Employee Benefit Plans (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014
Assumed acceptance rate of lump-sum offer	45.00%
U.S. Pension and Postretirement Plans [Member]
Employer contribution	$ 11
Estimated future employer contributions in next fiscal year minimum remaining	39
Estimated future employer contributions in next fiscal year maximum remaining	44
International Pension and Postretirement Plans [Member]
Employer contribution	7
Estimated future employer contributions in next fiscal year minimum remaining	23
Estimated future employer contributions in next fiscal year maximum remaining	28
United States Pension Plan of US Entity, Defined Benefit [Member]
Potential lump-sum settlement charge	$ 50