For defined benefit pension plans, the actuarial present value of benefits (whether vested or nonvested) attributed by the pension benefit formula to employee service rendered before a specified date and based on employee service and compensation (if applicable) before that date. The accumulated benefit obligation differs from the projected benefit obligation in that it includes no assumption about future compensation levels. For plans with flat-benefit or nonpay-related pension benefit formulas, the accumulated benefit obligation and the projected benefit obligation are the same.

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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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- Definition

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

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Pension and Severance Benefits (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended					12 Months Ended
	Dec. 31, 2012	Dec. 31, 2012 Foreign Plans	Dec. 31, 2011 Foreign Plans	Dec. 31, 2012 Domestic Plans	Dec. 31, 2011 Domestic Plans	Dec. 31, 2012 Domestic Plans Equity securities	Dec. 31, 2012 Domestic Plans Fixed income securities
Defined Benefit Plan and Severance
Short-term portion of the unfunded status		$ 5	$ 9
Accumulated benefit obligation		45	46	27	27
Prior service costs and actuarial loss included in Accumulated Other Comprehensive Income and expected to be included in net periodic pension cost during the next twelve months	1
Target allocation						75.00%	25.00%
Expected employer contributions		$ 7		$ 1