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UNIT-BASED COMPENSATION Table 1 (Details)	12 Months Ended
UNIT-BASED COMPENSATION Table 1 (Details)	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
The 2000 LTIP [Member] \| Performance Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting		Performance awards vest 1/3 per year if certain performance measures are met, as defined in the award agreements.	Performance awards vest 1/3 per year if certain performance measures are met, as defined in the award agreements.
The 2000 LTIP [Member] \| Performance units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted units, granted	33,445	27,111	21,380
Vesting	Performance awards vest 1/3 per year if certain performance measures are met, as defined in the award agreements.
The 2000 LTIP [Member] \| Restricted units, employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted units, granted	231,855	208,195	191,430
Vesting	1/5 per year	1/5 per year	1/5 per year
The 2000 LTIP [Member] \| Restricted units, non-employee directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted units, granted	8,170	6,760	3,938
Vesting	1/3 per year	1/3 per year	1/3 per year
The UIP [Member] \| Restricted units, employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted units, granted	15,382	14,005	11,520
Vesting	1/5 per year	1/5 per year	1/5 per year
The UIP [Member] \| Restricted units, certain international employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted units, granted	3,392	2,880	2,460
Vesting	1/3 per year	1/3 per year	1/3 per year
The 2006 LTIP [Member] \| Restricted units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted units, granted	36,241
The 2006 LTIP [Member] \| Restricted units, employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted units, granted	25,640	24,970	21,935
Vesting	1/5 per year	1/5 per year	1/5 per year
The 2006 LTIP [Member] \| Restricted units, non-employee directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted units, granted	10,601	9,987	6,156
Vesting	1/3 per year	1/3 per year	1/3 per year

Description of award terms as to how many shares or portion of an award are no longer contingent on satisfaction of either a service condition, market condition or a performance condition, thereby giving the employee the legal right to convert the award to shares, to sell the shares, and be entitled to the cash proceeds of such sale. For example, vesting may be expressed as being 25 percent of the shares under option on each anniversary of the grant date.

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