member] Derivative Financial Instruments, Liabilities [Member] USD ($)
Derivative [Line Items]
Derivative, Notional Amount		$ 775	€ 610	£ 432	182	$ 1,500
Restricted Cash - Derivative Collateral	$ 48	$ 4