Long Term Debt (Net of Issuance Costs and Debt Discounts Excluding Line-of-credit Arrangements) (Parenthetical) (Detail)	6 Months Ended
Jul. 13, 2019
2026 Notes
Debt Instrument [Line Items]
Senior notes due year	2026
2022 Notes
Debt Instrument [Line Items]
Senior notes due year	2022

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration