Postretirement Benefits (Postretirement Benefit Adjustments Recognized In Other Comprehensive (Loss) Income) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
U.S. Postretirement Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Curtailments	$ 5
Current year actuarial gain	(76)
Amortization of actuarial loss	(7)
Amortization of prior service credit	24
Total recognized in other comprehensive income	(54)
Foreign Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Curtailments	0
Current year actuarial gain	0
Amortization of actuarial loss	12
Amortization of prior service credit	0
Total recognized in other comprehensive income	$ 12