Retirement Benefits - Schedule of Estimated Benefit Payments are Expected to be Paid (Details) $ in Millions	Jun. 30, 2025 USD ($)
Other Postretirement Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Estimated future benefit payments in the year ending June 30, 2026	$ 6
Estimated future benefit payments in the year ending June 30, 2027	6
Estimated future benefit payments in the year ending June 30, 2028	6
Estimated future benefit payments in the year ending June 30, 2029	6
Estimated future benefit payments in the year ending June 30, 2030	5
Estimated future benefit payments in the aggregate for the five years ending June 30, 2031 through June 30, 2035	24
United States \| Pension Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Estimated future benefit payments in the year ending June 30, 2026	273
Estimated future benefit payments in the year ending June 30, 2027	275
Estimated future benefit payments in the year ending June 30, 2028	276
Estimated future benefit payments in the year ending June 30, 2029	286
Estimated future benefit payments in the year ending June 30, 2030	279
Estimated future benefit payments in the aggregate for the five years ending June 30, 2031 through June 30, 2035	1,387
Non-U.S. Pension Benefits \| Pension Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Estimated future benefit payments in the year ending June 30, 2026	104
Estimated future benefit payments in the year ending June 30, 2027	108
Estimated future benefit payments in the year ending June 30, 2028	110
Estimated future benefit payments in the year ending June 30, 2029	97
Estimated future benefit payments in the year ending June 30, 2030	80
Estimated future benefit payments in the aggregate for the five years ending June 30, 2031 through June 30, 2035	$ 614

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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-5

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

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

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