LEASES - Lease Cost (Details)
$ in Thousands

12 Months Ended

Dec. 31, 2019

USD ($)

Lessee, Lease, Description [Line Items]

Operating lease cost

$ 50,927

Variable lease cost

10,258

Lease cost

61,185

Short-term lease cost

$ 5,300

Schedule of Restricted Cash

The following table provides a reconciliation of cash and cash equivalents and restricted cash reported within the consolidated balance sheet to the total amounts shown in the consolidated statement of cash flows:

	December 31, 2019		December 31, 2018		December 31, 2017		December 31, 2016
	(In thousands)
Cash and cash equivalents	$	3,139,295	$	2,131,632	$	1,630,809	$	1,329,187
Restricted cash included in other current assets	654		1,633		2,873		20,464
Restricted cash included in other assets	409		420		—		10,548
Total cash and cash equivalents and restricted cash as shown on the consolidated statement of cash flows	$	3,140,358	$	2,133,685	$	1,633,682	$	1,360,199

Sublease income

$ 2,100

Cost of sales

Lessee, Lease, Description [Line Items]

Operating lease cost

4,106

Variable lease cost

441

Selling and marketing expense

Lessee, Lease, Description [Line Items]

Operating lease cost

10,641

Variable lease cost

1,573

General and administrative expense

Lessee, Lease, Description [Line Items]

Operating lease cost

34,639

Variable lease cost

7,853

Product development expense

Lessee, Lease, Description [Line Items]

Operating lease cost

1,541

Variable lease cost

$ 391