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Pension and Other Postemployment Benefits (Details Textuals) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Pensions
Defined Benefit Plan Disclosure [Line Items]
Excluded from total investments	$ (87)	$ (36)
Estimated 2014 amortization of prior service costs (credits) from AOCI	8
OPEB
Defined Benefit Plan Disclosure [Line Items]
Excluded from total investments	(9)	(10)
Estimated 2014 amortization of prior service costs (credits) from AOCI	$ (176)

The aggregate amount in accumulated other comprehensive income expected to be recognized as a component of net periodic benefit cost over the fiscal year that follows the most recent annual statement of financial position presented, including the net gain (loss), net prior service cost or credit, and net transition asset or obligation.

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