Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 29, 2018	Dec. 30, 2017	Dec. 29, 2018	Dec. 30, 2017
Income Tax Disclosure [Abstract]
Effective income tax rate	24.59%	37.11%	21.75%	34.71%
Effective income tax expense (benefit) attributable to the pension plan	$ (7.6)
Effective income tax expense (benefit) attributable to provisions of the Tax Act	11.9
Excess tax benefits of equity-based compensation and tax law changes in foreign jurisdictions		$ 14.8
Impact of changes in tax law in foreign jurisdictions		$ 8.1
Tax act, transition taxes	15.1
Tax act, deferred tax assets	3.2
Unrecognized tax benefits	6.6		$ 6.6
Liability recorded for interest and penalties related to unrecognized tax benefits	$ 4.4		$ 4.4