STOCK-BASED COMPENSATION (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Aggregate Intrinsic Value:
Proceeds from stock option exercises			$ 13,858,000	$ 17,366,000
Stock Awards Plans | Restricted stock units
STOCK-BASED COMPENSATION
Award vesting period (in years)			3Y
Compensation expense			227,000	432,000
Aggregate Intrinsic Value:
Unrecognized compensation cost expected to be recognized in future periods	144,000		144,000
Weighted-average period over which compensation cost is expected to be recognized (in years)			1.5
Restricted stock unit activity
Balance at the beginning of the period (in shares)			22,303
Granted (in shares)			5,035
Vested (in shares)			(10,045)
Balance at the end of the period (in shares)	17,293		17,293
Weighted-Average Grant-Date Fair Value
Nonvested at the beginning of the period (in dollars per share)			$ 34.71
Granted (in dollars per share)			$ 49.63
Vested (in dollars per share)			$ 34.44
Nonvested at the end of the period (in dollars per share)	$ 39.21		$ 39.21
Fair value of units vested			346,000	298,000
Intrinsic value of units vested			492,000	330,000
Director Stock Option Plans | Stock options
STOCK-BASED COMPENSATION
Weighted-average fair value of stock options granted (in dollars per share)	$ 12.00	$ 10.07
Assumptions used to estimate fair value of stock options granted
Dividend Yield (as a percent)			1.60%	1.70%
Expected Stock Price Volatility (as a percent)			22.90%	22.60%
Risk-free Interest Rate (as a percent)			2.50%	3.40%
Expected Life of Option (in years)			6.9	6.9
Stock options activity
Outstanding at the beginning of the period (in shares)			219,000
Granted (in shares)			85,500
Exercised (in shares)			(30,500)
Outstanding at the end of the period (in shares)	274,000		274,000
Exercisable at the end of the period (in shares)	129,836		129,836
Weighted Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)			$ 30.40
Granted (in dollars per share)	$ 51.26		$ 51.26
Exercised (in dollars per share)	$ 21.81		$ 21.81
Outstanding at the end of the period (in dollars per share)	$ 37.86		$ 37.86
Exercisable at the end of the period (in dollars per share)	$ 29.18		$ 29.18
Weighted-Average Remaining Contractual Term (Years):
Outstanding at the end of the period (in years)	7.6		7.6
Exercisable at the end of the period (in years)			5.6
Aggregate Intrinsic Value:
Outstanding at the end of the period	3,965,000		3,965,000
Exercisable at the end of the period	3,006,000		3,006,000
Intrinsic Value of Options Exercised			884,000	245,000
Stock options
STOCK-BASED COMPENSATION
Award vesting period (in years)			3Y
Expiration period (in years)			10Y
Compensation expense			9,400,000	8,200,000
Compensation expense, net of tax			6,600,000	5,700,000
Compensation expense, per basic share (in dollars per share)			$ 0.10
Compensation expense, per diluted share (in dollars per share)			$ 0.09
Compensation expense, per basic and diluted share (in dollars per share)				$ 0.08
Income tax benefit related to compensation expense			2,800,000	2,500,000
Weighted-average fair value of stock options granted (in dollars per share)			$ 11.36	$ 9.18
Assumptions used to estimate fair value of stock options granted
Dividend Yield (as a percent)			1.70%	1.80%
Expected Stock Price Volatility (as a percent)			23.30%	22.70%
Risk-free Interest Rate (as a percent)			2.70%	3.70%
Expected Life of Option (in years)			6.9	6.9
Stock options activity
Outstanding at the beginning of the period (in shares)			8,208,736
Granted (in shares)			1,284,150
Exercised (in shares)			(729,093)
Forfeited or expired (in shares)			(12,697)
Outstanding at the end of the period (in shares)	8,751,096		8,751,096
Exercisable at the end of the period (in shares)	6,234,768		6,234,768
Weighted Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)			$ 28.91
Granted (in dollars per share)	$ 48.21		$ 48.21
Exercised (in dollars per share)	$ 19.81		$ 19.81
Forfeited or expired (in dollars per share)			$ 35.17
Outstanding at the end of the period (in dollars per share)	$ 32.49		$ 32.49
Exercisable at the end of the period (in dollars per share)	$ 28.85		$ 28.85
Weighted-Average Remaining Contractual Term (Years):
Outstanding at the end of the period (in years)	6.3		6.3
Exercisable at the end of the period (in years)			5.1
Aggregate Intrinsic Value:
Outstanding at the end of the period	171,387,000		171,387,000
Exercisable at the end of the period	144,128,000		144,128,000
Intrinsic Value of Options Exercised			22,232,000	18,711,000
Fair value of shares vested			11,100,000	11,700,000
Proceeds from stock option exercises			13,859,000
Tax benefit realized for the tax deduction from option exercises			5,900,000
Unrecognized compensation cost expected to be recognized in future periods	11,100,000		11,100,000
Weighted-average period over which compensation cost is expected to be recognized (in years)			1.5
Stock options | Selling, research & development and administrative expenses
STOCK-BASED COMPENSATION
Compensation expense			$ 8,700,000	$ 7,500,000