Share-Based Compensation Performance stock units activity (Details) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Jun. 30, 2018 USD ($) $ / shares shares
Weighted average grant date fair value [Roll Forward]
Threshold consecutive trading days	15 days
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Non-vested, start of year (in shares) | shares	0
Granted (in shares) | shares	538
Vested/Exercised (in shares) | shares	0
Non-vested, end of year (in shares) | shares	538
Weighted average grant date fair value [Roll Forward]
Nonvested, weighted average grant date fair value, start of year (in USD per share) | $ / shares	$ 0.00
Grants in period, weighted average grant date fair value (in USD per share) | $ / shares	7.29
Vested/exercised, weighted average grant date fair value (in USD per share) | $ / shares	0.00
Nonvested, weighted average grant date fair value, end of year (in USD per share) | $ / shares	$ 7.29
Award requisite service period	4 years
Nonvested, compensation not yet recognized, PSU | $	$ 3.5
Nonvested, compensation not yet recognized, period	3 years 7 months