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

12 Months Ended

Jun. 30, 2020

Notes Tables

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

	Year Ended June 30,
	2020			2019			2018
Dividend yield		0.67%			0.74%			1.1%
Expected volatility	22%	-	24%	20%	-	23%	21%	-	24%
Risk-free interest rates	1.3%	-	1.9%	2.5%	-	3.0%	1.7%	-	2.8%
Expected lives (years)		4.0			4.1			4.7

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, 2017		2,821		$	98.42
Granted		1,087			120.67
Forfeited		(252	)		86.62
Exercised		(204	)		111.51
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	$	446.7		4.3
Exercisable at June 30, 2018:		1,151			90.75
Exercisable at June 30, 2019:		1,467			98.70
Exercisable at June 30, 2020:		1,564			112.60	$	236.8		3.3

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, 2017		32		$	105.80
Granted		20			125.05
Vested		(17	)		104.66
Forfeited		-			-
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		6.14

	Number of Units (in thousands)			Weighted Average Grant Date Fair Value		Weighted Average Remaining Contractual Term (years)
Outstanding at June 30, 2017		111		$	106.39
Granted		71			129.99
Vested		(16	)		95.46
Forfeited		(18	)		115.01
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	)		155.6
Outstanding at June 30, 2020		116		$	159.25		5.20