FAIR VALUE MEASUREMENTS (Details) (USD $)	Jun. 30, 2011	Dec. 31, 2010
Trading securities	$ 47,830,000	$ 38,740,000
Cash surrender value of life insurance policies	21,968,000	20,314,000
Available-for-sale equity securities	2,451,000	5,066,000
Total Assets	92,282,000	79,130,000
Deferred compensation liabilities	73,124,000	61,964,000
Total Liabilities	73,234,000	62,428,000
Fair value of debt	4,600,000,000	3,100,000,000
Amount exceeding or below of carrying value of debt	228,000,000	80,000,000
Interest rate swaps [Member]
Derivative instruments, assets	18,939,000	10,483,000
Interest rate swaps [Member] | Fair Value, Inputs, Level 2 [Member]
Derivative instruments, assets	18,939,000	10,483,000
Foreign currency forward contracts [Member]
Derivative instruments, assets	1,094,000	4,527,000
Derivative instruments, liabilities	110,000	464,000
Foreign currency forward contracts [Member] | Fair Value, Inputs, Level 2 [Member]
Derivative instruments, assets	1,094,000	4,527,000
Derivative instruments, liabilities	110,000	464,000
Fair Value, Inputs, Level 1 [Member]
Trading securities	47,830,000	38,740,000
Total Assets	47,830,000	38,740,000
Fair Value, Inputs, Level 2 [Member]
Cash surrender value of life insurance policies	21,968,000	20,314,000
Total Assets	42,001,000	35,324,000
Deferred compensation liabilities	73,124,000	61,964,000
Total Liabilities	73,234,000	62,428,000
Fair Value, Inputs, Level 3 [Member]
Available-for-sale equity securities	2,451,000	5,066,000
Total Assets	$ 2,451,000	$ 5,066,000