Retirement Benefit Obligations - Schedule of Expected Benefit Payments (Detail) $ in Millions	Jun. 30, 2018 USD ($)
Fiscal year:
2019	$ 81
2020	79
2021	78
2022	79
2023	81
2024-2028	396
United States [Member]
Fiscal year:
2019	25
2020	21
2021	20
2022	20
2023	20
2024-2028	103
Foreign Pension Benefits [Member]
Fiscal year:
2019	47
2020	49
2021	49
2022	51
2023	53
2024-2028	256
Postretirement Benefits [Member]
Fiscal year:
2019	9
2020	9
2021	9
2022	8
2023	8
2024-2028	$ 37

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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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920

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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 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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