Other (Charges) Gains, Net (Schedule of Other (Charges) Gains, Net) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016		Mar. 31, 2015
Restructuring Cost and Reserve [Line Items]
Employee termination benefits	$ (5)	[1]	$ (4)
Commercial disputes	0		(1)
Total	(5)		$ (5)
Pension Plan [Member] | Other Activities [Member]
Restructuring Cost and Reserve [Line Items]
One time termination benefits included in Benefit Obligation	$ (1)

[1] Includes $1 million of special termination benefits included in Benefit obligations in the unaudited consolidated balance sheets and is included in the Company's Other Activities segment.