Debt - Schedule of Long-Term Debt (Details) - USD ($) $ in Millions	Jun. 30, 2025	Jun. 30, 2024
Debt Instrument [Line Items]
Long-term debt	$ 7,501	$ 8,412
Other long-term debt (includes finance leases)	109	105
Deferred debt issuance costs	(54)	(58)
Less: Long-term debt payable within one year	7	1,255
Long-term debt	$ 7,494	7,157
3.30% Fixed-rate medium term notes, due 2025 | Medium-Term Notes
Debt Instrument [Line Items]
Interest rate (as percent)	3.30%
Long-term debt	$ 0	500
4.20% Fixed-rate medium term notes, due 2035 | Medium-Term Notes
Debt Instrument [Line Items]
Interest rate (as percent)	4.20%
Long-term debt	$ 500	500
6.25% Fixed-rate medium term notes, due 2038 | Medium-Term Notes
Debt Instrument [Line Items]
Interest rate (as percent)	6.25%
Long-term debt	$ 325	325
4.45% Fixed-rate medium term notes, due 2045 | Medium-Term Notes
Debt Instrument [Line Items]
Interest rate (as percent)	4.45%
Long-term debt	$ 500	500
3.25% Senior Notes, due 2027 | Senior Notes
Debt Instrument [Line Items]
Interest rate (as percent)	3.25%
Long-term debt	$ 700	700
4.25% Senior Notes, due 2028 | Senior Notes
Debt Instrument [Line Items]
Interest rate (as percent)	4.25%
Long-term debt	$ 1,200	1,200
3.25% Senior Notes, due 2029 | Senior Notes
Debt Instrument [Line Items]
Interest rate (as percent)	3.25%
Long-term debt	$ 1,000	1,000
4.50% Senior Notes, due 2030 | Senior Notes
Debt Instrument [Line Items]
Interest rate (as percent)	4.50%
Long-term debt	$ 1,000	1,000
4.10% Senior Notes, due 2047 | Senior Notes
Debt Instrument [Line Items]
Interest rate (as percent)	4.10%
Long-term debt	$ 600	600
4.00% Senior Notes, due 2049 | Senior Notes
Debt Instrument [Line Items]
Interest rate (as percent)	4.00%
Long-term debt	$ 800	800
Term Loan Facility, due 2026 | Loans Payable | Line of Credit
Debt Instrument [Line Items]
Long-term debt	$ 0	490
1.125% Euro Senior Notes, due 2025 | Senior Notes
Debt Instrument [Line Items]
Interest rate (as percent)	1.125%
Long-term debt	$ 0	750
2.90% Euro Senior Notes, due 2030 | Senior Notes
Debt Instrument [Line Items]
Interest rate (as percent)	2.90%
Long-term debt	$ 821	$ 0