Fair Value of Postretirement Assets (Parenthetical) (Detail)
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Dec. 31, 2012
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Defined Benefit Plan Disclosure [Line Items] | |
Hedge funds, minimum number of days notice prior to redemption | 30 days |
Hedge funds, maximum number of days notice prior to redemption | 90 days |
X | ||||||||||
- Definition
Redemption Notice Period, Lower Limit No definition available.
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X | ||||||||||
- Definition
Redemption Notice Period Upper Limit No definition available.
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X | ||||||||||
- Details
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