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Income Taxes - Components Giving Rise to Net Deferred Tax Assets (Liabilities) included in Accompanying Consolidated Balance Sheet (Details) - USD ($)
$ in Millions
Jun. 28, 2020
Jun. 30, 2019
Operating Loss Carryforwards [Line Items]    
Assets $ 1.2 $ 0.9
Liabilities (1.8) (2.0)
U.S. federal income taxes    
Operating Loss Carryforwards [Line Items]    
Assets 0.0 0.0
Liabilities (1.8) 0.0
Foreign income taxes    
Operating Loss Carryforwards [Line Items]    
Assets 1.2 0.9
Liabilities $ 0.0 $ (2.0)