Employee Benefit Plans - Assumptions Used to Measure Pension Benefit Obligations for Plans (Detail) (Pension Benefits [Member])	Dec. 31, 2013	Dec. 31, 2012
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted-average discount rate	5.10%	4.17%
Rate of increase in future compensation levels	3.04%	3.30%

Expected rate of compensation increases (for pay-related plans).

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (k)(2)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920

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Period Type:	instant