Employee Benefit Plans (Narrative) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013
Pension contribution made to United Kingdom trust	$ 25
U.S. Pension and Postretirement Plans [Member]
Employer contribution	40
Estimated future employer contributions in next fiscal year minimum remaining	15
Estimated future employer contributions in next fiscal year maximum remaining	20
International Pension and Postretirement Plans [Member]
Employer contribution	65
Estimated future employer contributions in next fiscal year minimum remaining	0
Estimated future employer contributions in next fiscal year maximum remaining	$ 5