Leases Supplemental Balance Sheet Information (Details) - USD ($) $ in Millions	Jun. 30, 2021	Jun. 30, 2020
Leases [Abstract]
Total operating lease liabilities	$ 479	$ 445
Total finance lease liabilities	64	34
Finance Lease, Liability, Current	19	9
Finance Lease, Liability, Noncurrent	$ 45	$ 25
Operating Lease, Weighted Average Remaining Lease Term	6 years 6 months	6 years 4 months 24 days
Finance Lease, Weighted Average Remaining Lease Term	4 years 2 months 12 days	4 years 3 months 18 days
Operating Lease, Weighted Average Discount Rate, Percent	2.90%	2.90%
Finance Lease, Weighted Average Discount Rate, Percent	1.50%	2.40%
Total lease liabilities	$ 479	$ 445
Finance Lease, Liability, Current	19	9
Other Assets [Member]
Leases [Abstract]
Operating Lease, Right-of-Use Asset	460	426
Operating Lease, Right-of-Use Asset	460	426
Other Liabilities
Leases [Abstract]
Operating Lease, Liability, Noncurrent	374	341
Operating Lease, Liability, Noncurrent	374	341
Other Accrued Liabilities
Leases [Abstract]
Operating Lease, Liability, Current	105	104
Operating Lease, Liability, Current	105	104
Property, Plant and Equipment
Leases [Abstract]
Finance Lease, Right-of-Use Asset, after Accumulated Amortization	63	33
Finance Lease, Right-of-Use Asset, after Accumulated Amortization	$ 63	$ 33