Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2025	Jun. 30, 2024
Common stock, stated value (in dollars per share)	$ 1	$ 1
Common stock, authorized (in shares)	10,000,000,000	10,000,000,000
Common stock, issued (in shares)	4,009,200,000	4,009,200,000
Treasury stock (in shares)	1,667,300,000	1,652,200,000
Preferred Class A
Preferred stock, stated value (in dollars per share)	$ 1	$ 1
Preferred stock, authorized (in shares)	600,000,000	600,000,000
Preferred Class B
Preferred stock, stated value (in dollars per share)	$ 1	$ 1
Preferred stock, authorized (in shares)	200,000,000	200,000,000