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Reconciliation of Numerator and Denominator of Basic and Diluted Earnings Per Share (Parenthetical) (Detail) - shares
3 Months Ended 6 Months Ended
Nov. 27, 2018
Nov. 30, 2018
Nov. 30, 2017
Nov. 30, 2018
Nov. 30, 2017
Restricted shares          
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]          
Shares excluded from the calculation of diluted earnings per share   0 123,262,000 0 99,612,000
Stock appreciation rights (SARs)          
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]          
Shares excluded from the calculation of diluted earnings per share   480,000,000 600,000,000 890,000,000 600,000,000
2.25% Convertible Senior Notes          
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]          
Debt instrument redemption date Nov. 27, 2018        
Debt, interest rate 2.25% 2.25%   2.25%  
Debt instrument maturity year 2020        
Debt conversion, common stock shares issued 598,601