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Share-Based Compensation - Employee Compensation Plans (Details)
shares in Millions, $ in Millions
9 Months Ended
Jan. 23, 2019
shares
Mar. 31, 2019
USD ($)
ShareBasedCompensationPlan
shares
Stock-based Compensation    
Number of share-based employee compensation plans | ShareBasedCompensationPlan   2
Aggregate number of shares authorized for issuance   4.5
Increase in aggregate number of shares authorized for issuance 2.0  
Shares for future issuances   2.7
Maximum    
Other disclosures    
Share-based compensation awards vesting period   3 years
Share-based compensation awards maximum contractual term   10 years
Restricted stock    
Other disclosures    
Total unrecognized compensation cost related to non-vested share-based compensation awards granted under the Plans | $   $ 12.4
Weighted average period during which the cost is expected to be recognized   2 years