Cash, Cash Equivalents, and Restricted Cash (Tables)

9 Months Ended

Sep. 30, 2019

Short-Term Investments And Fair Value Measurement [Abstract]

Schedule of Cash and Cash Equivalents and Restricted Cash

The following tables summarize the Company's cash, cash equivalents, and restricted cash as of September 30, 2019 and December 31, 2018:

	As of September 30, 2019
	Cash and cash equivalents		Non-current Assets		Total
	(in thousands)
Cash	$	3,013,907	$	23,383	$	3,037,290
Level 1 securities:
Money market funds	1,421,111		1,320		1,422,431
	$	4,435,018	$	24,703	$	4,459,721

	As of December 31, 2018
	Cash and cash equivalents		Non-current Assets		Total
	(in thousands)
Cash	$	2,572,685	$	16,260	$	2,588,945
Level 1 securities:
Money market funds	1,221,798		1,298		1,223,096
	$	3,794,483	$	17,558	$	3,812,041