Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares shares in Millions	12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
Statement of Stockholders' Equity [Abstract]
Treasury stock acquired (in shares)	0.6	2.5	0.2
Treasury stock reissued (in shares)	1.0	1.1	1.0
Dividends declared (in dollars per share)	$ 3.52	$ 3.20	$ 2.90