Note 10 - Share-based Compensation and Other Benefit Plans (Tables)

12 Months Ended

Jun. 30, 2021

Notes Tables

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	Year Ended June 30,
	2021				2020				2019
Dividend yield			0.24%				0.67%				0.74%
Expected volatility		25%	-	30%		22%	-	24%		20%	-	23%
Risk-free interest rates		0.2%	-	0.7%		1.3%	-	1.9%		2.5%	-	3.0%
Expected lives (years)			4.4				4.0				4.1

Share-based Payment Arrangement, Option, Activity [Table Text Block]

	Number of Shares (in thousands)			Weighted Average Exercise Price		Aggregate Intrinsic Value (millions)		Weighted Average Contractual Life (years)
Outstanding at June 30, 2018		3,452		$	105.17
Granted		917			173.89
Forfeited		(330	)		129.93
Exercised		(383	)		95.29
Outstanding at June 30, 2019		3,656		$	121.16
Granted		752			190.80
Forfeited		(56	)		95.97
Exercised		(743	)		157.45
Outstanding at June 30, 2020		3,609		$	140.28
Granted		763			277.75
Forfeited		(28	)		214.33
Exercised		(627	)		112.53
Outstanding at June 30, 2021		3,717		$	172.63	$	1,031.9		4.1
Exercisable at June 30, 2019:		1,467			98.70
Exercisable at June 30, 2020:		1,564			112.60
Exercisable at June 30, 2021:		1,764			126.44	$	571.3		3.0

Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]

	Number of Shares (in thousands)			Weighted Average Grant Date Fair Value		Weighted Average Remaining Contractual Term (years)
Unvested at June 30, 2018		35		$	117.39
Granted		15			177.93
Vested		(20	)		116.76
Forfeited		-			-
Unvested at June 30, 2019		30		$	147.94
Granted		15			193.48
Vested		(18	)		142.12
Forfeited		-			-
Unvested at June 30, 2020		28		$	177.20
Granted		12			264.73
Vested		(17	)		171.64
Forfeited		-			-
Unvested at June 30, 2021		23		$	226.07		6.07

	Number of Units (in thousands)			Weighted Average Grant Date Fair Value		Weighted Average Remaining Contractual Term (years)
Outstanding at June 30, 2018		148		$	117.95
Granted		56			170.96
Vested		(28	)		110.86
Forfeited		(36	)		143.72
Outstanding at June 30, 2019		139		$	134.17
Granted		31			192.08
Vested		(51	)		111.07
Forfeited		(3	)		155.60
Outstanding at June 30, 2020		116		$	159.25
Granted		31			300.78
Vested		(51	)		130.18
Forfeited		-			-
Outstanding at June 30, 2021		96		$	220.53		5.36