Business Combinations - Additional Information (Detail) $ in Millions	2 Months Ended	12 Months Ended
	Aug. 24, 2018 USD ($) Business-Combination	Jun. 30, 2018 USD ($) Business-Combination	Jul. 01, 2017 USD ($) Business-Combination		Jul. 02, 2016 USD ($) Business-Combination
Business Acquisition [Line Items]
Payment for acquisition		$ 71.1	$ 192.9	[1]	$ 39.0	[1]
Number of acquisitions | Business-Combination		2	7		2
Subsequent Event [Member]
Business Acquisition [Line Items]
Number of acquisitions | Business-Combination	1
Business Acquisition Cost [Member]
Business Acquisition [Line Items]
Payment for acquisition		$ 72.7	$ 193.6		$ 39.0
Business Acquisition Cost [Member] | Subsequent Event [Member]
Business Acquisition [Line Items]
Payment for acquisition	$ 31.5

[1] The consolidated statements of cash flows for the fiscal years ended July 1, 2017 and July 2, 2016 have been adjusted to reflect the adoption of ASU 2016-08, Statement of Cash Flows (Topic 230): Restricted Cash. The consolidated statements of cash flows explain the change during the periods in the total of cash and restricted cash. Therefore, restricted cash activity is included with cash when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. Cash payments of $7.3 million in fiscal 2016 related to insurance claims paid using restricted cash is classified as a change in Accrued expenses and other liabilities within Net cash provided by operating activities. Refer to Note 3 for further discussion.