LEASES Supplemental balance sheet information (Details) - USD ($) $ in Thousands		Dec. 31, 2020		Dec. 31, 2019	Jan. 01, 2019
Lessee, Lease, Description [Line Items]
Operating Lease, Right-of-Use Asset		$ 534,705	[1]	$ 235,834	$ 240,000
Operating Lease, Liability, Noncurrent		414,889	[1]	179,830
Operating Lease, Liability		543,211	[1]	241,876	$ 245,000
Disposal Group, Operating Lease Assets		1,938
Disposal Group, Including Discontinued Operation, ST and LT Operating Lease Liabilities				2,100
Other Current Liabilities
Lessee, Lease, Description [Line Items]
Operating Lease, Liability, Current	[2]	$ 128,322	[1]	$ 62,046

[1] Operating lease assets and liabilities of $1.9 million and $2.1 million, respectively, are classified as held for sale as of December 31, 2020, as disclosed in Note 7, "Assets and Liabilities Held for Sale".

[2] Current operating lease liabilities are recorded as a component of other current liabilities in the Consolidated Balance Sheets.