Retirement Plans Assumed Health Care Cost Trend Rates (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Sep. 30, 2013
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Effect of One Percentage Point Decrease on Accumulated Postretirement Benefit Obligation	$ 7
United States Pension Plan of US Entity, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Health care cost trend rates assumed for next year	9.13%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)	5.00%
Year the rate reaches the ultimate trend rate	2030
Domestic Pension Plan of Foreign Entity, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Health care cost trend rates assumed for next year	7.30%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)	4.80%
Year the rate reaches the ultimate trend rate	2029

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Amount of effect of a one-percentage-point decrease in the assumed health care cost trend rates on the accumulated postretirement benefit obligation for health care benefits.

+ References

+ Details

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- Definition

The assumed health care cost trend rate for the next year used to measure the expected cost of benefits covered by the plan (gross eligible charges). This is based upon the annual rate of change in the cost of health care benefits currently provided by the postretirement benefit plan, due to factors other than changes in the composition of the plan population by age and dependency status.

+ 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 (l)

-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

-Glossary Health Care Cost Trend Rate

-URI http://asc.fasb.org/extlink&oid=6514820

+ Details

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- Definition

The ultimate trend rate for health care costs.

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- Definition

Year the ultimate health care cost trend rate is expected to be reached, in CCYY format.

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