EARNINGS PER SHARE (Details)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Weighted-average shares outstanding:
Basic (in shares)	173,712,000	176,212,000	177,028,000
Dilutive securities	9,371,000	10,462,000	9,014,000
Diluted	183,083,000	186,674,000	186,042,000
Options outstanding excluded from the calculations as their effect would have been antidilutive (in shares)	300,000	300,000	3,600,000