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Pension and Employee Benefit Plans - Details of Defined Benefit Pension Plan Asset Allocation by Asset Category (Detail) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2013 | Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items] |  |
Target Allocation | 100.00% |
Percentage of Plan Asset | 100.00% | 100.00%
Equity securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target Allocation | 70.00% |
Percentage of Plan Asset |  | 69.00%
Debt securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target Allocation | 30.00% |
Percentage of Plan Asset |  | 31.00%
Minimum [Member] | Equity securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Percentage of Plan Asset | 64.00% |
Minimum [Member] | Debt securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Percentage of Plan Asset | 27.00% |
Maximum [Member] | Equity securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Percentage of Plan Asset | 73.00% |
Maximum [Member] | Debt securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Percentage of Plan Asset | 36.00% |

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- Definition Target allocation of investments of this type to total plan assets presented on a weighted average basis. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c)(i) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2446-114920 + Details
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- Definition Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2446-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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