SHARE-BASED PAYMENTS - Stock option activity (Details) $ / shares in Units, $ in Millions	3 Months Ended	4 Months Ended	9 Months Ended
	Feb. 26, 2017 USD ($) $ / shares shares	Feb. 26, 2017 USD ($) item $ / shares shares	Feb. 26, 2017 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of threshold days | item		5
Weighted average Black-Scholes assumptions:
Expected volatility (%)	23.94%
Dividend yield (%)	2.18%
Risk-free interest rate (%)	1.57%
Expected life of stock option (years)	3 years 4 months 24 days
Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized under our equity incentive plans (in shares)	10,000,000	10,000,000	10,000,000
Available for future grant (in shares)	8,200,000	8,200,000	8,200,000
Stock options
Shares
Converted (in shares)			607,420
Granted (in shares)			146,514
Exercised (in shares)			15,819
Forfeited/cancelled (in shares)			10,211
Outstanding at end of the period (in shares)	727,904	727,904	727,904
Exercisable at end of year (in shares)	317,324	317,324	317,324
Weighted - Average Exercise Price (Per share)
Converted (in dollars per share) | $ / shares			$ 23.60
Granted (in dollars per share) | $ / shares			35.15
Exercised (in dollars per share) | $ / shares			21.87
Forfeited/cancelled (in dollars per share) | $ / shares			30.68
Outstanding at end of the period (in dollars per share) | $ / shares	$ 25.86	$ 25.86	25.86
Exercisable at end of year (in dollars per share) | $ / shares	$ 20.45	$ 20.45	$ 20.45
Weighted- Average Remaining Contractual Term (Years)
Outstanding (in years)			7 years 7 months 6 days
Exercisable (in years)			5 years 9 months
Exercisable aggregate intrinsic value | $	$ 10.0	$ 10.0	$ 10.0
Outstanding aggregate intrinsic value | $	$ 6.1	$ 6.1	$ 6.1