Pension And Post-Retirement Benefits (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
Cost of 401(k) Retirement Savings Plan	$ 6	$ 2
Pension Plans, International [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer contributions to pension plans	2
U.S. Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer contributions to pension plans	0
Scenario, Forecast [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer contributions to pension plans	8
Scenario, Forecast [Member] | U.S. Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer contributions to pension plans	$ 0