Recent Accounting Pronouncements - Additional Information (Detail) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
Jul. 15, 2017	Dec. 31, 2016
Accounting Changes And Error Corrections [Abstract]
Net impact of income tax expense for exercised and vested awards	$ 1.6
Operating leases, expense		$ 97.4

Amount of cash inflow from realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 20
-Section 55
-Paragraph 24
-URI http://asc.fasb.org/extlink&oid=96864182&loc=d3e11374-113907

Name:	us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration