INCOME TAXES - SCHEDULE OF INCOME TAX CONTINGENCIES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns
Balance at beginning of the period	$ 30,386	$ 275,813	$ 379,281
Additions based on tax positions related to the current year	4,227	2,159	2,887
Additions for tax positions of prior years	14,467	1,622	3,189
Reductions for tax positions of prior years	(1,556)	(5,611)	(17,116)
Settlements	0	(5,092)	(78,954)
Expiration of applicable statutes of limitations	(6,716)	(238,505)	(13,474)
Balance at end of the period	40,808	30,386	275,813
Income Tax Contingency
Interest on income taxes accrued	2,500	2,800
Income tax penalties accrued	2,200	2,900
Unrecognized tax benefits including tax interest accrued	43,400	33,200
Tax positions for which the ultimate deductibility is highly certain but timing is uncertain	41,000	30,500
Change in unrecognized tax benefits unrelated to Federal income taxes statute of limitations expiring within twelve months of current reporting period	8,100
Change in unrecognized tax benefits unrelated to Federal income taxes statute of limitations expiring within twelve months of current reporting period, tax provision	7,700
Continuing Operations
Income Tax Contingency
Unrecognized tax benefit (expense) net of related deferred taxes	(100)	58,500	(4,800)
Deferred taxes for interest on unrecognized tax benefits (continuing operations)	100	35,300	2,800
Discontinued Operations
Income Tax Contingency
Unrecognized tax benefit (expense) net of related deferred taxes	100	19,700	(1,400)
Deferred taxes for interest on unrecognized tax benefits (discontinued operations)	$ 100	$ 11,700	$ 800