Benefit Obligation and Fair Value of Plan Assets with Obligations in Excess of Plan Assets (Detail) - USD ($) $ in Millions	Sep. 30, 2016	Sep. 30, 2015
U.S. Plans
Accumulated benefit obligation in excess of plan assets
Accumulated benefit obligation, end of year	$ (16)	$ (19)
Fair value of plan assets, end of year	0	0
Projected benefit obligation in excess of plan assets
Benefit obligation, end of year	(16)	(19)
Fair value of plan assets, end of year	0	$ 0
Non-U.S. Plans
Accumulated benefit obligation in excess of plan assets
Accumulated benefit obligation, end of year	(474)
Fair value of plan assets, end of year	415
Projected benefit obligation in excess of plan assets
Benefit obligation, end of year	(474)
Fair value of plan assets, end of year	$ 415

No definition available.

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- Definition

If aggregate disclosures are presented, the aggregate pension accumulated benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 55
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=73719040&loc=d3e4179-114921

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e2417-114920

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- Definition

If aggregate disclosures are presented, the aggregate fair value of plan assets for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

+ References

+ Details

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- Definition

If aggregate disclosures are presented, the aggregate benefit obligation for plans with benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e2417-114920

+ Details

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- Definition

If aggregate disclosures are presented, the aggregate fair value of plan assets for plans with benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

+ References

+ Details

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- Definition

Defined Benefit Plan, Pension Plans With Projected Benefit Obligations In Excess Of Plan Assets [Abstract]

+ References

No definition available.

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