Long-Term Debt - Additional Information (Detail) $ in Millions	3 Months Ended
	Sep. 27, 2017 USD ($)
Line of Credit Facility [Line Items]
Line of Credit Facility, Covenant Compliance	We are currently in compliance with all financial covenants.
$1B Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Net Borrowings on revolving credit facility	$ 33.0
Line of Credit Facility, Maximum Borrowing Capacity	$ 1,000.0
Line of Credit Facility, Interest Rate During Period	2.61%
Debt Instrument, Description of Variable Rate Basis	One month LIBOR
Line of Credit Facility, Remaining Borrowing Capacity	$ 574.8
$890M of the $1B Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Expiration Date	Sep. 12, 2021
$110M of the $1B Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Expiration Date	Mar. 12, 2020
Maximum [Member] | $1B Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate	2.00%
Minimum [Member] | $1B Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.38%
London Interbank Offered Rate (LIBOR) [Member] | $1B Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.23%