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CAPITAL STOCK AND STOCK AWARD PLANS - Share Repurchase Programs Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	May 31, 2018	Dec. 31, 2013
Share Repurchases [Line Items]
Total Value of Shares Repurchased	$ 182,745	$ 306,444	$ 303,492
Share Repurchase Programs
Share Repurchases [Line Items]
Shares Repurchased (in shares)	2,542,915	3,434,102	3,319,077
Total Value of Shares Repurchased	$ 182,745	$ 306,444	$ 303,492
2013 Repurchase Program
Share Repurchases [Line Items]
Number of shares authorized to be repurchased (in shares)					15,000,000
2018 Repurchase Program
Share Repurchases [Line Items]
Number of shares authorized to be repurchased (in shares)				15,000,000
Shares remaining for repurchase under authorization (in shares)	7,789,752

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