Postretirement Benefits - Asset Allocation of Plan Assets of Non-U.S. Plans (Detail) (Non-U.S. Plans)	Sep. 30, 2013
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets	100.00%
Debt Securities
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets	75.00%
Equity securities
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets	5.00%
Cash
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets	2.00%
Other Investments
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets	18.00%

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.

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=21915506&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=21915506&loc=d3e1928-114920

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph d(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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