STOCK PLANS (Details) (USD $) In Millions, except Share data, unless otherwise specified		12 Months Ended
	Dec. 31, 2012 item	Dec. 31, 2012 Stock options	Dec. 31, 2012 Stock options Key employees	Dec. 31, 2009 Stock options Key employees	Dec. 31, 2007 2007 Performance-based restricted stock awards Key employees	Dec. 31, 2008 2008 Performance-based restricted stock awards Key employees One-fifth Per Year	Dec. 31, 2012 2008 Performance-based restricted stock awards Key employees Initial performance-based award vesting One-fifth Per Year	Dec. 31, 2012 2008 Performance-based restricted stock awards Key employees Incremental performance-based award vesting One-fifth Per Year	Dec. 31, 2012 2008 Performance-based restricted stock awards Key employees Performance-based award full vesting	Dec. 31, 2012 Time-based and performance-based restricted stock awards	Dec. 31, 2011 Time-based and performance-based restricted stock awards	Dec. 31, 2012 Time-based and performance-based restricted stock awards One-third Per Year	Dec. 31, 2008 Time-based and performance-based restricted stock awards Key employees	Dec. 31, 2012 Time-based restricted stock awards One-third Per Year	Dec. 31, 2011 Time-based restricted stock awards One-third Per Year	Dec. 31, 2010 Time-based restricted stock awards Board of Directors	Dec. 31, 2009 Time-based restricted stock awards Board of Directors	Dec. 31, 2010 Time-based restricted stock awards Key employees	Dec. 31, 2009 Time-based restricted stock awards Key employees	Dec. 31, 2008 Time-based restricted stock awards Key employees One-third Per Year	Dec. 31, 2008 Time-based restricted stock awards Key employees One-fifth Per Year	Dec. 31, 2011 2011 Performance-based restricted stock awards One-third Per Year	Dec. 31, 2011 2011 Performance-based restricted stock awards Initial performance-based award vesting One-third Per Year	Dec. 31, 2011 2011 Performance-based restricted stock awards Incremental performance-based award vesting One-third Per Year	Dec. 31, 2012 Restricted Stock Units	Dec. 31, 2012 Restricted Stock Units Key employees	Dec. 31, 2012 Restricted Stock Units Key employees Third Anniversary	Dec. 31, 2012 Restricted Stock Units Key employees One-sixth Per Year	Dec. 31, 2011 2007 Stock Incentive Plan	May 31, 2007 2007 Stock Incentive Plan	Dec. 31, 2011 2010 Stock Incentive Plan	May 31, 2010 2010 Stock Incentive Plan
Stock Plans
Number of Stock Incentive Plans	2
Shares authorized for issuance																														2,000,000		2,000,000
Shares available for issuance																													25,857		1,632,662
Period over which options vest (in years)		5 years	5 years	4 years								3 years		3 years	3 years	3 years	3 years	3 years	4 years	3 years								6 years
Amount of operating profit for vesting of shares							$ 156.0	$ 15.0	$ 216.0														$ 77.0	$ 92.0
Grants in period (in shares)					360,000	66,000				315,030	762,004	22,530	992,117	315,030	14,004	25,446	40,818	25,000	935,000	26,117	900,000	748,000			110,000	110,000	20,000	90,000
Awards vesting on third anniversary of the grant date (in shares)										292,500
Percent of awards or options that vest each year							20.00%	20.00%				33.00%		33.00%	33.00%	33.00%	33.00%	33.00%		33.00%	20.00%		33.00%	33.00%				17.00%