STOCK-BASED COMPENSATION (Narrative) (Details)	12 Months Ended	3 Months Ended	9 Months Ended	12 Months Ended			12 Months Ended		3 Months Ended										12 Months Ended					3 Months Ended	9 Months Ended	12 Months Ended			12 Months Ended		3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2013 Stock Options	Dec. 31, 2011 Phantom Stock Units	Sep. 30, 2011 Phantom Stock Units	Dec. 31, 2013 Phantom Stock Units	Dec. 31, 2012 Phantom Stock Units	Dec. 31, 2010 Phantom Stock Units	Dec. 31, 2013 Phantom Stock Units Vesting Schedule One-Third On Each Of the First Three Anniversary Dates of the Grant	Dec. 31, 2013 Phantom Stock Units Cliff Vest On Third Anniversary of Award Date	Dec. 31, 2013 Phantom Stock Units Vest Over Four Year Period - 10% Year One, 20% Year Two, 30% Year Three, 40% Year Four	Dec. 31, 2013 Phantom Stock Units First Anniversary of the Grant Date	Dec. 31, 2013 Phantom Stock Units Second Anniversary of the Grant Date	Dec. 31, 2013 Phantom Stock Units Third Anniversary of the Grant Date	Dec. 31, 2013 Phantom Stock Units Fourth Anniversary Of the Grant Date	Dec. 31, 2013 Phantom Stock Units Granted in 2011 Vesting Schedule One-Third On Each Of the First Three Anniversary Dates of the Grant	Dec. 31, 2013 Phantom Stock Units Granted in 2012 Vest Over Four Year Period - 10% Year One, 20% Year Two, 30% Year Three, 40% Year Four	Dec. 31, 2013 Phantom Stock Units Granted in 2013 Vesting Schedule One-Third On Each Of the First Three Anniversary Dates of the Grant	Dec. 31, 2013 Phantom Stock Units Granted in 2013 Cliff Vest On Third Anniversary of Award Date	Dec. 31, 2013 Phantom Stock Units Granted in 2013 Vest Over Four Year Period - 10% Year One, 20% Year Two, 30% Year Three, 40% Year Four	Dec. 31, 2012 Phantom Stock Units Share Settled	Dec. 31, 2011 Phantom Stock Units Share Settled	Dec. 31, 2013 Phantom Stock Units Cash Settled	Dec. 31, 2012 Phantom Stock Units Cash Settled	Dec. 31, 2011 Phantom Stock Units Cash Settled	Dec. 31, 2011 Restricted Stock	Sep. 30, 2011 Restricted Stock	Dec. 31, 2013 Restricted Stock	Dec. 31, 2012 Restricted Stock	Dec. 31, 2010 Restricted Stock	Dec. 31, 2013 Restricted Stock Cliff Vest On Third Anniversary of Award Date	Dec. 31, 2013 Restricted Stock Granted in 2013 Vesting Schedule One-Third On Each Of the First Three Anniversary Dates of the Grant	Dec. 31, 2011 Performance Units	Sep. 30, 2011 Performance Units	Dec. 31, 2013 Performance Units	Dec. 31, 2012 Performance Units	Dec. 31, 2010 Performance Units	Dec. 31, 2013 Performance Units Share Settled	Dec. 31, 2013 Performance Units Cash Settled	Dec. 31, 2013 2007 Plan	Dec. 31, 2007 2007 Plan	Dec. 31, 2013 2001 Plan	Dec. 31, 2001 2001 Plan
Stock-based compensation
Number of shares authorized (in shares)																																							9,500,000		5,000,000
Number of shares available for grant (in shares)																																						4,000,000		0
Stock options are granted at the fair market value of this many shares of common stock at date of grant (in shares)	1
Stock option, term (in years)	10 years
Vesting rate per year (as a percent)	25.00%						33.00%			10.00%	20.00%	30.00%	40.00%																	33.00%
Award vesting period (in years)	4 years						3 years	3 years	4 years																				3 years	3 years
Awarded (in shares)		941,300	500	1,808,701	718,500																			25,700	1,025,782	2,163,877	1,743,757			851,526	0	226,000	1,182,500	789,500
Number of shares of common stock to be received (or the cash value of this number of shares) for each performance unit (in shares)																																	1
Actual number of shares deliverable for each performance unit awarded, low end of range (as a percent)																																	0.00%
Actual number of shares deliverable for each performance unit awarded, high end of range (as a percent)																																	200.00%
Unvested (in shares)		1,238,817	315,024	1,924,819	1,161,737	510,609								152,393	378,000	851,426	493,000	50,000						2,474,112	2,556,092	2,790,542	2,721,637	2,272,321			655,120	664,240	1,511,140	939,180	264,500	805,140	706,000
Vested (in shares)		3,505	52,587	577,201	608,543														6,080	5,500	577,201	602,463	393,357	48,560	610,681	1,286,322	956,547				0	0	203,240	323,760
Performance period (in months)																																	36 months