SHAREHOLDERS' EQUITY (Common Shares Issued and Outstanding) (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued, balance at beginning of period (in shares)			176,580
Total shares issued at end of period (in shares)	176,580		176,580
Treasury shares, balance at beginning of period (in shares)			(92,994)
Total treasury shares at end of period (in shares)	(92,633)		(92,633)
Total shares outstanding (in shares)	83,947		83,947		83,586
Common stocks
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued, balance at beginning of period (in shares)	176,580	176,580	176,580	176,580
Shares issued (in shares)	0	0	0	0
Total shares issued at end of period (in shares)	176,580	176,580	176,580	176,580
Treasury shares, balance at beginning of period (in shares)	(92,646)	(93,062)	(92,994)	(93,419)
Shares repurchased (in shares)	(7)	(26)	(164)	(175)
Shares reissued (in shares)	20	64	525	570
Total treasury shares at end of period (in shares)	(92,633)	(93,024)	(92,633)	(93,024)
Total shares outstanding (in shares)	83,947	83,556	83,947	83,556