Earnings Per Share - Reconciliation of Numerators and Denominators used in Computing Earnings Per Share - Narrative (Detail) - shares shares in Millions	3 Months Ended	6 Months Ended
Aug. 26, 2017	Aug. 27, 2016	Aug. 26, 2017	Aug. 27, 2016
Earnings Per Share [Abstract]
Antidilutive shares excluded from computation of diluted earnings per share	3.4	3.1	3.4	3.0

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Name:	us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration