Income Taxes Effective Tax Rate (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Jan. 01, 2017	Dec. 31, 2017	Jan. 01, 2017
Income Tax Contingency [Line Items]
U.S. federal statutory corporate income tax rate as a result of the Tax Act, current fiscal year			28.00%
U.S. federal statutory corporate income tax rate as a result of the Tax Act, percent, future years			21.00%
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions				$ 3.9
Effective Income Tax Rate	234.19%	26.10%	(252.82%)	(307.60%)
Deferred Tax Assets, Valuation Allowance		$ 2.7		$ 2.7