Retirement Benefit Obligations - Schedule of Expected Benefit Payments (Detail) $ in Millions	Jun. 30, 2019 USD ($)
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2020	$ 92
2021	74
2022	76
2023	77
2024	76
2025-2029	377
Postretirement Benefits [Member]
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2020	9
2021	9
2022	9
2023	9
2024	8
2025-2029	35
Foreign Pension Benefits [Member]
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2020	56
2021	44
2022	46
2023	47
2024	47
2025-2029	239
United States [Member]
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2020	27
2021	21
2022	21
2023	21
2024	21
2025-2029	$ 103

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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://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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- Definition

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

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- Definition

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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