Pension And Post-Retirement Benefits (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Defined Benefit Plan Disclosure [Line Items]
Cost of 401(k) Retirement Savings Plan	$ 3	$ 2	$ 8	$ 7
Pension Plans, International [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer contributions to pension plans			6
U.S. Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer contributions to pension plans			7
Scenario, Forecast [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer contributions to pension plans			13
Scenario, Forecast [Member] | Pension Plans, International [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer contributions to pension plans			6
Scenario, Forecast [Member] | U.S. Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer contributions to pension plans			$ 7