Pensions and Other Benefit Programs (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
United States
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Contributions By Employer	$ 3	$ 10
Foreign
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Contributions By Employer	9	12
Nonpension Postretirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Contributions By Employer	$ 6	$ 7