Retirement Benefit Obligations - Schedule of Expected Benefit Payments (Detail) $ in Millions	Jun. 30, 2020 USD ($)
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2021	$ 84
2022	75
2023	74
2024	73
2025	72
2026-2030	357
Postretirement Benefits
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2021	9
2022	9
2023	8
2024	8
2025	8
2026-2030	33
Foreign Pension Benefits
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2021	52
2022	46
2023	46
2024	46
2025	45
2026-2030	227
Domestic
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2021	23
2022	20
2023	20
2024	19
2025	19
2026-2030	$ 97

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

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- Definition

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

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- Definition

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

+ References

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

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

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

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