EQUITY-BASED INCENTIVE AWARDS (Details) $ / shares in Units, $ in Millions	3 Months Ended
	Dec. 31, 2015 USD ($) item $ / shares shares
EQUITY-BASED INCENTIVE AWARDS
Number of incentive plans | item	2
Number of shares of the company's common stock permitted for issuance under the plan	225,000
Number of shares awarded pursuant to the plan	179,255
Number of shares that may be awarded under the plan	45,745
Stock Options
Omnibus plan and stock option activity
Expiration period	10 years
Vesting period	5 years
Stock options issued and outstanding
Number Outstanding (in shares)	26,600
Weighted-Average Exercise Price (in dollars per share) | $ / shares	$ 68.24
Number Exercisable (in shares)	11,700
Exercisable, Weighted-Average Exercise Price (in dollars per share) | $ / shares	$ 56.70
Estimated fair value of the stock option awards using the Black-Scholes option pricing model | $	$ 0.1
Stock Option Pricing Assumptions
Risk-free interest rate (as a percent)	1.98%
Dividend yield (as a percent)	0.90%
Expected volatility (as a percent)	24.30%
Expected life	6 years
Number of Shares
Granted (in shares)	5,500
Stock Options | Minimum
Omnibus plan and stock option activity
Vesting period	3 years
Stock Options | Maximum
Omnibus plan and stock option activity
Vesting period	5 years
Stock Options | Fiscal 2010
Stock options issued and outstanding
Number Outstanding (in shares)	3,500
Remaining Weighted-Average Contractual Life	4 years 3 months 29 days
Weighted-Average Exercise Price (in dollars per share) | $ / shares	$ 51.50
Number Exercisable (in shares)	3,500
Exercisable, Weighted-Average Exercise Price (in dollars per share) | $ / shares	$ 51.50
Stock Options | Fiscal 2012
Stock options issued and outstanding
Number Outstanding (in shares)	4,900
Remaining Weighted-Average Contractual Life	5 years 9 months 26 days
Weighted-Average Exercise Price (in dollars per share) | $ / shares	$ 55.04
Number Exercisable (in shares)	3,700
Exercisable, Weighted-Average Exercise Price (in dollars per share) | $ / shares	$ 54.79
Stock Options | Fiscal 2012 | Minimum
Stock options issued and outstanding
Weighted-Average Exercise Price (in dollars per share) | $ / shares	53.80
Stock Options | Fiscal 2012 | Maximum
Stock options issued and outstanding
Weighted-Average Exercise Price (in dollars per share) | $ / shares	$ 65.97
Stock Options | Fiscal 2013
Stock options issued and outstanding
Number Outstanding (in shares)	6,700
Remaining Weighted-Average Contractual Life	6 years 9 months 26 days
Weighted-Average Exercise Price (in dollars per share) | $ / shares	$ 62.33
Number Exercisable (in shares)	4,500
Exercisable, Weighted-Average Exercise Price (in dollars per share) | $ / shares	$ 62.33
Stock Options | Fiscal 2015
Stock options issued and outstanding
Number Outstanding (in shares)	6,000
Remaining Weighted-Average Contractual Life	9 years 29 days
Weighted-Average Exercise Price (in dollars per share) | $ / shares	$ 81.03
Stock Options | Fiscal 2016
Stock options issued and outstanding
Number Outstanding (in shares)	5,500
Remaining Weighted-Average Contractual Life	9 years 9 months 22 days
Weighted-Average Exercise Price (in dollars per share) | $ / shares	$ 83.90