Leases - Schedule of Supplemental Balance Sheet Information (Details) - USD ($) $ in Millions	Jun. 30, 2025	Jun. 30, 2024
Operating Leases
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Operating lease right-of-use assets (included within Other assets)	$ 192	$ 226
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other accrued liabilities	Other accrued liabilities
Current operating lease liabilities (included within Other accrued liabilities)	$ 47	$ 54
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other liabilities	Other liabilities
Long-term operating lease liabilities (included within Other liabilities)	$ 154	$ 180
Total operating lease liabilities	201	234
Finance Leases
Property, plant and equipment	127	116
Accumulated depreciation	$ (25)	$ (15)
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Property, Plant and Equipment, Net	Property, Plant and Equipment, Net
Property, plant and equipment, net	$ 102	$ 101
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other accrued liabilities	Other accrued liabilities
Notes payable and long-term debt payable within one year	$ 6	$ 5
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Long-term debt	Long-term debt
Long-term debt	$ 102	$ 98
Total finance lease liabilities	$ 108	$ 103
Weighted-average remaining lease term
Operating leases	6 years 3 months 18 days	6 years 4 months 24 days
Finance leases	18 years 9 months 18 days	19 years 6 months
Weighted-average discount rate
Operating leases	4.30%	4.20%
Finance leases	5.20%	5.20%