Pension And Post-Retirement Benefits (Components Of The Net Periodic Benefit Costs) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
U.S. Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 2
Interest cost	2	2
Expected return on plan assets	(3)	(3)
Amortization	1	1
Net periodic benefit cost	0	2
Pension Plans, International [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	3	2
Interest cost	2	2
Expected return on plan assets	(3)	(2)
Amortization	1	1
Net periodic benefit cost	3	3
Post-Retirement Medical Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0
Interest cost	0	1
Expected return on plan assets	0	0
Amortization	0	0
Net periodic benefit cost	$ 0	$ 1