RETIREMENT MEDICAL PLANS - Retiree Medical Plan Estimated Future Benefit Payments (Details) - U.S. Retiree Medical Plan $ in Millions	Sep. 30, 2017 USD ($)
Gross Benefit Payments
Fiscal 2018	$ 20
Fiscal 2019	15
Fiscal 2020	14
Fiscal 2021	14
Fiscal 2022	13
Fiscal 2023 – 2027	31
Gross Receipts
Fiscal 2018	1
Fiscal 2019	0
Fiscal 2020	0
Fiscal 2021	0
Fiscal 2022	0
Fiscal 2023 – 2027	$ 1

Defined Benefit Plan, Expected Future Receipts, Five Fiscal Years Thereafter

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Defined Benefit Plan, Expected Future Receipts, Next Twelve Months

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- Definition

Defined Benefit Plan, Expected Future Receipts, Year Five

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Defined Benefit Plan, Expected Future Receipts, Year Four

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Defined Benefit Plan, Expected Future Receipts, Year Three

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Defined Benefit Plan, Expected Future Receipts, Year Two

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- Definition

Retiree Medical Plan Estimated Future Benefit Payments.

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- Definition

Retiree Medical Plan Estimated Future Gross Receipts

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- Definition

Amount of benefits for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following latest fiscal year.

+ 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 (f)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

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- Definition

Amount of benefits for defined benefit plan expected to be paid in next fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in fifth fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in fourth fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in third fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in second fiscal year following latest fiscal year.

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