Restructuring and Other Items - Summary of Significant Activities Within, and Components of Restructuring Obligations (Parenthetical) (Detail)	3 Months Ended
Jun. 30, 2013
Leases [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Activities, Completion Date	Mar. 31, 2015
Employee severance and benefits [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Activities, Completion Date	Jun. 30, 2014

Date the exit and disposal activities were completed or are expected to be completed, in CCYY-MM-DD format.

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

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section P

-Subsection 4

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Name:	us-gaap_RestructuringAndRelatedActivitiesCompletionDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration