Retirement Benefits - Assumptions used to measure benefit obligations (Details) - Pension Plan	Jun. 30, 2021	Jun. 30, 2020
United States
Defined Benefit Plan Disclosure [Line Items]
Discount rate	2.55%	2.36%
Average increase in compensation	3.05%	2.98%
Minimum \| Non-U.S. defined benefit plans
Defined Benefit Plan Disclosure [Line Items]
Discount rate	0.25%	0.20%
Average increase in compensation	1.75%	1.75%
Maximum \| Non-U.S. defined benefit plans
Defined Benefit Plan Disclosure [Line Items]
Discount rate	2.95%	3.03%
Average increase in compensation	4.50%	4.50%

Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(1)
-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

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- Definition

Weighted average rate increase of compensation, used to determine benefit obligation of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan.

+ 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 (k)(2)
-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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