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Note 10 - Share-based Compensation and Other Benefit Plans (Tables) | 12 Months Ended
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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 |

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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