Pension And Post-Retirement Benefits (Pension And Post-Retirement Benefits And Liabilities) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Dec. 31, 2012
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]
Defined Contribution Plan, Cost Recognized	$ 6	$ 2
Retiree medical liability	47	47
Pension liability	88	91
Subtotal	135	138
Less: current portion (included in other current liabilities)	(3)	(3)
Pension and post-retirement benefits	$ 132	$ 135

This represents the entire liability recognized in the balance sheet that is associated with the defined benefit pension plans.

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+ Details

- Definition

This represents the entire liability recognized in the balance sheet that is associated with other postretirement defined benefit plans (excluding pension plans).

+ References

+ Details

- Definition

For a classified balance sheet, the amount recognized in balance sheet as a current liability associated with an underfunded defined benefit plan.

+ References+ Details

- Definition

This represents the entire liability recognized in the balance sheet that is associated with the defined benefit plans.

+ References

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+ Details

- Definition

This represents the noncurrent liability for underfunded plans recognized in the balance sheet that is associated with the defined benefit pension plans and other postretirement defined benefit plans.

+ References

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+ Details