CAPITAL STOCK AND STOCK AWARD PLANS - Share Repurchase Programs Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Total Value of Shares Repurchased	$ 179,985	$ 176,676	$ 232,113
2013 Program
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Shares Repurchased (in shares)	2,426,407	2,467,097	3,420,681	3,763,583	930,075
Total Value of Shares Repurchased	$ 179,985	$ 176,676	$ 232,113	$ 239,037	$ 57,689