| Income Taxes  - Additional Information (Details) $ in Millions | 3 Months Ended | 
|---|---|
| Sep. 30, 2018  USD ($) | |
| Income Tax Disclosure [Abstract] | |
| Provisional tax amount included as a component of income tax expense from continuing operations | $ 19.8 | 
| Amount of unrecorded benefit | $ 10.0 | 
| X | ||||||||||
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- Definition Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Provisional Income Tax Expense (Benefit) No definition available. 
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| X | ||||||||||
| 
- References No definition available. 
 | 
| X | ||||||||||
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- Definition The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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