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Amounts in Accumulated Other Comprehensive Income Expected to be Recognized as Components of Net Periodic Benefit Cost (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Pension Benefit Costs
Defined Benefit Plan Disclosure [Line Items]
Net loss (gain) to be recognized in other comprehensive income	$ 2
Postemployment Benefit Costs
Defined Benefit Plan Disclosure [Line Items]
Net loss (gain) to be recognized in other comprehensive income	$ (1)

X

- Definition

Amount included in accumulated other comprehensive income (AOCI) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position, including gain (loss), prior service cost (credit), and transition asset (obligation).

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

X

- Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration