Pension And Post-Retirement Benefits (Components Of The Net Periodic Benefit Costs) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
United States [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 0	$ 0	$ 0
Interest cost	2	2	4	4
Expected return on plan assets	(1)	(4)	(2)	(7)
Amortization	0	0	0	0
Settlement Loss Recognized	0	1	0	1
Net periodic benefit cost	1	(1)	2	(2)
International [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	2	2	4	4
Interest cost	1	2	3	4
Expected return on plan assets	(3)	(3)	(6)	(6)
Amortization	1	0	2	0
Settlement Loss Recognized	0	0	0	0
Net periodic benefit cost	1	1	3	2
Post-Retirement Medical Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0	0	0
Interest cost	0	0	0	0
Expected return on plan assets	0	0	0	0
Amortization	(1)	(2)	(2)	(2)
Settlement Loss Recognized	0	0	0	0
Net periodic benefit cost	$ (1)	$ (2)	$ (2)	$ (2)