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Supplemental Data (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2017
Cost Data: |  |  |
Repairs and maintenance costs | $ 120.4 | $ 108.0 | $ 99.1
Noncash investing and financing activities: |  |  |
Noncash purchases of property, plant, equipment and software | 16.1 | 16.5 | 13.7
Cash paid (received) during the year for: |  |  |
Interest payments, net | 27.6 | 29.5 | 27.7
Income tax payments (refunds), net | $ 27.5 | $ 33.7 | $ (33.3)

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